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1.
Clin Dermatol ; 2024 Sep 09.
Article in English | MEDLINE | ID: mdl-39260462

ABSTRACT

The new revised MPATH-Dx (Version 2.0) reporting schema for melanocytic lesions is presented herein. Principal changes include the simplification of the previous five-class Version 1.0 to a four-class hierarchy of melanocytic lesions to improve diagnostic agreement and to provide more explicit guidance in the management of patients. Version 2.0 also has clearly defined histopathological criteria for classification of Class I and II lesions now designated as low-grade (mild to moderate) atypia and high-grade (high-end moderate to severe) atypia, respectively. This new revised schema, also includes specific provisions for the less common WHO pathways to melanoma, provides guidance for classifying "intermediate" Class II tumors (melanocytomas), and recognizes a subset of pT1a melanomas with very low risk and possible eventual reclassification as a neoplasm falling short of fully-evolved melanoma.

2.
Cogn Behav Ther ; : 1-15, 2024 Sep 03.
Article in English | MEDLINE | ID: mdl-39225192

ABSTRACT

Scrupulosity is treated as a particular presentation of the symptomatology characteristic for obsessive-compulsive disorder (OCD). However, typical treatment of OCD (e.g. cognitive-behavioral therapy) is less effective in the case of religious scruples. Recently, schema therapy has appeared as an alternative effective treatment in obsessive-compulsive symptomatology. The present study investigated the associations between early maladaptive schemas (EMSs) and scrupulosity in a non-clinical sample of 376 poles. The participants assessed their EMSs with the Young Schema Questionnaire 3 - Short Form and their scrupulosity with the Pennsylvania Inventory of Scrupulosity. We used network analysis to control for the EMS interconnectivity. We showed that accounting for the interactions within the EMSs, three schemas, namely, Punitiveness, Subjugation, and Enmeshment/Undeveloped Self, were positively correlated with scrupulosity. Given the central position of the Negativity/Pessimism schema in the examined network, we suggested that activation of this schema could be indirectly correlated to scruples via an escalation of activation to the Punitiveness, Subjugation, and Enmeshment schemas. The findings suggest that dependency and fear of rejection problems (present in Subjugation and Enmeshment EMSs) and over-compensation by perfectionism (present in Punitiveness EMS) could be addressed in the treatment of scruples.

3.
Q J Exp Psychol (Hove) ; : 17470218241283028, 2024 Sep 05.
Article in English | MEDLINE | ID: mdl-39238183

ABSTRACT

We have a great capacity to remember a large number of items, yet memory is selective. While multiple factors dictate why we remember some things and not others, it is increasingly acknowledged that some objects are more memorable than others. Recent studies show semantically distinctive objects are better remembered, as are objects located in expected scene contexts. However, we know little about how object semantics and context interact to facilitate memory. Here we test the intriguing hypothesis that these factors have complementary benefits for memory. Participants rated the congruency of object-scene pairs, followed by a surprise memory test. We show that object memory is best predicted by semantic familiarity when a object-scene pairing was congruent, but when object-scene pairings were incongruent, semantic statistics have an especially prominent impact. This demonstrates both the item and its schematic relationship to the environment interact to shape what we will and will not remember.

4.
J Health Soc Behav ; : 221465241268434, 2024 Sep 05.
Article in English | MEDLINE | ID: mdl-39235356

ABSTRACT

Few studies examine how high-achieving Black women navigate chronic reproductive health morbidities. Black women are disproportionately more likely to experience uterine fibroids, with earlier onset and more severe symptoms. This study leverages a national mixed-methods data set of Black women academics to examine how they describe symptomatic fibroids impacting their careers and lives. We find that participants (1) actively coped by engaging in superwoman schema, (2) postponed treatment due to the demands of their tenure-track position, and (3) normalized pain. Our findings suggest a potentially high prevalence of uterine fibroids among Black women faculty, that symptomatic fibroids were an impediment to some women's careers, and that women with symptomatic fibroids often identified expectations of their careers as an impediment to seeking timely treatment. We provide insights for how highly educated, successful Black women cope and navigate career stress coupled with challenges resulting from chronic reproductive health morbidities.

5.
J Neuropsychol ; 2024 Sep 08.
Article in English | MEDLINE | ID: mdl-39245899

ABSTRACT

Since the early 1900s, the terms body schema and body image denoted the internal representations of the body. Bonnier's (1905, Revue Neurologique, 13, 605) schema is a conscious spatial representation of the size, shape, and position of the body, and of body parts, whose dysfunction brings about aschématia, and hypo-, hyper-, and paraschématia. The two schemata of Head and Holmes (1911, Brain, 34, 102) are an unconscious plastic postural schema, for the maintenance of posture and balance and for the coding of the position of body parts, and a conscious superficial schema, for the localisation of somatosensory stimuli. Pick's (1922, Psychologische Forschung, 1, 303) body schema refers to a structural description of the body, including the position of body parts and their spatial relationships, defective in autotopagnosia. Schilder's (1935, The image and appearance of the human body) body image is a comprehensive construct, covering physiological, evolutional, neurological and neuropsychological, psychiatric and sociological aspects. Lhermitte's (1939, L'image de notre corps) image, based on the views of the abovementioned authors, is defective in bodily neuropsychological disorders. The two terms have been used interchangeably, to denote (hemi-)asomatognosia, anosognosia, autotopagnosia, depersonalisation, personal neglect, phantom and supernumerary limbs, somatoparaphrenia. Their properties have been summarized with general dichotomies: schema for action in space ("where" system), image for perception ("what" system), after primary sensory processing. While schema and image fractionated into multiple representations of aspects of the body, the two terms are still used to refer to some of these representations, and to their disorders.

6.
Womens Health (Lond) ; 20: 17455057241274923, 2024.
Article in English | MEDLINE | ID: mdl-39238230

ABSTRACT

BACKGROUND: Older Black women experience structural and intersectional disadvantages at the intersection of age, race, and gender. Their disadvantaged social statuses can translate into serious psychological health consequences. One concept that may aid in understanding psychosocial determinants of older Black women's depression risk is the "Strong Black Woman," which suggests that Black women have supernatural strength amidst experiencing adversity and are expected to "be strong" for others by providing self-sacrificial aid without complaint. OBJECTIVES: Drawing inspiration from the "Strong Black Woman" concept, the current study examined whether three psychosocial factors (i.e., mastery, anger suppression, and relational demands (from spouse, children, relatives, and friends)) were associated with depressive symptoms, clinically significant depressive symptoms, and lifetime professionally diagnosed depression among older Black women (i.e., ages 50 years and older). DESIGN: This was a cross-sectional study. Data were drawn from the 2010 to 2012 waves of the Health and Retirement Study (N = 1,217). METHODS: For past-week depressive symptoms, ordinary least squares regression analyses were conducted, and beta coefficients were reported. For clinically significant depressive symptoms (i.e., reporting three or more depressive symptoms in the past week) and lifetime professionally diagnosed depression, binary logistic regression analyses were performed, and odds ratios were reported. RESULTS: Higher levels of mastery were associated with lower risk for depressive symptoms and depression. Anger suppression was associated with higher risk for depressive symptoms and depression. Demands from children and one's spouse were associated with higher depressive symptoms while demands from family were associated with risk for lifetime depression diagnosis. Not having a spouse was associated with heightened risk of depressive symptoms and depression. Interestingly, demands from friends were not associated with depressive symptoms nor diagnosed depression. CONCLUSION: Study findings revealed important nuances in the determinants of depression among older Black women which, in turn, has implications for research and mental health care provision in this population.


Subject(s)
Black or African American , Depression , Humans , Female , Depression/epidemiology , Depression/ethnology , Depression/psychology , Black or African American/psychology , Black or African American/statistics & numerical data , Aged , Middle Aged , Cross-Sectional Studies , Anger , Risk Factors
7.
Biodivers Data J ; 12: e125132, 2024.
Article in English | MEDLINE | ID: mdl-39131439

ABSTRACT

Background: Within the scope of the Helmholtz Metadata Collaboration (HMC), the ADVANCE project - Advanced metadata standards for biodiversity survey and monitoring data: supporting of research and conservation - aimed at supporting rich metadata generation with interoperable metadata standards and semantic artefacts that facilitate data access, integration and reuse across terrestrial, freshwater and marine realms. HMC's mission is to facilitate the discovery, access, machine-readability, and reuse of research data across and beyond the Helmholtz Association. New information: We revised, adapted and expanded existing metadata schemas, vocabularies and thesauri to build a FAIR metadata schema and a metadata entry form built on it for users to provide their metadata instances focused on biodiversity monitoring data. The schema is FAIR because it is both machine-interpretable and follows domain-relevant community standards. This report provides a general overview of the project results and instructions on how to access, re-use and complete the metadata form.

8.
Clin Psychol Psychother ; 31(4): e3040, 2024.
Article in English | MEDLINE | ID: mdl-39140112

ABSTRACT

This article describes the 1-year follow-up of a study into the effectiveness of Schema Therapy (ST) for borderline personality disorder (BPD) and comorbid alcohol use disorder (AUD). In the original study, 20 of these patients participated in a multiple baseline case series design study. The results of the original study were promising (a significant decrease of BPD and AUD symptoms). The present study is aimed at examining the longer term benefits of ST for BPD and comorbid AUD. One year after the cessation of the investigational therapy, 17 of the original participants agreed to participate in this follow-up study. T- or Wilcoxon signed rank tests were performed to compare 1-year follow-up to start of therapy (baseline). The results suggest that the main therapeutic improvements were generally preserved at 1-year follow-up. These findings add to the idea that integrated ST for BPD and comorbid AUD might be effective, also in the long term. A randomized clinical trial is indicated to substantiate this idea.


Subject(s)
Alcoholism , Borderline Personality Disorder , Humans , Borderline Personality Disorder/therapy , Borderline Personality Disorder/psychology , Borderline Personality Disorder/complications , Female , Follow-Up Studies , Adult , Male , Alcoholism/therapy , Alcoholism/psychology , Alcoholism/complications , Treatment Outcome , Comorbidity , Middle Aged , Cognitive Behavioral Therapy/methods
9.
Front Pain Res (Lausanne) ; 5: 1414927, 2024.
Article in English | MEDLINE | ID: mdl-39119526

ABSTRACT

Our mental representation of our body depends on integrating various sensory modalities, such as tactile information. In tactile distance estimation (TDE) tasks, participants must estimate the distance between two tactile tips applied to their skin. This measure of tactile perception has been linked to body representation assessments. Studies in individuals with fibromyalgia (FM), a chronic widespread pain syndrome, suggest the presence of body representation distortions and tactile alterations, but TDE has never been examined in this population. Twenty participants with FM and 24 pain-free controls performed a TDE task on three Body regions (upper limb, trunk, lower limb), in which they manually estimated the interstimuli distance on a tablet. TDE error, the absolute difference between the estimation and the interstimuli distance, was not different between the Groups, on any Body region. Drawings of their body as they felt it revealed clear and frequent distortions of body representation in the group with FM, compared to negligible perturbations in controls. This contrast between distorted body drawings and unaltered TDE suggests a preserved integration of tactile information but an altered integration of this information with other sensory modalities to generate a precise and accurate body representation. Future research should investigate the relative contribution of each sensory information and prior knowledge about the body in body representation in individuals with FM to shed light on the observed distortions.

10.
Eur J Psychotraumatol ; 15(1): 2382652, 2024.
Article in English | MEDLINE | ID: mdl-39087734

ABSTRACT

Background: Posttraumatic stress disorder (PTSD) is associated with high rates of cluster C personality disorders (PD), which may negatively affect PTSD treatment. It is unknown whether concurrent treatment for PTSD and comorbid PD leads to superior treatment effects, compared to standard trauma-focused treatment.Objective: The objective was to test the efficacy of adding personality disorder treatment (group schema therapy; GST) to individual trauma-focused treatment (imagery rescripting; ImRs).Method: A two-arm randomized clinical trial (1:1 allocation ratio) was conducted between 2018 and 2023 at two sites of a mental health institution in the Netherlands. Raters were blind to treatment allocation. Adult outpatients with PTSD and comorbid cluster C personality disorders were randomized to receive either ImRs (12-18 sessions) or ImRs + GST (12-18 ImRs + 52-58 GST). The main outcome was PTSD severity one year after start of treatment measured with the Clinician-Administered PTSD Scale for DSM-5.Results: Of 130 patients (mean [SD] age = 40.6 [11.2], 110 [85%] females), 66 were assigned to ImRs and 64 to ImRs + GST. At 12 months, there were large decreases in PTSD severity (dImRs = 2.42, 95%CI = 1.97-2.87; dImRs + GST = 2.44, 95%CI = 1.99-2.90), but there was no significant difference between conditions (d = 0.02, 95%CI = -0.33-0.36, p = .944). Reductions in personality disorder symptoms and all other secondary outcomes were observed in both conditions. There were no significant differences between conditions on any of the secondary outcomes at 12 months.Conclusion: The more intensive concurrent trauma-focused and personality disorder treatment (ImRs + GST) was not superior to trauma-focused treatment alone (ImRs) for patients with PTSD and comorbid CPD. This suggests that trauma-focused treatment is the preferred primary treatment in patients presenting with both internalizing personality disorder and PTSD, reserving the stepping up to more intensive psychotherapy aimed at the personality disorder as a second line of treatment.Trial registration: ClinicalTrials.gov identifier: NCT03833531.


Concurrent trauma-focused and personality disorder treatment was not superior to only trauma-focused treatment for patients with posttraumatic stress disorder (PTSD) and comorbid cluster C personality disorders.Large reductions in PTSD severity and medium-to-large reductions in all secondary outcomes, including personality disorder symptoms, were observed in both treatment arms.These findings are remarkable, given the higher therapy dosage and specialized treatment for personality disorder comorbidity in the combined treatment arm.


Subject(s)
Personality Disorders , Stress Disorders, Post-Traumatic , Humans , Stress Disorders, Post-Traumatic/therapy , Female , Male , Personality Disorders/therapy , Adult , Netherlands , Comorbidity , Treatment Outcome , Middle Aged
11.
J Autism Dev Disord ; 2024 Aug 22.
Article in English | MEDLINE | ID: mdl-39172201

ABSTRACT

Baby schema refers to physical features perceived as cute, known to trigger attention, induce positive emotions, and prompt social interactions. Given the reduced visual attention to social stimuli observed in individuals on the autism spectrum, the current study examines whether the sensitivity to baby schema is also affected. We expected that the looking time towards cute-featured stimuli would vary with symptom severity levels and would be associated with social affect. Ninety-four children (31 typically developing; 63 diagnosed with autism spectrum disorder - ASD) aged 20-83 months (M = 49.63, SD = 13.59) completed an eye-tracking visual exploration task. Autistic participants were separated into two groups based on symptom severity: children with high autism severity symptoms (HS ASD; N = 23) and low-moderate autism symptoms (LMS ASD; N = 40). Animals and neutral objects were simultaneously presented on the screen along with either human babies (condition 1) or adults (condition 2). The results indicated that visual attention oriented to cute-featured stimuli varied with autism symptom severity: only LMS and TD groups spend more time looking at cute-featured stimuli (babies; animals) than neutral objects. Moreover, children with higher severity in the social affect domain spent less time on the stimuli depicting cute than non-cute stimuli. These findings suggest that autism symptom severity and social skills are linked to variations in visual attention to cute stimuli. Implications of baby schema sensitivity are discussed in relation to the development of social competencies and play, responsiveness to robot-based interventions, as well as appraised relevance in autistic children.

12.
Front Pain Res (Lausanne) ; 5: 1415635, 2024.
Article in English | MEDLINE | ID: mdl-39161648

ABSTRACT

Background: While numeric scales to represent pain intensity have been well validated, individuals use various conceptualizations when assigning a number to pain intensity, referred to as pain rating schema. The 18-item Pain Schema Inventory (PSI-18) quantifies pain rating schema by asking for numeric values for multiple mild, moderate or severe pain conditions. This study aimed to assess the validity and reliability of a shortened form of the PSI, using only 6 items (PSI-6). Methods: A secondary analysis was performed on two existing datasets. The first (n = 641) involved a community-based population that completed the PSI-18. The second (n = 182) included participants with chronic pain who completed the PSI-6 twice, one week apart. We assessed face validity, convergent validity, offset biases, test-retest reliability, and internal consistency of the PSI-6 compared to the PSI-18. Results: Both the PSI-18 and PSI-6 demonstrated excellent face validity. The PSI-6 demonstrated excellent convergent validity relative to the PSI-18, with correlations from r = 0.88 to 0.92. Bland-Altman plots revealed offset biases near zero (< 0.22 on 0-10 scale) across all categories of mild, moderate, severe and average pain. Internal consistency was excellent, with Cronbach's Alpha = 0.91 and 0.80, for PSI-18 and PSI-6 respectively. Test-retest reliability of the PSI-6 was high with correlations from r = 0.70-0.76. Conclusion: The PSI-6 is a valid and reliable tool to assess pain rating schema with reduced subject burden, to better interpret individuals' pain ratings and adjust for inter-individual variability.

13.
J Pers Med ; 14(8)2024 Aug 02.
Article in English | MEDLINE | ID: mdl-39202013

ABSTRACT

The genetics of schizophrenia is so complex that it involves both common variants and rare variants. Rare variant association studies of schizophrenia are challenging because statistical methods for rare variant analysis are under-powered due to the rarity of rare variants. The recent Schizophrenia Exome meta-analysis (SCHEMA) consortium, the largest consortium in this field to date, has successfully identified 10 schizophrenia risk genes from ultra-rare variants by burden test, while more risk genes remain to be discovered by more powerful rare variant association test methods. In this study, we use a recently developed Bayesian rare variant association method that is powerful for detecting sparse rare risk variants that implicates 88 new candidate risk genes associated with schizophrenia from the SCHEMA case-control sample. These newly identified genes are significantly enriched in autism risk genes and GO enrichment analysis indicates that new candidate risk genes are involved in mechanosensory behavior, regulation of cell size, neuron projection morphogenesis, and plasma-membrane-bounded cell projection morphogenesis, that may provide new insights on the etiology of schizophrenia.

14.
Article in English | MEDLINE | ID: mdl-39200582

ABSTRACT

Culture is a central theme across various theories and disciplines, influencing behavior and self-perception through interactions within social groups, families, and legal systems. This influence extends to the general population and particularly impacts sexual and gender minorities (SGMs), resulting in minority stress that contributes to mental health issues and the development of Early Maladaptive Schemas (EMSs). Adolescents within these groups face typical developmental stressors-such as hormonal changes and societal pressures-compounded by prejudice, increasing their vulnerability to depression, anxiety, stress, substance abuse, and eating disorders. Despite these challenges, Schema Therapy (ST) lacks comprehensive studies on the sociocultural aspects influencing EMS acquisition in SGM adolescents. This theoretical review aims to fill this gap by exploring the impact of society and culture on EMS development within SGM adolescents. We recognize the broad spectrum of cultural influences and emphasize the importance of cultural sensitivity and diversity. This review specifically addresses how societal and cultural dynamics impact SGM individuals, acknowledging that while ethnic or other cultural factors are not the focus of this paper, they merit future research. This manuscript will discuss central topics and their impact on LGBTQIA+ youth, including (1) the background (definition of culture, lack of studies on ST focusing on culture, and studies on adverse psychological outcomes), (2) minority stress theory and prejudice against sexual and gender diversity (distal and proximal stressors and sociocultural aspects), (3) EMSs and unmet emotional needs, (4) ST affirmative strategies (working with schema modes, imagery rescripting, chair work, and photo techniques), and (5) final considerations (limitations and research agenda).


Subject(s)
Sexual and Gender Minorities , Humans , Sexual and Gender Minorities/psychology , Adolescent , Female , Male , Culture , Stress, Psychological/psychology , Adaptation, Psychological
15.
Schizophr Res Cogn ; 38: 100320, 2024 Dec.
Article in English | MEDLINE | ID: mdl-39040618

ABSTRACT

Distorted body representations play a major role in the onset and maintenance of Schizophrenia. However, these distortions are difficult to assess because explicit assessments can provoke intense fears about the body and require a good insight. We proposed an implicit motor imagery task to a 14-year-old girl with Early-Onset Schizophrenia. The test consisted of presenting different openings varying in width. For each aperture, the young girl has to say if she could pass through without turning her shoulders. A critical aperture is determined as the first aperture for which she considered she could no longer pass, compared to her shoulders' width. The girl perceived herself as 51 % wider than she was, indicating a significant oversized body schema. The implicit assessments of body schema generate less anxiety and does not require a great level of insight; moreover, those are promising tools for early detection of disease in prodromal phases of Schizophrenia and assistance with differential diagnosis.

16.
Am J Transplant ; 2024 Jul 29.
Article in English | MEDLINE | ID: mdl-39084463

ABSTRACT

Microvascular inflammation (MVI) is a key diagnostic feature of antibody-mediated rejection (AMR), however recipients without donor specific antibodies (DSA) defy etiological classification using C4dptc and conventional DSA assignment. We evaluated MVI≥2 (Banff g+ptc≥2) using Banff 2019 AMR (independent of MVI≥2 but including C4dptc) with unconventional glomerular capillary (C4dglom) and arterial/endothelial (C4dart) immunoperoxidase detection, shared-eplet and subthreshold DSA (MFI 100-499), and capillary ultrastructure from 3398 kidney transplant samples for evidence of AMR. MVI≥2 (n=202 biopsies) from 149 kidneys (12.4% prevalence) correlated with DSA+, C4dptc+, C4dglom+, Banff cg, i, t, ti scores, serum creatinine, proteinuria, and graft failure compared with 202 propensity score matched normal controls. Laboratory reported DSA- MVI≥2 (MFI≥500) occurred in 34.7%, however subthreshold (28.6%), eplet-directed (51.4%), and/or misclassified anti-HLA DSA (12.9%) were identified in 67.1% by forensic reanalysis, with vascular C4d+ staining in 67.1%, and endothelial abnormalities in 57.1%, totalling 87.1%. Etiological analysis attributed 62.9% to AMR (77.8% for DSA- MVI≥2 with glomerulitis) and pure T cellular rejection is 37.1%. C4dptc-DSA- MVI≥2 was unrecognized AMR in 48.0%. Functional outcomes and graft survival were comparable to normal controls. We concluded that DSA- MVI≥2 frequently signified a mild "borderline" phenotype of AMR which was recognizable using novel serological and pathological techniques.

17.
Biomimetics (Basel) ; 9(7)2024 Jul 07.
Article in English | MEDLINE | ID: mdl-39056857

ABSTRACT

The neural or mental simulation of actions is a powerful tool for allowing cognitive agents to develop Prospection Capabilities that are crucial for learning and memorizing key aspects of challenging skills. In previous studies, we developed an approach based on the animation of the redundant human body schema, based on the Passive Motion Paradigm (PMP). In this paper, we show that this approach can be easily extended to hyper-redundant serpentine robots as well as to hybrid configurations where the serpentine robot is functionally integrated with a traditional skeletal infrastructure. A simulation model is analyzed in detail, showing that it incorporates spatio-temporal features discovered in the biomechanical studies of biological hydrostats, such as the elephant trunk or octopus tentacles. It is proposed that such a generative internal model could be the basis for a cognitive architecture appropriate for serpentine robots, independent of the underlying design and control technologies. Although robotic hydrostats have received a lot of attention in recent decades, the great majority of research activities have been focused on the actuation/sensorial/material technologies that can support the design of hyper-redundant soft/serpentine robots, as well as the related control methodologies. The cognitive level of analysis has been limited to motion planning, without addressing synergy formation and mental time travel. This is what this paper is focused on.

18.
Brain Sci ; 14(7)2024 Jul 17.
Article in English | MEDLINE | ID: mdl-39061457

ABSTRACT

BACKGROUND: Misophonia is a chronic condition in which the exposure to specific sounds increases the arousal and recurrence of specific intense negative emotions. We hypothesized that misophonia may be strongly related to maladaptive interpersonal schemas that create difficulties in interpersonal relationships. Subjects with maladaptive interpersonal schemas think that other people try to subjugate, criticize, dominate, exploit, deceive, disregard, and humiliate them. Furthermore, these patients typically endorse a representation of self as mistreated, constricted, harmed, damaged, humiliated, impotent, inadequate, or fragile. METHODS: We describe the course of a treatment of Metacognitive Interpersonal Therapy (MIT) in a young man presenting misophonia and co-occurrent obsessive-compulsive personality disorder (OCPD) and avoidant personality disorder (AvPD), with narcissistic traits and normal hearing. We collected qualitative and quantitative data at the beginning of the intervention and at 2 years follow-up. RESULTS: The therapy aimed at increasing awareness of maladaptive interpersonal schemas and promoting a healthy self. The results reported a significant decrease in misophonia; behavioural experiments were used to increase the quality of social relationships and tolerance to the trigger sounds. CONCLUSIONS: MIT can be an effective therapy for the treatment of misophonia.

19.
Sci Rep ; 14(1): 17282, 2024 07 27.
Article in English | MEDLINE | ID: mdl-39068279

ABSTRACT

Multisensory integration plays a crucial role in building the sense of body ownership, i.e., the perceptual status of one's body for which the body is perceived as belonging to oneself. Temporal and spatial mismatching of visual and tactile signals coming from one's body can reduce ownership feelings towards the body and its parts, i.e., produce disownership feelings. Here, we investigated whether visuo-tactile conflict also affects the sensorimotor representation of the body in space (i.e., body schema) and the perception of the space around the body in terms of action potentiality (i.e., reaching space). In two experiments, body schema (Experiment 1) and reaching space (Experiment 2) were assessed before and after either synchronous or asynchronous visuo-tactile stimulation. Results showed that the asynchronous condition, provoking multisensory conflict, caused disownership over one's hand and concurrently affected the body schema and the reaching space. These findings indicate that body schema and reaching space could be dynamically shaped by the multisensory regularities that build up the sense of body ownership.


Subject(s)
Body Image , Space Perception , Touch Perception , Visual Perception , Humans , Female , Male , Body Image/psychology , Adult , Visual Perception/physiology , Touch Perception/physiology , Young Adult , Space Perception/physiology
20.
Horm Behav ; 164: 105595, 2024 Aug.
Article in English | MEDLINE | ID: mdl-38972246

ABSTRACT

Baby schema features are a specific set of physical features-including chubby cheeks, large, low-set eyes, and a large, round head-that have evolutionary adaptive value in their ability to trigger nurturant care. In this study among nulliparous women (N = 81; M age = 23.60, SD = 0.44), we examined how sensitivity to these baby schema features differs based on individual variations in nurturant care motivation and oxytocin system gene methylation. We integrated subjective ratings with measures of facial expressions and electroencephalography (EEG) in response to infant faces that were manipulated to contain more or less pronounced baby schema features. Linear mixed effects analyses demonstrated that infants with more pronounced baby schema features were rated as cuter and participants indicated greater motivation to take care of them. Furthermore, infants with more pronounced baby schema features elicited stronger smiling responses and enhanced P2 and LPP amplitudes compared to infants with less pronounced baby schema features. Importantly, individual differences significantly predicted baby schema effects. Specifically, women with low OXTR methylation and high nurturance motivation showed enhanced differentiation in automatic neurophysiological responses to infants with high and low levels of baby schema features. These findings highlight the importance of considering individual differences in continued research to further understand the complexities of sensitivity to child cues, including facial features, which will improve our understanding of the intricate neurobiological system that forms the basis of caregiving behavior.


Subject(s)
DNA Methylation , Electroencephalography , Facial Expression , Motivation , Oxytocin , Receptors, Oxytocin , Humans , Female , Motivation/physiology , Oxytocin/metabolism , Oxytocin/genetics , DNA Methylation/physiology , Infant , Receptors, Oxytocin/genetics , Young Adult , Adult , Maternal Behavior/physiology , Infant Behavior/physiology , Male , Mother-Child Relations
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