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1.
J Pediatr ; 263: 113583, 2023 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-37353146

RESUMEN

OBJECTIVE: To identify potential clinical utility of polygenic risk scores (PRS) and exposomic risk scores (ERS) for psychosis and suicide attempt in youth and assess the ethical implications of these tools. STUDY DESIGN: We conducted a narrative literature review of emerging findings on PRS and ERS for suicide and psychosis as well as a literature review on the ethics of PRS. We discuss the ethical implications of the emerging findings for the clinical potential of PRS and ERS. RESULTS: Emerging evidence suggests that PRS and ERS may offer clinical utility in the relatively near future but that this utility will be limited to specific, narrow clinical questions, in contrast to the suggestion that population-level screening will have sweeping impact. Combining PRS and ERS might optimize prediction. This clinical utility would change the risk-benefit balance of PRS, and further empirical assessment of proposed risks would be necessary. Some concerns for PRS, such as those about counseling, privacy, and inequities, apply to ERS. ERS raise distinct ethical challenges as well, including some that involve informed consent and direct-to-consumer advertising. Both raise questions about the ethics of machine-learning/artificial intelligence approaches. CONCLUSIONS: Predictive analytics using PRS and ERS may soon play a role in youth mental health settings. Our findings help educate clinicians about potential capabilities, limitations, and ethical implications of these tools. We suggest that a broader discussion with the public is needed to avoid overenthusiasm and determine regulations and guidelines for use of predictive scores.


Asunto(s)
Salud Mental , Trastornos Psicóticos , Humanos , Adolescente , Intento de Suicidio/prevención & control , Inteligencia Artificial , Trastornos Psicóticos/diagnóstico , Trastornos Psicóticos/psicología , Factores de Riesgo
2.
Compr Psychiatry ; 127: 152413, 2023 11.
Artículo en Inglés | MEDLINE | ID: mdl-37696094

RESUMEN

BACKGROUND: Impairment in intrinsic motivation (IM), the drive to satisfy internal desires like mastery, may play a key role in disability in psychosis. However, we have limited knowledge regarding relative impairments in IM compared to extrinsic motivation (EM) or general motivation (GM), in part due to limitations in existing measures. METHODS: Here we address this gap using a novel Trait Intrinsic and Extrinsic Motivation self-report scale in a sample of n = 243 participants including those with schizophrenia, psychosis-risk, and healthy controls. Each of the 7 IM and 6 EM items used a 7-point Likert scale assessing endorsement of dispositional statements. Bifactor analyses of these items yielded distinct IM, EM, and GM factor scores. Convergent and discriminant validity were examined in relation to General Causality Orientation Scale (GCOS-CP) and Quality of Life 3-item IM measure (QLS-IM). Utility was assessed in relation to psychosis-spectrum (PS) status and CAINS clinical amotivation. RESULTS: IM and EM showed acceptable inter-item consistency (IM: α = 0.88; EM: α = 0.66); the bifactor model exhibited fit that varied from good to borderline to inadequate depending on the specific fit metric (SRMR = 0.038, CFI = 0.94, RMSEA = 0.106 ± 0.014). IM scores correlated with established IM measures: GCOS-CP Autonomy (rho = 0.38, p < 0.01) and QLS-IM (rho = 0.29, p < 0.01). Supporting discriminant validity, IM did not correlate with GCOS-CP Control (rho = -0.14, p > 0.05). Two-year stability in an available longitudinal subset (n = 35) was strong (IM: rho = 0.64, p < 0.01; EM: rho = 0.55, p < 0.01). Trait IM was lower in PS youth (t = 4.24, p < 0.01), and correlated with clinical amotivation (rho = -0.36, p < 0.01); EM did not show significant clinical associations. CONCLUSIONS: These results demonstrate the clinical relevance of IM in psychosis risk. They also provide preliminary support for the reliability, validity and utility of this new Trait IM-EM scale, which addresses a measurement gap and can facilitate identification of neurobehavioral and clinical correlates of IM deficits.


Asunto(s)
Trastornos Psicóticos , Esquizofrenia , Humanos , Adolescente , Motivación , Reproducibilidad de los Resultados , Calidad de Vida , Trastornos Psicóticos/diagnóstico , Esquizofrenia/diagnóstico , Psicometría
3.
Prev Sci ; 2023 Nov 09.
Artículo en Inglés | MEDLINE | ID: mdl-37943446

RESUMEN

Coordinated Specialty Care (CSC) is an evidence-based model for early intervention of first episode psychosis (FEP). Monitoring fidelity to CSC models is essential for proper evaluation of program outcomes and quality improvement. To address variability across CSC programs and fidelity assessment-associated burden, an adapted fidelity scale was developed and implemented statewide in Pennsylvania. This report describes the design and preliminary performance of the adapted scale. The Pennsylvania FEP Fidelity Scale (PA-FEP-FS) assesses adherence to the CSC model by focusing on essential model components of other established fidelity scales, in tandem with program evaluation data. Initial data from fourteen PA-FEP sites from 2018 to 2021 were examined as preliminary validation. Assessment-associated burdens and costs were also estimated. PA-FEP-FS captured essential components of CSC models and proved feasible for implementation across varying program structures, while minimizing burden and cost. Programs utilized annual feedback as CSC benchmarks, evidenced by increased scores over time. PA-FEP-FS provides a model for adapting CSC fidelity scales to meet state- or local-level requirements while reducing assessment burdens and costs that may be associated with existing scales.

4.
Psychiatr Q ; 94(2): 89-102, 2023 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-36820952

RESUMEN

This study examined provider and client perspectives of tele-mental health (TMH) in early psychosis care during the COVID-19 pandemic. To achieve this goal, thirty-three mental health providers and 31 clients from Pennsylvania Coordinated Specialty Care (CSC) programs completed web-based surveys assessing TMH usage, experiences, and perceptions between May and September 2020. Three additional TMH-related questions were asked two years later of PA CSC Program Directors between Feb and March 2022. Descriptive statistics characterized responses. Open-ended items were coded and grouped into themes for qualitative synthesis. As early as mid-2020, participants reported extensive use of TMH technologies, including telephone and video visits. Although most providers and clients preferred in-person care to TMH, most clients still found TMH to be comparable to or better than in-person care; 94% of clients indicated interest in future TMH services. Providers also noted more successes than challenges with TMH. Nine themes emerged regarding provider-perceived client characteristics that could benefit from TMH and were grouped into two categories: client-level (access to technology, comfort with technology, transportation, young age, symptom severity, functioning level, motivation for treatment adherence) and interpersonal-level (external support systems and engagement with program prior to the pandemic) characteristics. Two years later, program directors reported continued perceived advantages of TMH in CSCs, although some barriers persisted. Despite the unexpected shift to TMH in early psychosis programs during the COVID-19 pandemic, findings indicated a relatively positive transition to TMH and perceived promise of TMH as a sustained part of routine care.


Asunto(s)
COVID-19 , Trastornos Psicóticos , Telemedicina , Humanos , Salud Mental , Pandemias , Pennsylvania , Transición de la Salud , Trastornos Psicóticos/terapia
5.
Am J Med Genet A ; 188(8): 2277-2292, 2022 08.
Artículo en Inglés | MEDLINE | ID: mdl-35546306

RESUMEN

Neurofibromatosis Type 1 (NF1) is a common genetic disorder frequently associated with cognitive deficits. Despite cognitive deficits being a key feature of NF1, the profile of such impairments in NF1 has been shown to be heterogeneous. Thus, we sought to quantitatively synthesize the extant literature on cognitive functioning in NF1. A random-effects meta-analysis of cross-sectional studies was carried out comparing cognitive functioning of patients with NF1 to typically developing or unaffected sibling comparison subjects of all ages. Analyses included 50 articles (Total NNF1 = 1,522; MAge = 15.70 years, range = 0.52-69.60), yielding 460 effect sizes. Overall moderate deficits were observed [g = -0.64, 95% CI = (-0.69, -0.60)] wherein impairments differed at the level of cognitive domain. Deficits ranged from large [general intelligence: g = -0.95, 95% CI = (-1.12, -0.79)] to small [emotion: g = -0.37, 95% CI = (-0.63, -0.11)]. Moderation analyses revealed nonsignificant contributions of age, sex, educational attainment, and parental level of education to outcomes. These results illustrate that cognitive impairments are diffuse and salient across the lifespan in NF1. Taken together, these results further demonstrate efforts should be made to evaluate and address cognitive morbidity in patients with NF1 in conjunction with existing best practices.


Asunto(s)
Trastornos del Conocimiento , Neurofibromatosis 1 , Adolescente , Adulto , Anciano , Niño , Preescolar , Cognición , Estudios Transversales , Humanos , Lactante , Persona de Mediana Edad , Neurofibromatosis 1/complicaciones , Neurofibromatosis 1/diagnóstico , Neurofibromatosis 1/genética , Pruebas Neuropsicológicas , Adulto Joven
6.
Schizophr Res ; 267: 141-149, 2024 May.
Artículo en Inglés | MEDLINE | ID: mdl-38547716

RESUMEN

Tobacco smoking is highly prevalent in persons with psychosis and is the leading cause of preventable mortality in this population. Less is known about tobacco smoking in persons with first episode psychosis (FEP) and there have been no estimates about the prevalence of nicotine vaping in FEP. This study reports rates of tobacco smoking and nicotine vaping in young people with FEP enrolled in Coordinated Specialty Care programs in Pennsylvania and Maryland. Using data collected from 2021 to 2023, we examined lifetime and recent smoking and vaping and compared smokers and vapers to nonusers on symptoms, functioning, and substance use. The sample included 445 participants aged 13-35 with recent psychosis onset. Assessments were collected by program staff. Overall, 28 % of participants engaged in either smoking or vaping within 30 days of the admission assessment. Smokers and vapers were disproportionately male, cannabis users, and had lower negative symptom severity than non-smokers. Vapers had higher role and social functioning. Both smoking and vaping were related to a longer time from psychosis onset to program enrollment. We compare these findings to previous studies and suggest steps for addressing smoking and vaping in this vulnerable population.


Asunto(s)
Trastornos Psicóticos , Vapeo , Humanos , Masculino , Vapeo/epidemiología , Femenino , Trastornos Psicóticos/epidemiología , Adulto , Adulto Joven , Adolescente , Fumar Tabaco/epidemiología , Pennsylvania/epidemiología , Maryland/epidemiología , Prevalencia
7.
Disaster Med Public Health Prep ; 17: e488, 2023 09 12.
Artículo en Inglés | MEDLINE | ID: mdl-37697955

RESUMEN

OBJECTIVES: The coronavirus disease (COVID-19) pandemic produced swift, extensive changes in daily life, including for first-episode psychosis (FEP) clients. This study examined pandemic-related psychosocial impacts to clients while engaged in Coordinated Specialty Care (CSC). We also examined FEP client vaccination rates, as vaccinations can reduce hospitalizations/deaths, and related worries. METHODS: Thirty-one clients (45% female; ages 13-39; 26% black, 61% white) from Pennsylvania (PA) CSC outpatient programs completed an online survey evaluating exposure to COVID-19, associated worries, coping, and safety strategies. Descriptive statistics characterized responses and demographic group differences. Additional program evaluation data informed vaccination rates for PA FEP clients. RESULTS: Participants reported substantial pandemic-related impacts to daily life. Many clients reported improved safety measures to protect themselves/others from COVID-19. Clients largely denied substantial worries about infection for themselves, reporting greater concern for loved ones. Multiple coping strategies were endorsed, which, with few exceptions, did not differ among demographic groups. FEP clients had a low reported rate of vaccination (28.6%) as of September 2021. CONCLUSIONS: Observed prolonged pandemic effects may alter FEP client progress in CSC. Stakeholders should be prepared to adjust FEP treatment accordingly in the event of a similar disaster. Concentrated vaccination efforts may be necessary for this population.


Asunto(s)
COVID-19 , Medicina , Trastornos Psicóticos , Humanos , Femenino , Masculino , Pennsylvania/epidemiología , COVID-19/epidemiología , COVID-19/prevención & control , Trastornos Psicóticos/epidemiología , Trastornos Psicóticos/terapia , Adaptación Psicológica
8.
Biol Psychiatry Glob Open Sci ; 3(3): 340-350, 2023 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-37519466

RESUMEN

The phenotype of schizophrenia, regardless of etiology, represents the most studied psychotic disorder with respect to neurobiology and distinct phases of illness. The early phase of illness represents a unique opportunity to provide effective and individualized interventions that can alter illness trajectories. Developmental age and illness stage, including temporal variation in neurobiology, can be targeted to develop phase-specific clinical assessment, biomarkers, and interventions. We review an earlier model whereby an initial glutamate signaling deficit progresses through different phases of allostatic adaptation, moving from potentially reversible functional abnormalities associated with early psychosis and working memory dysfunction, and ending with difficult-to-reverse structural changes after chronic illness. We integrate this model with evidence of dopaminergic abnormalities, including cortical D1 dysfunction, which develop during adolescence. We discuss how this model and a focus on a potential critical window of intervention in the early stages of schizophrenia impact the approach to research design and clinical care. This impact includes stage-specific considerations for symptom assessment as well as genetic, cognitive, and neurophysiological biomarkers. We examine how phase-specific biomarkers of illness phase and brain development can be incorporated into current strategies for large-scale research and clinical programs implementing coordinated specialty care. We highlight working memory and D1 dysfunction as early treatment targets that can substantially affect functional outcome.

9.
JMIR Form Res ; 6(7): e30230, 2022 Jul 08.
Artículo en Inglés | MEDLINE | ID: mdl-35802420

RESUMEN

BACKGROUND: Digital technology, the internet, and social media are increasingly investigated as promising means for monitoring symptoms and delivering mental health treatment. These apps and interventions have demonstrated preliminary acceptability and feasibility, but previous reports suggest that access to technology may still be limited among individuals with psychotic disorders relative to the general population. OBJECTIVE: We evaluated and compared access to and use of technology and social media in young adults with psychotic disorders (PD), young adults with clinical risk for psychosis (CR), and psychosis-free youths (PF). METHODS: Participants were recruited through a coordinated specialty care clinic dedicated toward early psychosis as well as ongoing studies. We surveyed 21 PD, 23 CR, and 15 PF participants regarding access to technology and use of social media, specifically Facebook and Twitter. Statistical analyses were conducted in R. Categorical variables were compared among groups using Fisher exact test, continuous variables were compared using 1-way ANOVA, and multiple linear regressions were used to evaluate for covariates. RESULTS: Access to technology and social media were similar among PD, CR, and PF participants. Individuals with PD, but not CR, were less likely to post at a weekly or higher frequency compared to PF individuals. We found that decreased active social media posting was unique to psychotic disorders and did not occur with other psychiatric diagnoses or demographic variables. Additionally, variation in age, sex, and White versus non-White race did not affect posting frequency. CONCLUSIONS: For young people with psychosis spectrum disorders, there appears to be no "technology gap" limiting the implementation of digital and mobile health interventions. Active posting to social media was reduced for individuals with psychosis, which may be related to negative symptoms or impairment in social functioning.

10.
J Clin Psychiatry ; 84(1)2022 11 30.
Artículo en Inglés | MEDLINE | ID: mdl-36449475

RESUMEN

Background: The coronavirus 2019 (COVID-19) pandemic forced health care globally to provide remote services when feasible. In March 2020, psychiatric outpatient services across the United States transitioned to telehealth. Persons with early psychosis (EP) face challenges to maintain connection with care, an important element associated with better outcome. The ongoing pandemic offers the opportunity to review the feasibility of EP services using telehealth and to evaluate implications for continued implementation.Methods: We examined delivery of coordinated specialty care (CSC) for 49 individuals aged 16-30 years enrolled in an EP (first-episode psychosis and clinical high risk) university-affiliated outpatient clinic located in Philadelphia, Pennsylvania, from March 2020 to July 2021, during which most appointments were delivered through telehealth. The services evaluated in this setting include psychotherapy, medication management, employment and educational services, peer support, and multifamily psychoeducation group. We compared completed and missed appointment rates across services and new enrollment rates with in-person versus hybrid telehealth and in-person care pre-COVID-19 and during the pandemic.Results: In 6 months pre-COVID-19 (September 2019-February 2020), the Psychosis Evaluation and Recovery Center enrolled a mean of 4 people/mo compared to during the pandemic (March 2020-July 2021), when a mean of 2.2 people/mo were enrolled. The total number of completed psychology appointments pre-COVID-19 ranged from 51 to 88 and during the pandemic ranged from 72 to 137. The rate of missed psychology appointments ranged from 1.4% to 6.4% pre-COVID-19 and from 3.4% to 11.3% during the pandemic. The total number of completed medication management appointments pre-COVID-19 ranged from 35 to 59 and during the pandemic ranged from 22 to 66. The rate of missed medication management appointments ranged from 2.1% to 8.0% pre-COVID-19 and from 1.7% to 9.1% during the pandemic. The total number of completed supported education and employment services appointments pre-COVID-19 ranged from 5 to 11 and during the pandemic ranged from 3 to 16. Finally, the mean number of family members in attendance at the family psychoeducation group was 8.3 pre-COVID-19 and 17.1 during the pandemic.Conclusions: New and continued engagement across services in EP CSC during the COVID-19 pandemic supports feasibility of telehealth and suggests that offering a hybrid model of in-person and telehealth should be considered once restrictions are lifted.


Asunto(s)
COVID-19 , Trastornos Psicóticos , Telemedicina , Humanos , Pandemias , Trastornos Psicóticos/terapia , Citas y Horarios
11.
Psychiatry Res ; 188(3): 303-9, 2011 Aug 15.
Artículo en Inglés | MEDLINE | ID: mdl-21601927

RESUMEN

A considerable body of literature has reported on emotion perception deficits and the relevance of these impairments in persons with depression and bipolar disorder. Fifty-one studies published between 1981-February 2009 were examined regarding emotion perception abilities between patient and control groups, and potential methodological, demographic and clinical moderators. Studies were identified through a computerized literature search of the MEDLINE, PsychINFO, and PubMed databases. The Meta-analysis Of Observational Studies in Epidemiology (MOOSE) standard (Stroup et al., 2000) was followed in the extraction of relevant studies and data. Data on emotion perception, methodology, demographic and clinical characteristics were compiled and analyzed using Comprehensive Meta-Analysis version 2.0 (Biostat, 2005). The meta-analysis revealed a moderate deficit in emotion perception in both bipolar disorder and major depressive disorder, irrespective of task type, diagnosis, age of onset/duration of illness, sex, and hospitalization status. Several factors that moderated the observed impairment include self-reported depression, age at time of testing, and years of education. Emotion perception impairment in bipolar disorder and major depressive disorder represents a moderate and stable deficit that appears to be moderated by a limited number of demographic and clinical factors.


Asunto(s)
Trastorno Bipolar/fisiopatología , Depresión/fisiopatología , Emociones/fisiología , Expresión Facial , Adulto , Bases de Datos Factuales/estadística & datos numéricos , Femenino , Humanos , Masculino , Metaanálisis como Asunto , Persona de Mediana Edad
12.
Early Interv Psychiatry ; 15(5): 1395-1408, 2021 10.
Artículo en Inglés | MEDLINE | ID: mdl-33283472

RESUMEN

AIM: Pennsylvania (PA) first-episode psychosis (FEP) program evaluation is a statewide initiative, supported by the PA Office of Mental Health and Substance Abuse Services (PA-OMHSAS) and administered by PA Early Intervention Center/Heads Up, which evaluates fidelity and outcomes of PA Coordinated Specialty Care (CSC) programs. Programs participate in standard computerized measures of CSC outcomes using centralized informatics. The aims of the current report are to describe implementation of this core battery for program evaluation in PA and to present 6- and 12-month outcomes. METHODS: Participants (n = 697) from nine PA CSC programs completed the core battery at admission. The battery was re-administered at 6- and 12-month follow-up, and data were analysed for individuals (n = 230) who had completed 12-months of treatment. Domains assessed via clinician report and/or self-report included symptoms, role and social functioning, self-perceived recovery and service utilization. RESULTS: PA FEP CSC participants showed improvement over time in several domains, including decreased symptoms, higher role and social functioning, decreased hospitalizations, and improved self-perception of recovery, quality of life, and services satisfaction. Trends towards improvements were observed for participant happiness, hopelessness, and school-enrolment. Nearly all improvements were observed at 6-month follow-up, with earlier gains maintained at 12-months. CONCLUSIONS: PA FEP CSC programs demonstrate the ability to assess and improve critical outcomes of coordinated specialty care in PA. Improved outcomes by 12 months in treatment provides evidence of an effective treatment model and supports the continuation of these programs in pursuit of our goal of reducing schizophrenia disease burden on individuals and society.


Asunto(s)
Trastornos Psicóticos , Esquizofrenia , Humanos , Pennsylvania , Evaluación de Programas y Proyectos de Salud , Trastornos Psicóticos/diagnóstico , Trastornos Psicóticos/terapia , Calidad de Vida
13.
Psychiatry Res ; 285: 112783, 2020 Jan 16.
Artículo en Inglés | MEDLINE | ID: mdl-32014626

RESUMEN

A quantitative review of literature concerning olfactory function in 22q11.2 deletion syndrome (22q11DS) patients was performed detailing the scope/magnitude of deficits and probing possible moderators. We searched MEDLINE, EMBASE and PubMed to identify studies for inclusion. Effect sizes were based on differences in psychophysical olfactory tests between 22q11DS patients (n = 194) and typically developing comparison subjects (n = 466). 22q11DS patients exhibited marked olfactory dysfunction (d=-1.11, 95% CI=-1.29<δ<-0.92) that was homogeneous (p = 0.86). Diffuse olfactory deficits were seen which were not moderated by age or sex. 22q11DS patients exhibit large/diffuse deficits in olfactory function that are of a similar magnitude to observed neuropsychological impairments.

14.
Early Interv Psychiatry ; 14(2): 163-171, 2020 04.
Artículo en Inglés | MEDLINE | ID: mdl-31177635

RESUMEN

AIM: Few interventions address social cognition or functioning in individuals at clinical risk (CR) for psychosis. Theatre Improvisation Training to Promote Social Cognition (TIPS) is a manualized intervention based on drama therapy. We aim to describe TIPS, evaluate feasibility and acceptability, and present a preliminary investigation of outcomes in a quasi-experimental design. METHODS: Thirty-six CR participants (15-25 years) were ascertained from the Philadelphia Neurodevelopmental Cohort. Twenty-six completed the TIPS protocol: 18 weekly 2-hour group sessions led by a theatre director and actor-assistant. Participants engaged in collaborative acting and improvisation exercises. Baseline and follow-up assessments included the Clinical Assessment Interview for Negative Symptoms (CAINS), Structured Interview for Prodromal Syndromes, Global Assessment of Functioning (GAF) and Penn Computerized Neurocognitive Battery (CNB), which includes social cognitive tests. Acceptability was assessed using focus groups. Preliminary outcomes were compared to CR controls who were not enrolled in the study but completed follow-up assessments using the same methods. RESULTS: There were no significant differences in baseline demographics, psychosis symptoms, or cognition between those who did and did not complete the protocol. Overall, TIPS was considered feasible and acceptable among CR. Preliminary outcomes suggest that TIPS may be effective in improving positive and negative psychosis-spectrum symptoms and GAF, but not performance on facial emotion processing. CONCLUSIONS: TIPS is a promising and acceptable intervention that may improve symptoms and functioning in CR while providing a framework for participants to develop more empowered and confident ways of relating to others. Larger randomized controlled trials investigating TIPS efficacy are warranted.


Asunto(s)
Psicodrama/métodos , Trastornos Psicóticos/terapia , Cognición Social , Adolescente , Adulto , Estudios de Cohortes , Femenino , Humanos , Masculino , Síntomas Prodrómicos , Psicoterapia de Grupo , Trastornos Psicóticos/psicología , Adulto Joven
15.
Psychiatry Res ; 165(1-2): 27-37, 2009 Jan 30.
Artículo en Inglés | MEDLINE | ID: mdl-18990453

RESUMEN

Schizophrenia patients exhibit abnormalities in several different auditory event-related potential (ERP) measures. It is unclear how these abnormalities relate to each other, since multiple measures are rarely acquired from the same sample. This study addressed two related questions: 1) Are specific auditory ERP measures differentially impaired in schizophrenia? 2) Do abnormalities co-aggregate within the same patients? Nine auditory ERP measures were acquired in a single testing session from 23 schizophrenia patients and 22 healthy subjects. Hierarchical oblique factor analysis revealed that these measures aggregated into four factors, with each loading primarily on a single factor. Patient deficits were observed for two independent factors: N100/mismatch negativity (MMN) and P3a/P3b. N100/MMN abnormalities were associated with symptoms of alogia and formal thought disorder. P3a/P3b abnormalities were associated with avolition, attentional disturbances and delusions. We conclude that deficits in different ERP measures of early sensory processing at the level of the auditory cortex co-occur in patients. These likely represent a single differential deficit indexing the physiological abnormality underlying impaired language and verbal processing. This is relatively independent of a higher cortical deficit that mediates cognitive stimulus evaluation and underlies deficits in motivation, attention and reality testing. Such multidimensional profiling of ERP abnormalities may help to clarify the clinical and genetic heterogeneity of schizophrenia.


Asunto(s)
Trastornos de la Percepción Auditiva/fisiopatología , Electroencefalografía , Potenciales Evocados Auditivos/fisiología , Percepción de la Altura Tonal/fisiología , Esquizofrenia/fisiopatología , Psicología del Esquizofrénico , Procesamiento de Señales Asistido por Computador , Estimulación Acústica , Adolescente , Nivel de Alerta/fisiología , Corteza Auditiva/fisiopatología , Trastornos de la Percepción Auditiva/diagnóstico , Trastornos de la Percepción Auditiva/psicología , Estudios de Casos y Controles , Trastornos del Conocimiento/diagnóstico , Trastornos del Conocimiento/fisiopatología , Trastornos del Conocimiento/psicología , Variación Contingente Negativa/fisiología , Potenciales Relacionados con Evento P300/fisiología , Femenino , Humanos , Masculino , Reflejo de Sobresalto/fisiología , Esquizofrenia/diagnóstico , Filtrado Sensorial/fisiología , Pensamiento/fisiología , Volición , Adulto Joven
16.
Neuropsychopharmacology ; 44(13): 2247-2253, 2019 12.
Artículo en Inglés | MEDLINE | ID: mdl-31112989

RESUMEN

Social impairment occurs across the psychosis spectrum, but its pathophysiology remains poorly understood. Here we tested the hypothesis that reduced differential responses (aversive vs. neutral) in neural circuitry underpinning aversive conditioning of social stimuli characterizes the psychosis spectrum. Participants age 10-30 included a healthy control group (HC, analyzed n = 36) and a psychosis spectrum group (PSY, n = 71), including 49 at clinical risk for psychosis and 22 with a frank psychotic disorder. 3T fMRI utilized a passive aversive conditioning paradigm, with neutral faces as conditioned stimuli (CS) and a scream as the unconditioned stimulus. fMRI conditioning was indexed as the activation difference between aversive and neutral trials. Analysis focused on amygdala, ventromedial prefrontal cortex, and anterior insula, regions previously implicated in aversive and social-emotional processing. Ventromedial prefrontal cortex activated more to neutral than aversive CS; this "safety effect" was driven by HC and reduced in PSY, and correlated with subjective emotional ratings following conditioning. Insula showed the expected aversive conditioning effect, and although no group differences were found, its activation in PSY correlated with anxiety severity. Unexpectedly, amygdala did not show aversive conditioning; its activation trended greater for neutral than aversive CS, and did not differ significantly based on group or symptom severity. We conclude that abnormalities in social aversive conditioning are present across the psychosis spectrum including clinical risk, linked to a failure of safety processing. Aversive and safety learning provide translational paradigms yielding insight into pathophysiology of psychosis risk, and providing potential targets for therapeutic and preventative interventions.


Asunto(s)
Encéfalo/fisiopatología , Condicionamiento Clásico , Trastornos Psicóticos/fisiopatología , Conducta Social , Adolescente , Adulto , Afecto , Amígdala del Cerebelo/fisiopatología , Mapeo Encefálico , Corteza Cerebral/fisiopatología , Niño , Femenino , Humanos , Imagen por Resonancia Magnética , Masculino , Corteza Prefrontal/fisiopatología , Adulto Joven
17.
Schizophr Res ; 102(1-3): 220-9, 2008 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-18457935

RESUMEN

BACKGROUND: Efforts to characterize genetic vulnerability to schizophrenia are increasingly focused on the identification of endophenotypes--neurobiological abnormalities that are evident in individuals at risk. Behavioral studies have demonstrated olfactory impairments in odor detection and identification in unaffected 1st-degree relatives of schizophrenia patients, suggesting that abnormalities in this simple sensory system may serve as candidate endophenotypes. It is unclear, however, whether these behavioral abnormalities reflect basic olfactory sensory processing deficits or nonspecific disruptions of attention and cognition. METHOD: Unirhinal chemosensory olfactory evoked potentials were acquired from 14 unaffected 1st-degree relatives of schizophrenia patients and 20 healthy individuals with equivalent age and gender distributions, using 3 different concentrations of hydrogen sulfide. Subjects were also assessed behaviorally for ability to detect and identify odors. RESULTS: Family members exhibited left nostril olfactory detection impairments and bilateral olfactory identification abnormalities. They had reduced evoked potential response amplitudes for the initial N1 component in the left nostril. The subsequent P2 evoked potential response was reduced bilaterally. The pattern and magnitude of family member deficits were comparable to those previously observed for schizophrenia patients. CONCLUSION: 1st-degree relatives of schizophrenia patients exhibit specific neurophysiological impairments in early olfactory sensory processing. The presence of these neurophysiological abnormalities in both schizophrenia patients and their unaffected 1st-degree relatives suggests that these represent genetically mediated vulnerability markers or endophenotypes of the illness.


Asunto(s)
Familia , Trastornos del Olfato/diagnóstico , Esquizofrenia/diagnóstico , Psicología del Esquizofrénico , Adulto , Grupos Control , Potenciales Evocados/genética , Potenciales Evocados/fisiología , Femenino , Lateralidad Funcional/fisiología , Marcadores Genéticos , Predisposición Genética a la Enfermedad/genética , Humanos , Masculino , Nariz/fisiología , Odorantes , Trastornos del Olfato/genética , Trastornos del Olfato/fisiopatología , Vías Olfatorias/fisiopatología , Fenotipo , Esquizofrenia/genética , Esquizofrenia/fisiopatología , Umbral Sensorial/fisiología , Olfato/fisiología
18.
Schizophr Res ; 99(1-3): 286-93, 2008 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-18248794

RESUMEN

OBJECTIVE: Earlier studies described gaze discrimination impairment in schizophrenia. The purpose of this study was to compare gaze discrimination abilities and associated brain activation in persons with stable schizophrenia and matched controls. METHODS: 13 schizophrenia and 12 healthy participants underwent a gaze discrimination task with face stimuli rotated at 0, 4 and 8 degrees deviation. During fMRI with BOLD imaging, subjects were asked to identify whether a face was making eye contact. Subject-level parameter estimates for BOLD signal change were entered into an orientation by group mixed effect repeated measures ANOVA. RESULTS: Gaze discrimination performance did not differ between groups. Patients showed decreased activation in areas of bilateral inferior frontal and occipital areas, and select temporo-limbic regions, including amygdala. Groups differed by activation patterns according to gaze deviation. In controls, faces with 4 degrees deviation produced higher activation in frontal and temporal regions. In patients, 0 degrees deviation produced increased activation in amygdala and areas of temporal neocortex. CONCLUSIONS: Despite similar gaze discrimination abilities, schizophrenia patients exhibit decreased brain activation in areas associated with executive, emotional and visual processing. Controls exhibited increased activation associated with the more difficult task in select frontal and temporal regions. Patients exhibited increased activation associated with direct gaze in temporal regions, which may relate to common symptoms.


Asunto(s)
Atención/fisiología , Corteza Cerebral/fisiopatología , Discriminación en Psicología/fisiología , Cara , Fijación Ocular/fisiología , Procesamiento de Imagen Asistido por Computador , Imagen por Resonancia Magnética , Orientación/fisiología , Oxígeno/sangre , Reconocimiento Visual de Modelos/fisiología , Esquizofrenia/fisiopatología , Psicología del Esquizofrénico , Adulto , Amígdala del Cerebelo/fisiopatología , Mapeo Encefálico , Dominancia Cerebral/fisiología , Femenino , Lóbulo Frontal/fisiopatología , Humanos , Masculino , Persona de Mediana Edad , Red Nerviosa/fisiopatología , Esquizofrenia/diagnóstico , Lóbulo Temporal/fisiopatología
19.
Schizophr Res ; 105(1-3): 30-9, 2008 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-18793827

RESUMEN

OBJECTIVE: Impaired facial expressions of emotions have been described as characteristic symptoms of schizophrenia. Previous investigations of dynamic facial expressions have reported on global assessment of positive and negative emotion expressions. In this study, we examined facial expression differences based on duration and frequencies of emotion expressions. METHODS: 12 persons with stable schizophrenia and matched healthy controls underwent a standardized procedure for evoked facial expressions of five universal emotions, including happy, sad, anger, fear, and disgust expressions. Subjects completed self-ratings of their emotion experience. Reliable raters coded evoked facial expressions according to the Facial Expression Coding System. For each emotion, facial expressions were coded as target, non-target or neutral expressions. Logistic regression analyses examined group differences in duration and frequencies of facial expressions. RESULTS: Comparing overall duration of and frequencies of emotion expressions revealed affective flattening and inappropriate affect in patients, as evidenced by neutral and non-target expressions. Separated by emotion, impaired emotion expression was found in happy, sad and anger expression, but not for fear and disgust in which expressions were not well recognized. CONCLUSION: In matched groups of participants, we found evidence for altered expressions in schizophrenia but equal subjective experience. Both affective flattening and inappropriate affect comprise abnormal facial expressions but may differ with respect to interpersonal communication and engagement. Future directions may include automated measurement, remediation of expressions and early detection of schizophrenia.


Asunto(s)
Emociones , Cara/fisiología , Expresión Facial , Esquizofrenia/diagnóstico , Psicología del Esquizofrénico , Adulto , Afecto , Síntomas Afectivos/diagnóstico , Síntomas Afectivos/fisiopatología , Atención Ambulatoria , Grupos Control , Emociones/fisiología , Músculos Faciales/fisiología , Miedo , Femenino , Felicidad , Humanos , Masculino , Narración , Escalas de Valoración Psiquiátrica , Factores de Riesgo , Esquizofrenia/fisiopatología , Conducta Verbal/fisiología , Grabación de Cinta de Video
20.
Schizophr Res ; 105(1-3): 49-60, 2008 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-18789845

RESUMEN

OBJECTIVE: Impaired facial expressions of emotions have been described as characteristic symptoms of schizophrenia. Differences regarding individual facial muscle changes associated with specific emotions in posed and evoked expressions remain unclear. This study examined static facial expressions of emotions for evidence of flattened and inappropriate affect in persons with stable schizophrenia. METHODS: 12 persons with stable schizophrenia and matched healthy controls underwent a standardized procedure for posed and evoked facial expressions of five universal emotions, including happy, sad, anger, fear, and disgust expressions, at three intensity levels. Subjects completed self-ratings of their emotion experience. Certified raters coded images of facial expressions for presence of action units (AUs) according to the Facial Action Coding System. Logistic regression analyses were used to examine differences in the presence of AUs and emotion experience ratings by diagnosis, condition and intensity of expression. RESULTS: Patient and control groups experienced similar intensities of emotions, however, the difference between posed and evoked emotions was less pronounced in patients. Differences in expression of frequent and infrequent AUs support clinical observations of flattened and inappropriate affect in schizophrenia. Specific differences involve the Duchenne smile for happy expressions and decreased furrowed brows in all negative emotion expressions in schizophrenia. CONCLUSION: While patterns of facial expressions were similar between groups, general and emotion specific differences support the concept of impaired facial expressions in schizophrenia. Expression of emotions in schizophrenia could not be explained by impaired experience. Future directions may include automated measurement, remediation of expressions and early detection of schizophrenia.


Asunto(s)
Trastornos del Conocimiento/diagnóstico , Emociones/fisiología , Expresión Facial , Esquizofrenia/diagnóstico , Psicología del Esquizofrénico , Adulto , Síntomas Afectivos/diagnóstico , Síntomas Afectivos/fisiopatología , Trastornos del Conocimiento/fisiopatología , Grupos Control , Cara/fisiología , Músculos Faciales/fisiología , Femenino , Humanos , Masculino , Comunicación no Verbal/fisiología , Escalas de Valoración Psiquiátrica , Factores de Riesgo , Esquizofrenia/fisiopatología , Conducta Verbal
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