Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 20 de 97
Filter
1.
Neurol Res Pract ; 6(1): 7, 2024 Feb 08.
Article in English | MEDLINE | ID: mdl-38326907

ABSTRACT

BACKGROUND: Acquired brain injuries are among the most common causes of disability in adulthood. An intensive rehabilitation phase is crucial for recovery. However, there is a lack of concepts to further expand the therapeutic success after the standard rehabilitation period. Hereafter, the characteristics of a transsectoral, multiprofessional long-term neurorehabilitation concept and its effects on outcome at different ICF levels are described. METHODS: The P.A.N. Center for Post-Acute Neurorehabilitation combines living with 24/7 support of pedagogical staff with on-site outpatient therapy and medical care. A secondary data analysis was conducted on the records of all patients with completeted P.A.N. treatment between 01.01.2015 and 09.04.2022. Outcome parameters included demographic characteristics, diagnostics, Barthel Index (BI), the German scale "Hilfebedarf von Menschen mit Behinderung für den Lebensbereich Wohnen " (HMBW), the Canadian Occupational Performance Measure (COPM) and the destination after discharge. For BI and discharge destination, potential determinants of therapy success are evaluated. RESULTS: 168 patients were enrolled in the analyses. Significant improvements were observed in the BI (p < .001), with median values increasing from 55 to 80 points. The HMBW showed a significant decrease in the need for assistance in everyday living (p < .001), individual basic care (p < .001), shaping social relationship (p = .003) and communication (p < .001). Significant improvements were reported in the COPM total score for performance (p < .001) and satisfaction (p < .001). 72% of the patients were able to move in a community living arrangement with moderate need for support. Main predictive factor for discharge destination was the initial cognitive deficit. The comparison of the third-person scales BI and HMBW with the self-reported COPM showed that individually formulated patient goals are only insufficiently reflected in these global scales. DISCUSSION: The data show that a highly coordinated, trans-sectoral 24/7 approach of goal-oriented practice as pursued at P.A.N. is feasible and effective. We assume that the success of the intervention is due to the high intensity of therapies delivered over a long time and its interlink with real world practice. For a comprehensive analysis of rehabilitation success, it is necessary to record and evaluate individual patient goals, as these are not always reflected in the commonly used global scales.

2.
Restor Neurol Neurosci ; 40(3): 185-194, 2022.
Article in English | MEDLINE | ID: mdl-35848045

ABSTRACT

BACKGROUND: Standard mirror therapy (MT) is a well-established therapy regime for severe arm paresis after acquired brain injury. Bilateral robot-assisted mirror therapy (RMT) could be a solution to provide visual and somatosensory feedback simultaneously. OBJECTIVE: The study compares the treatment effects of MT with a version of robot-assisted MT where the affected arm movement was delivered through a robotic glove (RMT). METHODS: This is a parallel, randomized trial, including patients with severe arm paresis after stroke or traumatic brain injury with a Fugl-Meyer subscore hand/finger < 4. Participants received either RMT or MT in individual 30 minute sessions (15 sessions within 5 weeks). Main outcome parameter was the improvement in the Fugl-Meyer Assessment upper extremity (FMA-UE) motor score. Additionally, the Motricity Index (MI) and the FMA-UE sensation test as well as a pain scale were recorded. Furthermore, patients' and therapists' experiences with RMT were captured through qualitative tools. RESULTS: 24 patients completed the study. Comparison of the FMA-UE motor score difference values between the two groups revealed a significantly greater therapy effect in the RMT group than the MT group (p = 0.006). There were no significant differences for the MI (p = 0.108), the FMA-UE surface sensibility subscore (p = 0.403) as well as the FMA-UE position sense subscore (p = 0.192). In both groups the levels of pain remained stable throughout the intervention. No other adverse effects were observed. The RMT training was well accepted by patients and therapists. CONCLUSIONS: The study provides evidence that bilateral RMT achieves greater treatment benefit on motor function than conventional MT. The use of robotics seems to be a good method to implement passive co-movement in clinical practice. Our study further demonstrates that this form of training can feasibly and effectively be delivered in an inpatient setting.


Subject(s)
Robotics , Stroke Rehabilitation , Stroke , Humans , Mirror Movement Therapy , Pain , Paresis/etiology , Recovery of Function , Stroke/complications , Stroke/therapy , Treatment Outcome , Upper Extremity
3.
Front Neurol ; 12: 720282, 2021.
Article in English | MEDLINE | ID: mdl-34887825

ABSTRACT

Introduction: Due to functional and autonomic difficulties faced by individuals with Duchenne Muscular Dystrophy (DMD), the use of assistive technology is critical to provide or facilitate functional abilities. The key objective was to investigate acute cardiac autonomic responses, by application of Heart Rate Variability (HRV), during computer tasks in subjects with DMD via techniques based on non-linear dynamics. Method: HRV was attained via a Polar RS800CX. Then, was evaluated by Chaotic Global Techniques (CGT). Forty-five male subjects were included in the DMD group and age-matched with 45 in the healthy Typical Development (TD) control group. They were assessed for 20 min at rest sitting, and then 5 min whilst performing the maze task on a computer. Results: Both TD and DMD subjects exhibited a significantly reduced HRV measured by chaotic global combinations when undertaking the computer maze paradigm tests. DMD subjects presented decreased HRV during rest and computer task than TD subjects. Conclusion: While there is an impaired HRV in subjects with DMD, there remains an adaptation of the ANS during the computer tasks. The identification of autonomic impairment is critical, considering that the computer tasks in the DMD community may elevate their level of social inclusion, participation and independence.

4.
J Exp Psychol Hum Percept Perform ; 47(12): 1698-1716, 2021 Dec.
Article in English | MEDLINE | ID: mdl-34881954

ABSTRACT

The functional equivalence (FE) hypothesis suggests motor imagery (MI) is comparable with the planning stages of action. A strong interpretation of this hypothesis suggests MI can prime subsequent actions in a way that should be indistinguishable from motor preparation (MP). Alternatively, MI could involve more richly informative motor plans than MP, producing different effects on the performance of subsequent actions. Although past research has demonstrated MI can prime action, little research has directly compared it with MP, and so the value of a strong FE interpretation for understanding MI remains unclear. In the present study, a precueing paradigm was used in 4 experiments, and congruency effects of MI and MP on subsequent action were compared. Precues instructed participants to prepare for (MP condition) or imagine (MI condition) a corresponding response prior to making a real response to the imperative stimulus, which was either congruent or incongruent with the precue information. Experiment 1 provided first evidence favoring our alternative hypothesis that imagery-primed responses should result in larger response priming effects than prepared-responses, suggesting that MI might involve more richly informative motor plans than preparation for action alone. In experiment 2, we manipulated interstimulus foreperiods and replicated the MI-priming effect, showing it to be independent of differences in temporal uncertainty between MI and MP. Experiment 3 showed the MI-priming effect is present in both foot and finger responses, and Experiment 4 suggested the larger congruency effects in the MI condition could not be explained by differences in cognitive load between MI and MP. These results suggest that a strong FE hypothesis does not hold. Findings are discussed in line with the predictive processing models of action and MI. (PsycInfo Database Record (c) 2021 APA, all rights reserved).


Subject(s)
Imagination , Movement , Cost-Benefit Analysis , Humans , Motor Activity
5.
Front Psychol ; 12: 693920, 2021.
Article in English | MEDLINE | ID: mdl-34220655

ABSTRACT

About 85% of survivors of acute Wernicke's Encephalopathy (WE), a frequent and serious consequence of thiamine deficiency and alcohol misuse, sustain chronic neurocognitive deficits also known as chronic Wernicke-Korsakoff syndrome (WKS). If alcoholism is combined with smoking, tobacco alcohol optic neuropathy (TAON) may occur which leads to visual impairment. In contrast to WKS, TAON may be treated successfully by early vitamin substitution and detoxification. Little research has been conducted on WKS longterm outcomes. Existing literature suggests poor prognosis. Symptoms remaining beyond the acute treatment with thiamine are thought to be irreversible. Whether neurorehabilitation may be an effective route to help recovery of those persistent symptoms is an open question. At our neurorehabilitation center, which specializes in the treatment of severe chronic deficits after brain injury, the opportunity arose to treat a 35 year old male with WKS, and to conduct follow-up assessments 3- and 7-years post discharge, respectively. Initially MK was admitted to emergency care with suspected postconcussive syndrome, alcohol-related thiamine deficiency, and TAON. Thiamin, cobalamin, and folate substituion improved TAON but major cognitive deficits remained. When admitted to our center 4 months later, he was fully reliant on care staff for all activities of daily living (ADL). Through intensive neurocognive training and psychological treatment he improved gradually and, after 26 months, was well enough to be discharged into the community and pursue work in a sheltered setting. Neuropsychological tests, as well as patient reports obtained at the follow-ups showed that the benefits apparent at discharge had been sustained, and for some scores, improved further. This was particularly evident in the Rey-Osterrieth Complex Figure Test which improved from percentage ranges <1 for immediate recognition and recall at discharge to rank 16 for immediate recognition and rank 5 for recall at the 7-year follow-up. This case study illustrates the immense benefits neurorehabilitation can have for WKS induced by alcohol misuse. It further demonstrates how skills and strategies, learned in the inpatient setting, translate into living well and independently, and how the latter promotes further improvement long after discharge.

6.
Neurorehabil Neural Repair ; 35(5): 383-392, 2021 05.
Article in English | MEDLINE | ID: mdl-33703971

ABSTRACT

BACKGROUND: The negative discrepancy between residual functional capacity and reduced use of the contralesional hand, frequently observed after a brain lesion, has been termed Learned Non-Use (LNU) and is thought to depend on the interaction of neuronal mechanisms during recovery and learning-dependent mechanisms. OBJECTIVE: Albeit the LNU phenomenon is generally accepted to exist, currently, no transdisciplinary definition exists. Furthermore, although therapeutic approaches are implemented in clinical practice targeting LNU, no standardized diagnostic routine is described in the available literature. Our objective was to reach consensus regarding a definition as well as synthesize knowledge about the current diagnostic procedures. METHODS: We used a structured group communication following the Delphi method among clinical and scientific experts in the field, knowledge from both, the work with patient populations and with animal models. RESULTS: Consensus was reached regarding a transdisciplinary definition of the LNU phenomenon. Furthermore, the mode and strategy of the diagnostic process, as well as the sources of information and outcome parameters relevant for the clinical decision making, were described with a wide range showing the current lack of a consistent universal diagnostic approach. CONCLUSIONS: The need for the development of a structured diagnostic procedure and its implementation into clinical practice is emphasized. Moreover, it exists a striking gap between the prevailing hypotheses regarding the mechanisms underlying the LNU phenomenon and the actual evidence. Therefore, basic research is needed to bridge between bedside and bench and eventually improve clinical decision making and further development of interventional strategies beyond the field of stroke rehabilitation.


Subject(s)
Delphi Technique , Diagnostic Techniques, Neurological , Movement Disorders/diagnosis , Neurological Rehabilitation/methods , Perceptual Disorders/diagnosis , Stroke/complications , Upper Extremity/physiopathology , Humans , Movement Disorders/etiology , Movement Disorders/rehabilitation , Perceptual Disorders/etiology , Perceptual Disorders/rehabilitation
7.
Sleep ; 44(3)2021 03 12.
Article in English | MEDLINE | ID: mdl-33401305

ABSTRACT

Sleep promotes adaptation of behavior and underlying neural plasticity in comparison to active wakefulness. However, the contribution of its two main characteristics, sleep-specific brain activity and reduced stimulus interference, remains unclear. We tested healthy humans on a texture discrimination task, a proxy for neural plasticity in primary visual cortex, in the morning and retested them in the afternoon after a period of daytime sleep, passive waking with maximally reduced interference, or active waking. Sleep restored performance in direct comparison to both passive and active waking, in which deterioration of performance across repeated within-day testing has been linked to synaptic saturation in the primary visual cortex. No difference between passive and active waking was observed. Control experiments indicated that deterioration across wakefulness was retinotopically specific to the trained visual field and not due to unspecific performance differences. The restorative effect of sleep correlated with time spent in NREM sleep and with electroencephalographic slow wave energy, which is thought to reflect renormalization of synaptic strength. The results indicate that sleep is more than a state of reduced stimulus interference, but that sleep-specific brain activity restores performance by actively refining cortical plasticity.


Subject(s)
Sleep , Wakefulness , Electroencephalography , Humans , Neuronal Plasticity , Rest
8.
Brain Inj ; 35(1): 72-81, 2021 01 05.
Article in English | MEDLINE | ID: mdl-33307834

ABSTRACT

Objective: To investigate the characteristics of head injury (HI) and its association with offending behaviour, psychological and neurobehavioral functioning, and cognitive performance in female prisoners.Methods: Using a cross-sectional design, female prisoners in the UK reporting a HI with a loss of consciousness (LOC) over ten minutes (n = 10) were compared with a group without a HI with LOC over ten minutes (n = 41) across a range of measures; including scores on standardized clinical questionnaires and performance-based cognitive assessments. Semi-structured clinical interviews assessed HI and forensic history, with forensic history triangulated against the prison database.Results: Domestic abuse was the most frequently reported cause of HI. The HI with LOC group had been to prison a greater number of times and had committed a greater number violent offences. No significant difference was found on self-reported psychological and neurobehavioral measures, or between the groups' cognitive functioning on neuropsychological tests.Conclusions: Psychosocial factors such as trauma may contribute to higher rates of violent offending and imprisonment in those with a HI with LOC. Domestic abuse is an important factor in HI amongst female prisoners. Forensic screening and interventions need to be designed, adapted and evaluated with consideration of trauma and HI.


Subject(s)
Brain Injuries, Traumatic , Craniocerebral Trauma , Prisoners , Cross-Sectional Studies , Female , Humans , Violence
9.
Sleep Med ; 73: 106-116, 2020 09.
Article in English | MEDLINE | ID: mdl-32805477

ABSTRACT

BACKGROUND: Restless Legs Syndrome, a potentially disabling sleep disorder, also known as Willis-Ekbom disease (RLS/WED), may be caused by loss of inhibitory modulation of descending central motor pathways, structural changes in the somatosensory cortex, abnormal connectivity between motor and sensory areas, as well as by subtle abnormalities in white matter micro-organization. OBJECTIVE: To compare diffusion-tensor imaging (DTI) metrics in areas associated with sensory or motor function, as well as sensorimotor integration, between subjects with primary mild-to-severe RLS/WED and controls. METHODS: DTI metrics were assessed in 38 subjects with RLS/WED (14 mild to moderate, 24 severe to very severe) and 24 healthy age-matched controls with whole-brain Tract Based Spatial Statistics (TBSS), Region-of-interest (ROI) and probabilistic tractography based analyses. The ROIs corresponded to the corticospinal tract (CST) at the level of the cerebral peduncle; the superior, middle and inferior cerebellar peduncles. Subgroup analyses were made according to the severity of RLS/WED symptoms. The corticospinal tract was evaluated with probabilistic tractography. We also explored associations between significant findings and severity of symptoms with the Spearman's correlation coefficient. RESULTS: TBSS analysis revealed decreased axial diffusivity (AD) in the left posterior thalamic radiation in RLS/WED. In subjects with severe RLS/WED, AD was reduced in the left posterior corona radiata and this reduction was negatively correlated with severity of symptoms. ROI-based analysis showed that radial diffusivity (RD) was increased in the superior cerebellar peduncles of individuals with severe RLS/WED. Tractography did not show between-group or subgroup differences. CONCLUSIONS: Our results are consistent with subtle white matter changes, prominently in RLS/WED subjects with more severe symptoms, in areas related to sensory or motor function, as well as to sensorimotor integration, compared to controls. These findings support the hypothesis, raised by prior pathophysiological studies, of defective integration within these networks.


Subject(s)
Restless Legs Syndrome , White Matter , Brain/diagnostic imaging , Diffusion Tensor Imaging , Humans , Restless Legs Syndrome/diagnostic imaging , Severity of Illness Index , White Matter/diagnostic imaging
10.
J Correct Health Care ; 25(4): 313-327, 2019 10.
Article in English | MEDLINE | ID: mdl-31742464

ABSTRACT

There is a high prevalence of traumatic brain injury (TBI) in prisoners, but screening tools for identifying TBI in female prisoners are not readily available. Using a cross-sectional design, the psychometric properties of the Brain Injury Screening Index (BISI) were investigated in a closed United Kingdom female prison. Purposive sampling comprised 56 females. Assessment included clinical interview, the BISI, self-report measures of mood, and a battery of measures of cognitive functioning. Seven of the 10 clinical indicators on the BISI met test-retest reliability criteria. Two of the three BISI summary variables demonstrated correlations with questionnaires in the hypothesized directions; however, only two BISI variables were associated with cognitive functioning. Findings support further investigation into the validity and reliability of the BISI with a larger sample.


Subject(s)
Brain Injuries, Traumatic/diagnosis , Cognitive Dysfunction/diagnosis , Mass Screening/standards , Prisoners/psychology , Adolescent , Adult , Aged , Aged, 80 and over , Brain Injuries, Traumatic/epidemiology , Cognitive Dysfunction/epidemiology , Cross-Sectional Studies , Female , Humans , Middle Aged , Prevalence , Psychometrics , Reproducibility of Results , Self Report , United Kingdom/epidemiology , Young Adult
11.
Sleep Med ; 62: 34-42, 2019 10.
Article in English | MEDLINE | ID: mdl-31539846

ABSTRACT

BACKGROUND: Decreased short-interval intracortical inhibition (SICI) to transcranial magnetic stimulation (TMS) of the primary motor cortex was described in subjects with restless legs syndrome/Willis-Ekbom disease (RLS/WED). It remained to be determined whether the magnitude of SICI decrease would be similar across levels of RLS/WED severity. Moreover, it was unknown whether, in addition to decreases in SICI, changes in cortical thickness or area could be detected in subjects with RLS/WED compared to controls. The objective of this study was to compare SICI, cortical thickness, and cortical area in subjects with idiopathic mild to moderate RLS/WED, severe to very severe RLS/WED, and controls. METHODS: The severity of RLS/WED was assessed by the International Restless Legs Syndrome Severity Scale (IRLSS). SICI and 3T magnetic resonance imaging (MRI) data of subjects with RLS/WED and controls were compared. A receiver operating characteristic curve for SICI was designed for discrimination of participants with RLS/WED from controls. Cortical thickness and area were assessed by automated surface-based analysis. RESULTS: SICI was significantly reduced in patients with mild to moderate and severe to very severe RLS/WED, compared to controls (one-way analysis of variance: F = 9.62, p < 0.001). Receiver operating characteristic curve analysis predicted RLS/WED when SICI was above 35% (area under the curve = 0.79, 95% CI 0.67-0.91, p < 0.001). Analyses of the whole brain and of regions of interest did not reveal differences in gray matter thickness or area between controls and subjects with RLS/WED. CONCLUSION: SICI is an accurate cortical biomarker that can support the diagnosis of RLS/WED even in subjects with mild symptoms, but cortical thickness and area were not useful for discriminating subjects with this condition from controls.


Subject(s)
Brain/diagnostic imaging , Motor Cortex/diagnostic imaging , Restless Legs Syndrome/therapy , Transcranial Magnetic Stimulation/adverse effects , Adult , Brain/physiopathology , Brazil/epidemiology , Case-Control Studies , Cortical Excitability , Evoked Potentials, Motor , Female , Humans , Magnetic Resonance Imaging/methods , Male , Middle Aged , Motor Cortex/physiopathology , Quality of Life , Receptors, GABA-A/physiology , Restless Legs Syndrome/diagnosis , Restless Legs Syndrome/physiopathology , Sensitivity and Specificity , Severity of Illness Index , Transcranial Magnetic Stimulation/methods
12.
Neurology ; 92(15): e1773-e1785, 2019 04 09.
Article in English | MEDLINE | ID: mdl-30850441

ABSTRACT

OBJECTIVE: The aim of this phase 2 trial was to ascertain the feasibility and effect of community-based aerobic exercise training for people with 2 of the more common neuromuscular diseases: Charcot-Marie-Tooth disease type 1A (CMT) and inclusion body myositis (IBM). METHODS: A randomized single-blinded crossover trial design was used to compare a 12-week aerobic training program using recombinant exercise bicycles compared to a control period. The training occurred 3 times per week in community gyms local to the participants. Support was available from trained gym staff and a research physiotherapist. The 2 disease groups were analyzed separately. The primary outcome measure was peak oxygen uptake (VO2 peak) during a maximal exercise test, with secondary measures of muscle strength, function, and patient-reported measures. RESULTS: Data from 23 people with CMT and 17 people with IBM were included in the analysis. Both disease groups had high levels of participation and demonstrated improvements in VO2 peak, with a moderate effect size in the CMT participants (Cohen d = 0.53) and a strong effect size in the IBM group (Cohen d = 1.72). No major changes were observed in the secondary outcome measures. Qualitative interviews revealed that participants valued the support of gym instructors and the research physiotherapists in overcoming challenges to participation. CONCLUSION: Twelve weeks of aerobic training in community gyms was feasible, safe, and improved aerobic capacity in people with CMT and IBM. CLASSIFICATION OF EVIDENCE: This study provides Class II evidence that for patients with CMT type 1A and IBM, an aerobic training program increases aerobic capacity.


Subject(s)
Community Health Services , Exercise Therapy/organization & administration , Exercise , Neuromuscular Diseases/therapy , Adult , Anaerobic Threshold , Charcot-Marie-Tooth Disease/therapy , Cross-Over Studies , Feasibility Studies , Female , Humans , Male , Middle Aged , Muscle Strength , Myositis, Inclusion Body/therapy , Neuromuscular Diseases/metabolism , Single-Blind Method , Treatment Outcome
13.
Brain Stimul ; 12(3): 674-683, 2019.
Article in English | MEDLINE | ID: mdl-30639236

ABSTRACT

BACKGROUND: Arousal and sleep represent basic domains of behavior, and alterations are of high clinical importance. OBJECTIVE/HYPOTHESIS: The aim of this study was to further elucidate the neurobiology of insomnia disorder (ID) and the potential for new treatment developments, based on the modulation of cortical activity through the non-invasive brain stimulation technique transcranial direct current stimulation (tDCS). Specifically, we tested the hypotheses that bi-frontal anodal tDCS shortens and cathodal tDCS prolongs total sleep time in patients with ID, compared to sham stimulation. Furthermore, we tested for differences in indices of arousal between ID patients and healthy controls and explored their potential impact on tDCS effects. METHODS: Nineteen ID patients underwent a within-subject repeated-measures sleep laboratory study with adaptation, baseline and three experimental nights. Bifrontal anodal, cathodal and sham tDCS was delivered in a counterbalanced order immediately prior to sleep. Wake EEG was recorded prior to and after tDCS as well as on the following morning. Subsequently, we compared patients with ID to a healthy control group from an earlier dataset. RESULTS: Against our hypothesis, we did not observe any tDCS effects on sleep continuity or sleep architecture in patients with ID. Further analyses of nights without stimulation demonstrated significantly increased levels of arousal in ID patients compared to healthy controls, as indexed by subjective reports, reduced total sleep time, increased wake after sleep onset and increased high frequency EEG power during wakefulness and NREM sleep. Of note, indices of increased arousal predicted the lack of effect of tDCS in ID patients. CONCLUSIONS: Our study characterizes for the first time differential effects of tDCS on sleep in patients with ID and healthy controls, presumably related to persistent hyperarousal in ID. These findings suggest that adapted tDCS protocols need to be developed to modulate arousal and sleep dependent on baseline arousal levels.


Subject(s)
Arousal , Sleep Initiation and Maintenance Disorders/physiopathology , Sleep , Transcranial Direct Current Stimulation/methods , Adult , Case-Control Studies , Female , Humans , Male , Middle Aged , Sleep Initiation and Maintenance Disorders/therapy , Wakefulness
14.
J Sleep Res ; 28(2): e12786, 2019 04.
Article in English | MEDLINE | ID: mdl-30421469

ABSTRACT

Quantification of sleep is important for the diagnosis of sleep disorders and sleep research. However, the only widely accepted method to obtain sleep staging is by visual analysis of polysomnography (PSG), which is expensive and time consuming. Here, we investigate automated sleep scoring based on a low-cost, mobile electroencephalogram (EEG) platform consisting of a lightweight EEG amplifier combined with flex-printed cEEGrid electrodes placed around the ear, which can be implemented as a fully self-applicable sleep system. However, cEEGrid signals have different amplitude characteristics to normal scalp PSG signals, which might be challenging for visual scoring. Therefore, this study evaluates the potential of automatic scoring of cEEGrid signals using a machine learning classifier ("random forests") and compares its performance with manual scoring of standard PSG. In addition, the automatic scoring of cEEGrid signals is compared with manual annotation of the cEEGrid recording and with simultaneous actigraphy. Acceptable recordings were obtained in 15 healthy volunteers (aged 35 ± 14.3 years) during an extended nocturnal sleep opportunity, which induced disrupted sleep with a large inter-individual variation in sleep parameters. The results demonstrate that machine-learning-based scoring of around-the-ear EEG outperforms actigraphy with respect to sleep onset and total sleep time assessments. The automated scoring outperforms human scoring of cEEGrid by standard criteria. The accuracy of machine-learning-based automated scoring of cEEGrid sleep recordings compared with manual scoring of standard PSG was satisfactory. The findings show that cEEGrid recordings combined with machine-learning-based scoring holds promise for large-scale sleep studies.


Subject(s)
Actigraphy/methods , Electroencephalography/methods , Machine Learning/standards , Sleep Stages/physiology , Sleep Wake Disorders/diagnosis , Adult , Female , Humans , Male
15.
Front Hum Neurosci ; 12: 452, 2018.
Article in English | MEDLINE | ID: mdl-30534063

ABSTRACT

Electroencephalography (EEG) recordings represent a vital component of the assessment of sleep physiology, but the methodology presently used is costly, intrusive to participants, and laborious in application. There is a recognized need to develop more easily applicable yet reliable EEG systems that allow unobtrusive long-term recording of sleep-wake EEG ideally away from the laboratory setting. cEEGrid is a recently developed flex-printed around-the-ear electrode array, which holds great potential for sleep-wake monitoring research. It is comfortable to wear, simple to apply, and minimally intrusive during sleep. Moreover, it can be combined with a smartphone-controlled miniaturized amplifier and is fully portable. Evaluation of cEEGrid as a motion-tolerant device is ongoing, but initial findings clearly indicate that it is very well suited for cognitive research. The present study aimed to explore the suitability of cEEGrid for sleep research, by testing whether cEEGrid data affords the signal quality and characteristics necessary for sleep stage scoring. In an accredited sleep laboratory, sleep data from cEEGrid and a standard PSG system were acquired simultaneously. Twenty participants were recorded for one extended nocturnal sleep opportunity. Fifteen data sets were scored manually. Sleep parameters relating to sleep maintenance and sleep architecture were then extracted and statistically assessed for signal quality and concordance. The findings suggest that the cEEGrid system is a viable and robust recording tool to capture sleep and wake EEG. Further research is needed to fully determine the suitability of cEEGrid for basic and applied research as well as sleep medicine.

16.
Front Hum Neurosci ; 12: 95, 2018.
Article in English | MEDLINE | ID: mdl-29623034

ABSTRACT

Motor learning studies face the challenge of differentiating between real changes in performance and random measurement error. While the traditional p-value-based analyses of difference (e.g., t-tests, ANOVAs) provide information on the statistical significance of a reported change in performance scores, they do not inform as to the likely cause or origin of that change, that is, the contribution of both real modifications in performance and random measurement error to the reported change. One way of differentiating between real change and random measurement error is through the utilization of the statistics of standard error of measurement (SEM) and minimal detectable change (MDC). SEM is estimated from the standard deviation of a sample of scores at baseline and a test-retest reliability index of the measurement instrument or test employed. MDC, in turn, is estimated from SEM and a degree of confidence, usually 95%. The MDC value might be regarded as the minimum amount of change that needs to be observed for it to be considered a real change, or a change to which the contribution of real modifications in performance is likely to be greater than that of random measurement error. A computer-based motor task was designed to illustrate the applicability of SEM and MDC to motor learning research. Two studies were conducted with healthy participants. Study 1 assessed the test-retest reliability of the task and Study 2 consisted in a typical motor learning study, where participants practiced the task for five consecutive days. In Study 2, the data were analyzed with a traditional p-value-based analysis of difference (ANOVA) and also with SEM and MDC. The findings showed good test-retest reliability for the task and that the p-value-based analysis alone identified statistically significant improvements in performance over time even when the observed changes could in fact have been smaller than the MDC and thereby caused mostly by random measurement error, as opposed to by learning. We suggest therefore that motor learning studies could complement their p-value-based analyses of difference with statistics such as SEM and MDC in order to inform as to the likely cause or origin of any reported changes in performance.

17.
Behav Cogn Psychother ; 46(6): 641-660, 2018 Nov.
Article in English | MEDLINE | ID: mdl-29478417

ABSTRACT

BACKGROUND: Cognitive behavioural therapy for insomnia (CBTI) has been successfully applied to those with chronic illness. However, despite the high prevalence of post-stroke insomnia, the applicability of CBTI for this population has not been substantially researched or routinely used in clinical practice. AIMS: The present study developed a 'CBTI+' protocol for those with post-stroke insomnia and tested its efficacy. The protocol also incorporated additional management strategies that considered the consequences of stroke. METHOD: A single-case experimental design was used with five community-dwelling individuals with post-stroke insomnia. Daily sleep diaries were collected over 11 weeks, including a 2-week baseline, 7-week intervention and 2-week follow-up. The Insomnia Severity Index, Dysfunctional Attitudes and Beliefs About Sleep Scale, Epworth Sleepiness Scale, Fatigue Severity Scale and Stroke Impact Scale were administered pre- and post-treatment, as well as at 2-week follow-up. RESULTS: At post-treatment, three participants no longer met diagnostic criteria for insomnia and all participants showed improvements on two or more sleep parameters, including sleep duration and sleep onset latency. Three participants showed a reduction in daytime sleepiness, increased quality of life and reduction in unhelpful beliefs about sleep. CONCLUSIONS: This study provides initial evidence that CBTI+ is a feasible and acceptable intervention for post-stroke insomnia. Furthermore, it indicates that sleep difficulties in community-dwelling stroke populations are at least partly maintained by unhelpful beliefs and behaviours. The development and delivery of the CBTI+ protocol has important clinical implications for managing post-stroke insomnia and highlights directions for future research.


Subject(s)
Cognitive Behavioral Therapy/methods , Cognitive Behavioral Therapy/standards , Sleep Initiation and Maintenance Disorders/psychology , Sleep Initiation and Maintenance Disorders/therapy , Stroke/complications , Aged , Attitude , Chronic Disease/psychology , Chronic Disease/therapy , Female , Humans , Male , Middle Aged , Quality of Life , Sleep , Sleep Initiation and Maintenance Disorders/complications , Treatment Outcome
18.
Arq Neuropsiquiatr ; 76(1): 26-31, 2018 Jan.
Article in English | MEDLINE | ID: mdl-29364391

ABSTRACT

Motor imagery has emerged as a potential rehabilitation tool in stroke. The goals of this study were: 1) to develop a translated and culturally-adapted Brazilian-Portugese version of the Kinesthetic and Visual Motor Imagery Questionnaire (KVIQ20-P); 2) to evaluate the psychometric characteristics of the scale in a group of patients with stroke and in an age-matched control group; 3) to compare the KVIQ20 performance between the two groups. Test-retest, inter-rater reliabilities, and internal consistencies were evaluated in 40 patients with stroke and 31 healthy participants. In the stroke group, ICC confidence intervals showed excellent test-retest and inter-rater reliabilities. Cronbach's alpha also indicated excellent internal consistency. Results for controls were comparable to those obtained in persons with stroke. The excellent psychometric properties of the KVIQ20-P should be considered during the design of studies of motor imagery interventions for stroke rehabilitation.


Subject(s)
Imagery, Psychotherapy/standards , Motor Activity/physiology , Stroke Rehabilitation , Surveys and Questionnaires/standards , Adult , Aged , Brazil , Cross-Cultural Comparison , Humans , Kinesthesis , Middle Aged , Psychometrics , Reproducibility of Results , Stroke Rehabilitation/instrumentation , Translations
19.
Arq. neuropsiquiatr ; 76(1): 26-31, Jan. 2018. tab, graf
Article in English | LILACS | ID: biblio-888344

ABSTRACT

ABSTRACT Motor imagery has emerged as a potential rehabilitation tool in stroke. The goals of this study were: 1) to develop a translated and culturally-adapted Brazilian-Portugese version of the Kinesthetic and Visual Motor Imagery Questionnaire (KVIQ20-P); 2) to evaluate the psychometric characteristics of the scale in a group of patients with stroke and in an age-matched control group; 3) to compare the KVIQ20 performance between the two groups. Methods Test-retest, inter-rater reliabilities, and internal consistencies were evaluated in 40 patients with stroke and 31 healthy participants. Results In the stroke group, ICC confidence intervals showed excellent test-retest and inter-rater reliabilities. Cronbach's alpha also indicated excellent internal consistency. Results for controls were comparable to those obtained in persons with stroke. Conclusions The excellent psychometric properties of the KVIQ20-P should be considered during the design of studies of motor imagery interventions for stroke rehabilitation.


RESUMO A Imagética Mental é uma ferramenta em potencial para a reabilitação de indivíduos com doenças cerebrovasculares. Os objetivos desse estudo foram: 1) Desenvolver uma versão traduzida e adaptada culturalmente do Questionário de Imagética Motora Cinestésica e Visual (KVIQ20-P); 2) Avaliar as características psicométricas da escala nesse grupo e em controles; 3) Comparar o desempenho na escala entre os dois grupos. Métodos Confiabilidades teste-reteste, interexaminador, assim como consistências internas da KVIQ20-P foram avaliadas em 40 indivíduos com AVC e em 31 controles. Resultados No grupo de pacientes, os intervalos de confiança mostraram excelentes confiabilidades teste-reteste e interexaminador. O alfa de Cronbach indicou uma excelente consistência interna. Os resultados no grupo controle foram comparáveis aos obtidos nos pacientes. Conclusões As excelentes propriedades psicométricas da KVIQ20-P devem ser consideradas durante o desenho de estudos de Imagética Mental para a reabilitação de indivíduos com doenças cerebrovasculares.


Subject(s)
Humans , Adult , Middle Aged , Aged , Surveys and Questionnaires/standards , Imagery, Psychotherapy/standards , Stroke Rehabilitation/instrumentation , Motor Activity/physiology , Psychometrics , Translations , Brazil , Cross-Cultural Comparison , Reproducibility of Results , Kinesthesis
20.
PLoS One ; 12(10): e0185931, 2017.
Article in English | MEDLINE | ID: mdl-29020113

ABSTRACT

BACKGROUND: Self-management interventions have become increasingly popular in the management of long-term health conditions; however, little is known about their impact on psychological well-being in people with Multiple Sclerosis (MS). PURPOSE: To examine the effectiveness of self-management interventions on improving depression, anxiety and health related quality of life in people with MS. METHOD: A structured literature search was conducted for the years 2000 to 2016. The review process followed the PRISMA guidelines, and is registered with PROSPERO (no. CRD42016033925). RESULTS: The review identified 10 RCT trials that fulfilled selection criteria and quality appraisal. Self-management interventions improved health-related quality of life in 6 out of 7 studies, with some evidence of improvement in depression and anxiety symptoms. CONCLUSION: Although the results are promising more robust evaluation is required in order to determine the effectiveness of self-management interventions on depression, anxiety and quality of life in people with MS. Evaluation of the data was impeded by a number of methodological issues including incomplete content and delivery information for the intervention and the exclusion of participants representing the disease spectrum. Recommendations are made for service development and research quality improvement.


Subject(s)
Anxiety/complications , Depression/complications , Multiple Sclerosis/psychology , Multiple Sclerosis/therapy , Quality of Life , Self Care , Adult , Aged , Aged, 80 and over , Female , Humans , Male , Middle Aged , Multiple Sclerosis/complications , Treatment Outcome
SELECTION OF CITATIONS
SEARCH DETAIL