Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 95
Filtrar
1.
Disabil Health J ; : 101641, 2024 May 15.
Artigo em Inglês | MEDLINE | ID: mdl-38816306

RESUMO

BACKGROUND: Evidence suggests that disabled people have worse mental health than non-disabled people, but the degree to which disability contributes to mental health is unclear. OBJECTIVE: This paper uses 2021 National Health Interview Survey (NHIS) data to estimate the association between disability and depression and anxiety diagnoses as well as psychological distress among adults. METHODS: We calculated disability population prevalence and mental health diagnoses and associated symptoms among 28,534 NHIS respondents. Logistic regressions estimated the odds of depression or anxiety diagnoses and recent psychological distress, controlling for disability and mental health diagnoses. We measured disability using binary and continuum measures of functional disability with the Washington Group Short Set on Functioning. RESULTS: Disabled people have significantly greater odds of both depression and anxiety diagnoses compared to non-disabled people. Those with high functional disability have 552 % greater odds of an anxiety diagnosis (95 % CI: 5.61-7.58; p < 0.01) and 697 % greater odds of a depression diagnosis (95 % CI: 6.97-9.12; p < 0.01) compared to those with no functional disability. Similarly, those with any level of functional disability are more likely to have elevated psychological distress in the past 30 days compared to those with no functional disability. CONCLUSIONS: Findings support the idea that mental health is worse for disabled people compared to non-disabled people, with increasing functional disability associated with worse mental health. This suggests that mental health is not being adequately addressed for those with the greatest functional disability. Future work should seek to better understand the systemic causes of disparities.

2.
J Autism Dev Disord ; 2024 May 21.
Artigo em Inglês | MEDLINE | ID: mdl-38771506

RESUMO

BACKGROUND: Adverse childhood experiences (ACEs) have been associated with poor health outcomes in the general population. However, their impact on autistic youth remains unclear. OBJECTIVE: The primary objective was to understand how childhood adversity is related to the general health, mental health, and physical health of transition-age autistic youth. PARTICIPANTS AND SETTING: Using data from the 2018-2021 National Survey of Children's Health, this cross-sectional study involved 2056 autistic youth aged 12-17. METHODS: Logistic regression was employed to test the association between three measures of ACEs - individual ACEs, cumulative ACEs, and grouped ACEs based on contexts, and health outcomes of autistic youth. RESULTS: Our study observed a high prevalence of ACEs among autistic youth, with a substantially higher proportion experiencing multiple ACEs than their neurotypical peers. Individual ACEs were significantly associated with specific health issues. Cumulative ACEs demonstrated a clear dose-response relationship with health outcomes, with higher ACE counts increasing the likelihood of experiencing poor general health, mental health conditions, and physical health issues. Moreover, grouped ACEs associated with health differently, with community-based ACEs being particularly linked to general health status, mental health conditions, and physical health conditions, while family-based ACEs correlated more with more severe mental health conditions and being overweight. CONCLUSION: These findings collectively emphasize the importance of addressing ACEs as a public health concern among transition-age autistic youth, highlighting the need for targeted interventions, prevention strategies, and support services to mitigate the negative impact of ACEs on the overall well-being of this growing community.

3.
Autism ; 28(6): 1382-1393, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38469707

RESUMO

LAY ABSTRACT: Research has suggested that autistic adults may have a bigger chance of having mental health and physical health conditions such as depression, anxiety, sleep disorders, diabetes, obesity, and heart problems than adults without autism. Unfortunately, the unique healthcare needs of autistic adults are often overlooked, so it is not clear why autistic adults have worse health or what can be done to improve it. This study wants to find out the challenges autistic adults experience in taking care of their health and in going to different doctors. Researchers interviewed autistic adults across the country about their healthcare experiences. The interviewed autistic adults told the researchers about the barriers (things that did not help) and facilitators (things that did help) that impacted whether they received the care they needed. The researchers then organized what they learned from the autistic adults into a model called the Systems Engineering Initiative for Patient Safety model of work system and patient safety. This model explains how different parts of a healthcare system (person, tasks, technology and tools, environment, and organization) interact with one another and impact the healthcare experiences and outcomes of the patients in their care, like autistic adults. Overall, this study advocates for a systems-level approach to improving the healthcare experiences of autistic adults and their health outcomes.


Assuntos
Transtorno Autístico , Acessibilidade aos Serviços de Saúde , Humanos , Adulto , Transtorno Autístico/terapia , Transtorno Autístico/psicologia , Masculino , Feminino , Atenção à Saúde , Pessoa de Meia-Idade , Segurança do Paciente , Adulto Jovem
4.
Health Soc Work ; 49(1): 35-43, 2024 Jan 30.
Artigo em Inglês | MEDLINE | ID: mdl-38041541

RESUMO

More than 8.1 million Americans with disabilities qualify for Supplemental Security Income (SSI) or Social Security Disability Insurance (SSDI). Individuals with disabilities were particularly vulnerable to COVID-19, which may have altered individual and household behavior. Research on the impact of COVID-19 on individuals with disabilities and their families remains limited. Authors analyzed 2020 National Health Interview Survey data. Logistic regression models were applied, controlling for the effects of age, race, sex, income, education, employment, and health status. Households with SSI/SSDI beneficiaries with disabilities were associated with significantly greater odds of delaying or forgoing medical care and receiving needed personal and household care at home due to COVID-19 compared with households without beneficiaries. The health and well-being of households with individuals with disabilities may require more robust and inclusive social work initiatives that aim to reduce adverse pandemic impacts.


Assuntos
COVID-19 , Pessoas com Deficiência , Seguro por Deficiência , Humanos , Estados Unidos/epidemiologia , Pandemias , Previdência Social , COVID-19/epidemiologia , Renda
5.
Matern Child Health J ; 27(12): 2147-2155, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-37452893

RESUMO

OBJECTIVES: Measuring the value-added impact of Leadership Education in Neurodevelopmental Disabilities and Related Disorders (LEND) training on trainees' leadership and career trajectories is necessary to understand program efficacy. In the current study, we leveraged an existing ex post facto design to develop and test a new measure of LEND competencies and compare outcomes of LEND trainees and comparison peers. METHODS: We developed the LEND Outcomes Follow-Up Survey using a multi-step, mixed methods process. A series of focus groups and consultations with key stakeholders identified eight important LEND leadership outcomes: (1) interdisciplinary work; (2) advocacy; (3) intersectional approach; (4) systems perspective; (5) life course perspective; (6) leadership; (7) engagement with maternal and child health populations; and (8) research experience. We developed and piloted this novel survey to measure these LEND leadership outcomes. We used data collected from this novel measure and an existing survey that is used nationally by LEND, to compare the outcomes of 43 LEND trainees and 30 comparison peers at two years post completion of LEND training. RESULTS: We found that, compared to comparison peers, LEND trainees: (1) worked with a greater number of disciplines; (2) were more likely to be engaged in advocacy; (3) were more likely to utilize a systems perspective in their work; (4) were more likely to work with maternal and child health populations; and (5) were more likely to have experience conducting research. CONCLUSIONS: Our findings suggested that LEND training improves LEND leadership outcomes at two years post-completion of LEND training.


Assuntos
Liderança , Transtornos do Neurodesenvolvimento , Criança , Humanos , Seguimentos , Deficiências do Desenvolvimento , Estudos Interdisciplinares , Inquéritos e Questionários
6.
Autism Res ; 16(3): 569-579, 2023 03.
Artigo em Inglês | MEDLINE | ID: mdl-36490360

RESUMO

Approximately 40% of American adults are affected by cardiovascular disease (CVD) risk factors (e.g., high blood pressure, high cholesterol, diabetes, and overweight or obesity), and risk among autistic adults may be even higher. Mechanisms underlying the high prevalence of CVD risk factors in autistic people may include known correlates of CVD risk factors in other groups, including high levels of perceived stress, poor sleep quality, and antipsychotic medication use. A sample of 545 autistic adults without intellectual disability aged 18+ were recruited through the Simons Foundation Powering Autism Research, Research Match. Multiple linear regression models examined the association between key independent variables (self-reported perceived stress, sleep quality, and antipsychotic medication use) and CVD risk factors, controlling for demographic variables (age, sex assigned at birth, race, low-income status, autistic traits). Overall, 73.2% of autistic adults in our sample had an overweight/obesity classification, 45.3% had high cholesterol, 39.4% had high blood pressure, and 10.3% had diabetes. Older age, male sex assigned at birth, and poorer sleep quality were associated with a higher number of CVD risk factors. Using antipsychotic medications was associated with an increased likelihood of having diabetes. Poorer sleep quality was associated with an increased likelihood of having an overweight/obesity classification. Self-reported CVD risk factors are highly prevalent among autistic adults. Both improving sleep quality and closely monitoring CVD risk factors among autistic adults who use antipsychotic medications have the potential to reduce risk for CVD.


Assuntos
Antipsicóticos , Transtorno do Espectro Autista , Transtorno Autístico , Doenças Cardiovasculares , Diabetes Mellitus , Hipertensão , Recém-Nascido , Humanos , Adulto , Masculino , Estados Unidos , Doenças Cardiovasculares/epidemiologia , Doenças Cardiovasculares/induzido quimicamente , Doenças Cardiovasculares/tratamento farmacológico , Antipsicóticos/efeitos adversos , Fatores de Risco , Transtorno Autístico/epidemiologia , Transtorno Autístico/induzido quimicamente , Qualidade do Sono , Sobrepeso , Transtorno do Espectro Autista/tratamento farmacológico , Diabetes Mellitus/epidemiologia , Obesidade/complicações , Obesidade/epidemiologia , Colesterol
7.
Matern Child Health J ; 26(8): 1622-1631, 2022 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-35583590

RESUMO

OBJECTIVES: Assessing the impact of interdisciplinary training programs is highly desirable and needed. However, there are currently no established methods to prospectively assess long-term outcomes of trainees compared to individuals who did not receive training. Our objective was to test the feasibility of a longitudinal, prospective cohort design to evaluate training outcomes, and to use this method to evaluate Leadership Education in Neurodevelopmental Disabilities and Related Disorders (LEND) training outcomes. METHODS: LEND trainees were matched to comparison peers and followed annually for up to five years using a pre-existing outcomes survey. We assessed study feasibility using recruitment and retention data over five years. We then looked at preliminary efficacy of LEND training in LEND trainees compared to comparison peers using the pre-existing outcomes survey. RESULTS: Overall, 68.3% of eligible trainees participated in the Outcomes Study across five years, and 66.0% were matched to comparison peers. On average, 84.4% of LEND trainees and 79.9% of comparison peers completed the outcomes survey annually. Attrition was low at 0.9% for LEND trainees and 2.6% for comparison peers over five years. LEND training demonstrated preliminary efficacy in promoting leadership development: LEND trainees began their careers engaged in more leadership activities than comparison peers, and the rate of growth in their participation in leadership activities was greater. CONCLUSIONS: The design used to assess outcomes is a feasible approach that can be widely used to assess training program outcomes. Analyses suggest that LEND training is efficacious in increasing involvement in leadership activities over time after graduation.


Assuntos
Pessoal de Saúde , Estudos Interdisciplinares , Educação de Pós-Graduação em Medicina , Estudos de Viabilidade , Pessoal de Saúde/educação , Humanos , Liderança , Avaliação de Programas e Projetos de Saúde/métodos , Estudos Prospectivos
8.
Methods Mol Biol ; 2468: 339-356, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35320575

RESUMO

The nematode C. elegans has been used widely to study the genetic and cellular basis of behavior. Yet the laboratory conditions under which it is typically studied offer only a narrow glimpse into the richness of natural behaviors this remarkable animal evolved over 500 million years of evolution. For example, burrowing behavior naturally occurs in the wild, but it remains understudied. Our group studies burrowing in an attempt to expand our understanding of the natural behavioral repertoire of C. elegans. Aside from being an interesting and tractable behavior, burrowing is experimentally useful and permits the titration of the muscular output exerted by C. elegans. Here we describe several burrowing assays that allow the modulation of muscular exertion. We used these to study both adaptive and pathological muscular processes such as muscle hypertrophy and dystrophy, respectively. We believe these assays will be of use for researchers studying the production of locomotion under normal and disease-challenged conditions.


Assuntos
Caenorhabditis elegans , Nematoides , Animais , Comportamento Animal/fisiologia , Caenorhabditis elegans/genética , Locomoção , Esforço Físico/fisiologia
9.
J Neurochem ; 160(2): 234-255, 2022 01.
Artigo em Inglês | MEDLINE | ID: mdl-34816431

RESUMO

The nervous system monitors the environment to maintain homeostasis, which can be affected by stressful conditions. Using mammalian models of chronic stress, we previously observed altered brain levels of GPM6A, a protein involved in neuronal morphology. However, GPM6A's role in systemic stress responses remains unresolved. The nematode Caenorhabditis elegans expresses a GPM6A ortholog, the neuronal membrane glycoprotein 1 (NMGP-1). Because of the shared features between nematode and mammalian nervous systems and the vast genetic tools available in C. elegans, we used the worm to elucidate the role of GPM6A in the stress response. We first identified nmgp-1 expression in different amphid and phasmid neurons. To understand the nmgp-1 role, we characterized the behavior of nmgp-1(RNAi) animals and two nmgp-1 mutant alleles. Compared to control animals, mutant and RNAi-treated worms exhibited increased recovery time from the stress-resistant dauer stage, altered SDS chemosensation and reduced egg-laying rate resulting in egg retention (bag-of-worms phenotype). Silencing of nmgp-1 expression induced morphological abnormalities in the ASJ sensory neurons, partly responsible for dauer exit. These results indicate that nmgp-1 is required for neuronal morphology and for behaviors associated with chemosensation. Finally, we propose nmgp-1 mutants as a tool to screen drugs for human nervous system pathologies.


Assuntos
Adaptação Fisiológica/fisiologia , Comportamento Animal/fisiologia , Caenorhabditis elegans/fisiologia , Glicoproteínas de Membrana/metabolismo , Proteínas do Tecido Nervoso/metabolismo , Animais , Proteínas de Caenorhabditis elegans/metabolismo , Feminino
10.
Artigo em Inglês | MEDLINE | ID: mdl-34539812

RESUMO

BACKGROUND: Although research demonstrates that autistic children are at risk of poor sleep quality, very little is known about sleep quality and its impact on quality of life in autistic adults. We investigated the relationships between sleep quality, perceived stress, and quality of life for autistic adults. METHOD: Data were prospectively collected from both autistic adults (N=40) and non-autistic adults (N=24). Sleep Quality was measured using the Pittsburgh Sleep Quality Index, Perceived Stress was measured using the Perceived Stress Scale, and Quality of Life was measured using the Brief Version of the World Health Organization Quality of Life Scale. We ran OLS regression models to examine the association between study group, perceived stress, sleep quality, and quality of life. We tested for main effects of study group (i.e., autistic or non-autistic), sleep quality, and perceived stress, adjusting for demographic characteristics. Then, we tested the interaction between study group and sleep quality. Finally, we tested a three-way interaction between group, sleep quality, and perceived stress. RESULTS: Autistic adults reported worse sleep quality compared to non-autistic adults. Poorer sleep quality was significantly associated with lower quality of life for all participants in the study. Findings from the three-way interaction indicated that higher perceived stress further exacerbated the relationship between poorer sleep quality and lower quality of life for autistic adults. CONCLUSIONS: These findings suggest that interventions that target both sleep quality and stress could effectively improve quality of life for autistic adults.

11.
J Appl Res Intellect Disabil ; 34(3): 684-694, 2021 May.
Artigo em Inglês | MEDLINE | ID: mdl-33247520

RESUMO

Emerging research tests the impact of United States Medicaid home and community-based (HCBS) waiver policy on outcomes for people with intellectual and developmental disabilities; however, this body of work has yet to be synthesized. We conducted a scoping review to establish what is known about the impact of Medicaid HCBS policy on the lives of people with intellectual and developmental disabilities. Seven studies met final inclusion criteria. Their findings contribute to preliminary evidence that Medicaid HCBS waivers provide economic benefit at the state and federal level, reduce unmet healthcare needs, increase the likelihood that parents will be able to continue working, and reduce racial disparities in access to care. Additional work should compare HCBS waiver programmes, and their causal pathways, as well as draw international comparisons to similar programming, to determine essential infrastructure needed for a successful HCBS programme.


Assuntos
Serviços de Assistência Domiciliar , Deficiência Intelectual , Criança , Serviços de Saúde Comunitária , Deficiências do Desenvolvimento/terapia , Humanos , Medicaid , Estados Unidos
12.
Autism ; 25(3): 831-839, 2021 04.
Artigo em Inglês | MEDLINE | ID: mdl-32757616

RESUMO

LAY ABSTRACT: Epilepsy is more common in autistic children compared to children without autism, but we do not have good estimates of how many autistic adults have epilepsy. We used data from a full population of 7513 autistic adults who received Medicaid in Wisconsin to figure out the proportion of autistic adults who have epilepsy, as compared to 18,429 adults with intellectual disability. We also wanted to assess how often epilepsy is first diagnosed in adulthood. Finally, we wanted to see whether antiepileptic drugs are being used to treat epilepsy in autistic adults. We found that 34.6% of autistic adults with intellectual disability and 11.1% of autistic adults without intellectual disability had epilepsy, compared to 27.0% of adults with intellectual disability alone. Autistic women and autistic adults with intellectual disability were more likely than autistic men and autistic adults without intellectual disability to have both previous and new diagnoses of epilepsy. Finally, we found that antiepileptic medications are commonly prescribed to autistic people who do not have epilepsy potentially to treat mental health conditions or behavior problems, and that antiepileptic medications are not always prescribed to autistic people with epilepsy even though they are indicated as a first-line epilepsy treatment. The findings of this study highlight the need to effectively treat and prevent epilepsy in autistic adults.


Assuntos
Transtorno do Espectro Autista , Transtorno Autístico , Epilepsia , Deficiência Intelectual , Adulto , Anticonvulsivantes/uso terapêutico , Transtorno Autístico/tratamento farmacológico , Transtorno Autístico/epidemiologia , Criança , Epilepsia/tratamento farmacológico , Epilepsia/epidemiologia , Feminino , Humanos , Incidência , Deficiência Intelectual/tratamento farmacológico , Deficiência Intelectual/epidemiologia , Masculino , Medicaid , Prevalência , Wisconsin/epidemiologia
13.
Schizophr Res Cogn ; 19: 100165, 2020 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-31832345

RESUMO

Research on visual perception in schizophrenia suggests a deficit in motion processing. Specifically, difficulties with discriminating motion speed are commonly reported. However, speed discrimination tasks typically require participants to make judgments about the difference between two stimuli in a two-interval forced choice (2IFC) task. Such tasks not only tap into speed processing mechanisms, but also rely on higher executive functioning including working memory and attention which has been shown to be compromised in schizophrenia. We used the Flash Lag illusion to examine speed processing in patients with schizophrenia. Based on previous research showing a strong dependence between motion speed and the illusion magnitude, we expected a deficit in speed processing to alter this relationship. A motion processing deficit in patients would also predict overall reductions in perceived lag. We found the magnitude and speed dependence of the Flash Lag illusion to be similar in patients and controls. Together, the findings suggest no general abnormality in motion speed processing in schizophrenia.

14.
Schizophr Res ; 210: 245-254, 2019 08.
Artigo em Inglês | MEDLINE | ID: mdl-30587425

RESUMO

The predictive coding account of psychosis postulates the abnormal formation of prior beliefs in schizophrenia, resulting in psychotic symptoms. One domain in which priors play a crucial role is visual perception. For instance, our perception of brightness, line length, and motion direction are not merely based on a veridical extraction of sensory input but are also determined by expectation (or prior) of the stimulus. Formation of such priors is thought to be governed by the statistical regularities within natural scenes. Recently, the use of such priors has been attributed to a specific set of well-documented visual illusions, supporting the idea that perception is biased toward what is statistically more probable within the environment. The Predictive Coding account of psychosis proposes that patients form abnormal representations of statistical regularities in natural scenes, leading to altered perceptual experiences. Here we use classical vision experiments involving a specific set of visual illusions to directly test this hypothesis. We find that perceptual judgments for both patients and control participants are biased in accordance with reported probability distributions of natural scenes. Thus, despite there being a suggested link between visual abnormalities and psychotic symptoms in schizophrenia, our results provide no support for the notion that altered formation of priors is a general feature of the disorder. These data call for a refinement in the predictions of quantitative models of psychosis.


Assuntos
Ilusões/fisiologia , Reconhecimento Visual de Modelos/fisiologia , Transtornos Psicóticos/fisiopatologia , Esquizofrenia/fisiopatologia , Adulto , Feminino , Humanos , Ilusões/etiologia , Masculino , Probabilidade , Transtornos Psicóticos/complicações , Esquizofrenia/complicações , Distribuições Estatísticas , Adulto Jovem
15.
J Vis ; 18(11): 3, 2018 10 01.
Artigo em Inglês | MEDLINE | ID: mdl-30326050

RESUMO

Neural responses to visual stimuli are modulated by spatial and temporal context. For example, in primary visual cortex (V1), responses to an oriented target stimulus will be suppressed when embedded within an oriented surround stimulus. This suppression is orientation-specific, with the largest suppression observed when stimuli in the neuron's classical receptive field and surround are of similar orientation. In human psychological experiments, the tilt illusion and tilt aftereffect demonstrate an effect of context on perceived orientation of a target stimulus. Similar to the neurophysiological data, the strength of these effects is modulated by the orientation difference between the target stimulus and context. It has been hypothesized that the neural mechanism underlying both the tilt illusion and tilt aftereffect involves orientation-tuned inhibition in V1. However, to date there is no direct evidence linking human perception of these illusions with measurements of inhibition from human visual cortex. Here, we measured context-induced suppression of neural responses in human visual cortex using functional magnetic resonance imaging (fMRI). In the same participants, we also measured magnitudes of their tilt illusion and tilt aftereffect. Our data revealed a significant relationship between the magnitude of neural suppression in V1 and size of the tilt illusion and tilt aftereffect. That is, participants who showed stronger blood oxygenation level dependent (BOLD) suppression in V1 also perceived stronger shifts in illusory tilt. This agreement between perception and neural responses in human V1 suggests a shared inhibitory mechanism that mediates both spatial and temporal effects of context in human perception.


Assuntos
Pós-Imagem/fisiologia , Ilusões/fisiologia , Neurônios/fisiologia , Córtex Visual/fisiologia , Percepção Visual/fisiologia , Adulto , Feminino , Humanos , Inibição Psicológica , Imageamento por Ressonância Magnética , Masculino , Orientação/fisiologia , Estimulação Luminosa/métodos , Adulto Jovem
16.
R Soc Open Sci ; 5(12): 180885, 2018 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-30662721

RESUMO

The perceptual mechanisms that underlie social experience in schizophrenia are increasingly becoming a target of empirical research. In the context of low-level vision, there is evidence for a reduction in the integration of sensory features in schizophrenia (e.g. increased thresholds for contour detection and motion coherence). In the context of higher-level vision, comparable differences in the integration of sensory features of the face could in theory impair the recognition of important social cues. Here we examine how the sense of where other people are looking relies upon the integration of eye-region cues and head-region cues. Adults with schizophrenia viewed face images designed to elicit the 'Wollaston illusion', a perceptual phenomenon in which the perceived gaze direction associated with a given pair of eyes is modulated by the surrounding sensory context. We performed computational modelling of these psychophysical data to quantify individual differences in the use of facial cues to gaze direction. We find that adults with schizophrenia exhibit a robust perceptual effect whereby their sense of other people's direction of gaze is strongly biased by sensory cues relating to head orientation in addition to eye region information. These results indicate that the visual integration of facial cues to gaze direction in schizophrenia is intact, helping to constrain theories of reduced integrative processing in higher-level and lower-level vision. In addition, robust gaze processing was evident in the tested participants despite reduced performance on a theory of mind task designed to assess higher-level social cognition.

17.
R Soc Open Sci ; 5(12): 180886, 2018 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-30662722

RESUMO

Schizophrenia has been associated with differences in how the visual system processes sensory input. A fundamental mechanism that regulates sensory processing in the brain is gain control, whereby the responses of sensory neurons to a given stimulus are modulated in accordance with the spatial and temporal context. Some studies indicate an impairment of certain cortical gain control mechanisms in schizophrenia in low-level vision, reflected, for instance, in how the visual appearance of a stimulus is affected by the presence of other stimuli around it. In the present study, we investigated higher-level, social vision in schizophrenia, namely the perception of other people's direction of gaze (i.e. a type of face processing). Recent computational modelling work indicates that perceptual aftereffects-changes in perception that occur following repeated exposure to faces that display a specific direction of gaze-are indicative of two distinct forms of gain control involved in the coding of gaze direction across sensory neurons. We find that individuals with schizophrenia display strong perceptual aftereffects following repeated exposure to faces with averted gaze, and a modelling analysis indicates similarly robust gain control in the form of (i) short-term adjustment of channel sensitivities in response to the recent sensory history and (ii) divisive normalization of the encoded gaze direction. Together, this speaks to the typical coding of other people's direction of gaze in the visual system in schizophrenia, including flexible gain control, despite the social-cognitive impairments that can occur in this condition.

18.
Mayo Clin Proc ; 90(10): 1327-37, 2015 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-26434960

RESUMO

OBJECTIVE: To understand motivations, educational needs, and concerns of individuals contemplating whole-exome sequencing (WES) and determine what amount of genetic information might be obtained by sequencing a generally healthy cohort so as to more effectively counsel future patients. PATIENTS AND METHODS: From 2012 to 2014, 40 medically educated, generally healthy scientists at Mayo Clinic were invited to have WES conducted on a research basis; 26 agreed to be in a drawing from which 10 participants were selected. The study involved pre- and posttest genetic counseling and completion of 4 surveys related to the experience and outcomes. Whole-exome sequencing was conducted on DNA from blood from each person. RESULTS: Most variants (76,305 per person; range, 74,505-77,387) were known benign allelic variants, variants in genes of unknown function, or variants of uncertain significance in genes of known function. The results of suspected pathogenic/pathogenic variants in Mendelian disorders and pharmacogenomic variants were disclosed. The mean number of suspected pathogenic/pathogenic variants was 2.2 per person (range, 1-4). Four pharmacogenomic genes were included for reporting; variants were found in 9 of 10 participants. CONCLUSION: This study provides data that may be useful in establishing reality-based patient expectations, outlines specific points to cover during counseling, and increases confidence in the feasibility of providing adequate preparation and counseling for WES in generally healthy individuals.


Assuntos
Atitude do Pessoal de Saúde , Exoma , Aconselhamento Genético/métodos , Testes Genéticos/métodos , Estudo de Associação Genômica Ampla/métodos , Adulto , Feminino , Voluntários Saudáveis , Humanos , Masculino , Avaliação de Processos e Resultados em Cuidados de Saúde , Seleção de Pacientes , Projetos de Pesquisa , Análise de Sequência de DNA/métodos
19.
Front Genet ; 6: 244, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-26257771

RESUMO

Whole exome sequencing (WES) is increasingly being used for diagnosis without adequate information on predictive characteristics of reportable variants typically found on any given individual and correlation with clinical phenotype. In this study, we performed WES on 89 deceased individuals (mean age at death 74 years, range 28-93) from the Mayo Clinic Biobank. Significant clinical diagnoses were abstracted from electronic medical record via chart review. Variants [Single Nucleotide Variant (SNV) and insertion/deletion] were filtered based on quality (accuracy >99%, read-depth >20, alternate-allele read-depth >5, minor-allele-frequency <0.1) and available HGMD/OMIM phenotype information. Variants were defined as Tier-1 (nonsense, splice or frame-shifting) and Tier-2 (missense, predicted-damaging) and evaluated in 56 ACMG-reportable genes, 57 cancer-predisposition genes, along with examining overall genotype-phenotype correlations. Following variant filtering, 7046 total variants were identified (~79/person, 644 Tier-1, 6402 Tier-2), 161 among 56 ACMG-reportable genes (~1.8/person, 13 Tier-1, 148 Tier-2), and 115 among 57 cancer-predisposition genes (~1.3/person, 3 Tier-1, 112 Tier-2). The number of variants across 57 cancer-predisposition genes did not differentiate individuals with/without invasive cancer history (P > 0.19). Evaluating genotype-phenotype correlations across the exome, 202(3%) of 7046 filtered variants had some evidence for phenotypic correlation in medical records, while 3710(53%) variants had no phenotypic correlation. The phenotype associated with the remaining 44% could not be assessed from a typical medical record review. These data highlight significant continued challenges in the ability to extract medically meaningful predictive results from WES.

SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA
...