Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 42
Filtrar
1.
GMS J Med Educ ; 41(2): Doc18, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38779695

RESUMEN

Objectives: Physicians and psychologists at psychiatric university hospitals are assigned teaching tasks from the first day of work without necessarily having the prerequisite training in teaching methods. This exploratory survey provides a needs-based analysis for the prospective didactic training of physicians and psychologists at psychiatric hospitals in Germany, Austria and Switzerland. Methods: An online questionnaire was distributed at medical schools via email in German-speaking countries in Europe. All physicians involved in teaching medical students at psychiatry faculties were eligible to participate in the survey. Participants were further requested to recruit eligible participants (snowball sampling). Responses were analyzed descriptively, and differences between groups were calculated using nonparametric Mann-Whitney U tests (p<.05). Results: Overall, 97 respondents (male=55, female=42; mean age= 40.6) from 19 medical schools completed the survey. The respondents consisted of 43 residents, 39 specialists, 6 chief physicians and 9 psychologists. Of the respondents, 97.6% rated didactic competence as either highly relevant or rather relevant for teaching medical students. The highest overall interest was shown for bedside teaching (mode=4; IQR: 2-4) and error culture (mode=3; IQR: 2-4). Respondents expressed the highest training needs for topics regarding presentation and communication (mode=3; IQR: 2-3). Resident physicians were significantly more interested in bedside teaching (U=362.0, p=0.004) and roleplay (U=425.0; p=0.036) than specialist physicians, who were more interested in examination didactics (U=415.0; p=0.022). Chief physicians displayed significantly deeper interest in group dynamics (U=51; p=0.023) than specialist physicians. In-person training was preferred by a majority of respondents, and 27.4% preferred online/web-based training. Conclusions: The majority of physicians and psychologists at psychiatric university hospitals considered professional development for faculty to be helpful for teaching medical students. Bedside teaching and error culture management were the most desired teaching topics for training medical teachers. Tailored educational interventions are recommended, with target-oriented priorities for different hierarchical levels.


Asunto(s)
Docentes Médicos , Evaluación de Necesidades , Psiquiatría , Humanos , Femenino , Masculino , Psiquiatría/educación , Encuestas y Cuestionarios , Adulto , Docentes Médicos/psicología , Alemania , Austria , Suiza , Estudios Prospectivos , Enseñanza , Curriculum , Persona de Mediana Edad
2.
Psychiatry Res ; 326: 115283, 2023 08.
Artículo en Inglés | MEDLINE | ID: mdl-37285622

RESUMEN

Brain-derived neurotrophic factor (BDNF) is a pleiotropic cytokine implicated in the pathogenesis of major depressive disorder (MDD). In MDD, serum BDNF levels are attenuated. Healthy adults show BDNF elevation after exercise. To investigate activity-dependent BDNF elevation in MDD, thirty-seven participants with partially remitted MDD were allocated to either a bout of strenuous or light activity. Serum was collected before and after the intervention. BDNF was measured using a highly sensitive and specific enzyme-linked immunosorbent assay. Significant BDNF elevation in the strenuous activity group emerged. This study confirms exercise-dependent serum BDNF elevation in MDD. Preregistration: German Clinical Trials Register (DRKS0001515).


Asunto(s)
Trastorno Depresivo Mayor , Adulto , Humanos , Factor Neurotrófico Derivado del Encéfalo , Depresión , Ejercicio Físico , Terapia por Ejercicio
4.
Front Psychiatry ; 11: 555052, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-33192669

RESUMEN

Computer-assisted cognitive remediation (CACR) is an economical, adjustable, and effective treatment for individuals with schizophrenia. The current randomized controlled study examined whether an individualized or generic exercise plan in CACR is superior in patients with multiple cognitive deficits compared to treatment-as-usual (TAU). Fifty-nine inpatients diagnosed with schizophrenia were randomly assigned to 1) TAU, 2) TAU plus an individualized exercise plan in CACR, or 3) TAU plus a generic exercise plan in CACR. Neuropsychological performance, psychopathology, and functional outcome were assessed at baseline and post-treatment. The results show a medium to large training effect for all neuropsychological performance measures. Contrary to our expectations the neuropsychological improvement over time did not differ between groups. Self-reported depression, global level of functioning, and activity and participation functioning showed a significant improvement from baseline to post-treatment. However no further group, time, or interaction effects for other psychopathology and functional outcome could be demonstrated. Possible implications for clinical use of CACR and future studies are discussed.

5.
J Affect Disord ; 276: 316-326, 2020 11 01.
Artículo en Inglés | MEDLINE | ID: mdl-32871662

RESUMEN

BACKGROUND: There is an urgent need for the development and evaluation of targeted interventions for cognitive impairment (CI) in patients with (partially) remitted major depressive disorder (MDD). The aim of our study was therefore to evaluate the effect of cognitive remediation therapy (CRT) on cognitive and psychosocial functioning in a sample of patients with MDD, taking into account comorbidity, psychopathology, remission status and CI profile. Furthermore, we compared a generalized training (GT) with an individualized training (IT) approach regarding their effects on cognition. METHODS: Sixty-two MDD patients in partial remission with CI were randomly assigned to a control group (CG), IT or GT. Participants of GT trained six cognitive subdomains (divided attention, selective attention, alertness, working memory, planning and response inhibition), whereas participants of IT trained their three most deficient cognitive subdomains as identified at baseline. Participants of both intervention groups trained three times per week over a five-week period. Both training groups received additional 30-minute compensatory-transfer sessions once per week. RESULTS: Attention appeared to be the most frequently impaired cognitive domain as well as the domain which was significantly improved by CRT, with medium to large effect sizes. No difference in improvement was found between IT and GT. The analyses also revealed greater improvement in self-assessed psychosocial functioning in training participants (GT and IT combined) compared to the CG. LIMITATIONS: Due to the small sample size, the present results are preliminary in nature. CONCLUSION: CRT was well accepted, and patients transferred the attentional improvement to real life, as measured by self-assessed psychosocial functioning. IT yielded no additional advantages over GT. We propose CRT as an integral part of the treatment plan for patients with depression suffering from CI.


Asunto(s)
Terapia Cognitivo-Conductual , Remediación Cognitiva , Trastorno Depresivo Mayor , Cognición , Trastorno Depresivo Mayor/terapia , Humanos , Método Simple Ciego
6.
Cerebellum ; 19(6): 762-770, 2020 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-32642931

RESUMEN

Cerebellar involvement in major depressive disorder (MDD) has been demonstrated by a growing number of studies, but it is unknown whether cognitive functioning in depressed individuals is related to cerebellar gray matter volume (GMV) abnormalities. Impaired attention and executive dysfunction are characteristic cognitive deficits in MDD, and critically, they often persist despite remission of mood symptoms. In this study, we investigated cerebellar GMV in patients with remitted MDD (rMDD) that showed persistent cognitive impairment. We applied cerebellum-optimized voxel-based morphometry in 37 patients with rMDD and with cognitive deficits, in 12 patients with rMDD and without cognitive deficits, and in 36 healthy controls (HC). Compared with HC, rMDD patients with cognitive deficits had lower GMV in left area VIIA, crus II, and in vermal area VIIB. In patients with rMDD, regression analyses demonstrated significant associations between GMV reductions in both regions and impaired attention and executive dysfunction. Compared with HC, patients without cognitive deficits showed increased GMV in bilateral area VIIIB. This study supports cerebellar contributions to the cognitive dimension of MDD. The data also point towards cerebellar area VII as a potential target for non-invasive brain stimulation to treat cognitive deficits related to MDD.


Asunto(s)
Cerebelo/diagnóstico por imagen , Disfunción Cognitiva/diagnóstico por imagen , Disfunción Cognitiva/epidemiología , Trastorno Depresivo Mayor/diagnóstico por imagen , Trastorno Depresivo Mayor/epidemiología , Adulto , Terapia Cognitivo-Conductual/métodos , Disfunción Cognitiva/terapia , Trastorno Depresivo Mayor/terapia , Femenino , Humanos , Imagen por Resonancia Magnética/métodos , Masculino , Persona de Mediana Edad , Tamaño de los Órganos
7.
PLoS One ; 15(5): e0233682, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32470064

RESUMEN

BACKGROUND: Communication is a core competence in medical care. Failure of physicians to properly communicate inherent risks of medical interventions has been linked with inadequate training at school. This study analyses a medical curriculum for assessing the content and quality of teaching risk communication to students. METHODS: A checklist based on the national guidelines of core competencies on risk communication required of physicians was developed. Participant observers surveyed all teaching sessions at a medical school during a semester to record the frequency, characteristics and clinical context used by lectures during classes. Data were analyzed using statistical and descriptive methods to determine the prevalence and quality of teaching content. RESULTS: 231 teaching sessions were surveyed. The inter-rater reliability was 81%. Lecturers mentioned topics of risk communication in 61.5% of teaching sessions (83.7% in surgery, 43.3% in internal medicine) but core biostatistics concepts were not discussed in more than 80% of these sessions. Important topics such as patient safety and preventable diseases were underrepresented. Risk communication was mainly taught in large-group, theoretical sessions and rarely with supplementary teaching material (7.4%). Students asked questions in 15.2% of courses, more often in surgery classes than in internal medicine. CONCLUSION: Statistical and clinical topics relevant for teaching risk communication to medical students are not only underrepresented but also minimally explained by lecturers. Supplementary material on risk communication is rarely provided to students during classes. High-resource demanding, small-group teaching formats are not necessarily interactive as students ask few questions.


Asunto(s)
Educación Médica , Relaciones Médico-Paciente , Comunicación , Curriculum , Educación Médica/métodos , Humanos , Medición de Riesgo , Estudiantes de Medicina
8.
Med Educ Online ; 25(1): 1746014, 2020 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-32249706

RESUMEN

Aims: Teaching students about risk communication is an important aspect at medical schools given the growing importance of informed consent in healthcare. This observational study analyzes the quality of teaching content on risk communication and biostatistics at a medical school.Methods: Based on the concept of curriculum mapping, purpose-designed questionnaires were used via participant observers to record the frequency, characteristics and context of risk communication employed by lecturers during teaching sessions for one semester. The data was analyzed quantitatively and descriptively.Results: Teaching about risk communication was observed in 24.4% (n = 95 of 390) sessions. Prevalence varied significantly among different departments with dermatology having the highest rate (67.9%) but lesser in-depth teaching than medical psychology where risk communication concepts were discussed on a higher scale in 61.4% sessions. Relevant statistical values were not mentioned at all in 69% of these 95 sessions and clinical contexts were used rarely (55.8%). Supplementary teaching material was provided in 50.5% sessions while students asked questions in 18.9% sessions.Conclusions: Students are infrequently taught about communicating risks. When they are, the teaching does not include the mention of core biostatistics values nor does the teaching involve methods for demonstrating risk communication.


Asunto(s)
Comunicación , Educación Médica/organización & administración , Medición de Riesgo , Bioestadística/métodos , Curriculum , Humanos , Masculino , Medicina , Psicología/educación , Estudiantes de Medicina/psicología , Encuestas y Cuestionarios , Enseñanza , Adulto Joven
9.
Psychol Med ; 50(14): 2335-2345, 2020 10.
Artículo en Inglés | MEDLINE | ID: mdl-31524112

RESUMEN

BACKGROUND: Cognitive impairment is a core feature of major depressive disorder (MDD). Cognitive remediation may improve cognition in MDD, yet so far, the underlying neural mechanisms are unclear. This study investigated changes in intrinsic neural activity in MDD after a cognitive remediation trial. METHODS: In a longitudinal design, 20 patients with MDD and pronounced cognitive deficits and 18 healthy controls (HC) were examined using resting-state functional magnetic resonance imaging. MDD patients received structured cognitive remediation therapy (CRT) over 5 weeks. The whole-brain fractional amplitude of low-frequency fluctuations was computed before the first and after the last training session. Univariate methods were used to address regionally-specific effects, and a multivariate data analysis strategy was employed to investigate functional network strength (FNS). RESULTS: MDD patients significantly improved in cognitive function after CRT. Baseline comparisons revealed increased right caudate activity and reduced activity in the left frontal cortex, parietal lobule, insula, and precuneus in MDD compared to HC. In patients, reduced FNS was found in a bilateral prefrontal system at baseline (p < 0.05, uncorrected). In MDD, intrinsic neural activity increased in right inferior frontal gyrus after CRT (p < 0.05, small volume corrected). Left inferior parietal lobule, left insula, left precuneus, and right caudate activity showed associations with cognitive improvement (p < 0.05, uncorrected). Prefrontal network strength increased in patients after CRT, but this increase was not associated with improved cognitive performance. CONCLUSIONS: Our findings support the role of intrinsic neural activity of the prefrontal cortex as a possible mediator of cognitive improvement following CRT in MDD.


Asunto(s)
Cognición/fisiología , Remediación Cognitiva , Trastorno Depresivo Mayor/fisiopatología , Trastorno Depresivo Mayor/terapia , Corteza Prefrontal/fisiopatología , Adulto , Mapeo Encefálico/métodos , Estudios de Casos y Controles , Femenino , Humanos , Imagen por Resonancia Magnética/métodos , Masculino , Persona de Mediana Edad , Descanso
10.
J Affect Disord ; 264: 40-49, 2020 03 01.
Artículo en Inglés | MEDLINE | ID: mdl-31846901

RESUMEN

BACKGROUND: There is urgent need for development and evaluation of targeted interventions for cognitive deficits in (partially) remitted major depression. Until now the analyses of the moderators of treatment efficacy were only examined in mixed samples of patients with schizophrenia, affective spectrum and schizoaffective disorders. Thus, the aim of our study was to evaluate the predictors of cognitive remediation therapy (CRT) improvement in a sample of (partially) remitted major depressive disorder patients. METHODS: Reliable Change Index with corrections for practice effects was calculated for each participant as an indicator for training improvement. Thirty eight patients, who were randomized within our previously conducted CRT clinical trial, were divided into "Improvers" and "Nonimprovers" in the attention domain, to compare them on sociodemographic, psychopathological, neurocognitive, psychosocial and training factors. RESULTS: We detected 13 training participants who improved reliably in the attention domain. Illness duration was the only factor which significantly differentiated between Improvers and Nonimprovers. No significant differences between Improvers and Nonimprovers in terms of other clinical variables, sociodemographic and neuropsychological factors were found. LIMITATIONS: Exploratory research results should be taken with caution. Focus on the attention domain could have led to a limited point of view. CONCLUSION: Our findings represent a first analysis of the predictors of cognitive remediation training improvement in (partially) remitted unipolar depression. Much more work should be done to refine cognitive treatment approaches. An initiation of cognitive training in early stages of the disease could be beneficial for the affected patients.


Asunto(s)
Trastornos del Conocimiento , Remediación Cognitiva , Trastorno Depresivo Mayor , Trastornos Psicóticos , Esquizofrenia , Trastorno Depresivo Mayor/terapia , Humanos , Pruebas Neuropsicológicas
11.
Patient Educ Couns ; 102(7): 1304-1312, 2019 07.
Artículo en Inglés | MEDLINE | ID: mdl-30852116

RESUMEN

OBJECTIVE: Skilful communication by doctors is necessary for healthcare delivery during emotionally challenging situations. This study analyses a medical curriculum for the frequency and intensity of teaching content on communication in emotionally challenging situations. METHODS: A questionnaire with 31 questions ("EmotCog31") was used to evaluate teaching sessions at 17 departments of a medical school for one semester. RESULTS: Teaching content on communication in emotionally challenging situations was observed in 62 of 724 (∼nine percent) teaching sessions. Fifty-six percent of these sessions were within psychosocial specialisations. Lecturers used mental diseases as teaching topics four times more than somatic diseases. Forty-two percent of the 62 sessions were large-group while fifty-eight percent were small-group, interactive sessions. Clinical examples were used in sixty-nine percent of these sessions. Eighty-one percent of the handouts provided and sixty-six percent of simulated patient scenarios used were rated as helpful. Two-thirds of teaching sessions were rated positively when they included practical context. CONCLUSION: There was a considerable lack of teaching on communication skills in an emotional context. Teaching was limited to psychosocial specialties, reducing the impact of available knowledge for other medical specialties. PRACTICE IMPLICATIONS: More interactive, practically oriented teaching methods are useful for teaching emotional communication skills.


Asunto(s)
Comunicación , Curriculum , Educación de Pregrado en Medicina , Emociones , Trastornos Mentales/diagnóstico , Relaciones Médico-Paciente , Adulto , Estudios Transversales , Femenino , Humanos , Masculino , Encuestas y Cuestionarios
12.
Psychiatry Res ; 271: 343-350, 2019 01.
Artículo en Inglés | MEDLINE | ID: mdl-30529317

RESUMEN

Cognitive impairment in Major Depressive Disorder (MDD) has been postulated to persist into remission. However, inconsistent definitions of clinical remission, patterns and influencing factors, isolated cognitive tasks, and the lack of appropriately matched controls (HCs) present significant limitations of previous studies. Furthermore, studies investigating cognition in partially remitted patients are particularly scarce. This study compares the cognition of MDD patients (N = 65) and HCs (N = 65), matched by one-to-one recruitment strategy for age, sex, and education (ages 19-60). The neuropsychological (NPS) performance was measured via an extensive NPS-test battery and analysed retrospectively, accounting for demographic and clinical variables. Full remission was defined as HAMD cut off ≤7, partial remission as HAMD 8-18. The findings show entire MDD group and partially remitted MDD with significantly poorer NPS performance compared to HCs, while remitted MDD patients did not differ significantly from HCs. This underscores how critical a clear definition of remission is to compare studies on MDD. The clinical variable 'number of hospitalizations' had a significant effect on cognition, whereas current symptom severity did not correlate with performance on any cognitive domain. Higher number of hospitalizations may be associated with higher burden of illness and greater neurobiological "scar effects".


Asunto(s)
Disfunción Cognitiva/fisiopatología , Trastorno Depresivo Mayor/fisiopatología , Trastorno Depresivo Mayor/terapia , Hospitalización/estadística & datos numéricos , Evaluación de Resultado en la Atención de Salud/normas , Índice de Severidad de la Enfermedad , Adulto , Disfunción Cognitiva/etiología , Trastorno Depresivo Mayor/complicaciones , Femenino , Humanos , Masculino , Persona de Mediana Edad , Inducción de Remisión , Estudios Retrospectivos , Adulto Joven
13.
Psychopathology ; 51(5): 295-305, 2018.
Artículo en Inglés | MEDLINE | ID: mdl-30184551

RESUMEN

Major Depressive Disorder (MDD) is one of the most common psychiatric disorders, with a large global impact on both the individual and the society. In this narrative review, we summarize neurocognitive deficits during acute and (partially) remitted states of depression. Furthermore, we outline the potential negative effect of cognitive impairment (CI) on functional recovery, and discuss the role of several variables in the development of CI for MDD patients. Though there is cumulating evidence regarding persistent CI in unipolar depression, research on treatment options specific for this patient group is still scarce. Hence the central aim of our review is to present non-pharmacological interventions, which are thought to reduce CI in affected MDD patients. We discuss cognitive remediation therapy (CRT), physical exercise, yoga, mindfulness-based therapy, and modern neuromodulation approaches like neurostimulation and neurofeedback training. In conclusion, we propose future directions for research on CI in depression. Looking further ahead, we suggest creative interventional designs that include a direct comparison of different non-pharmacological treatment approaches on neurocognition and functional outcome of MDD. Furthermore, additive and synergistic effects of CRT with other treatment approaches should be examined and compared to create multimodal and even personalized intervention programs.


Asunto(s)
Disfunción Cognitiva/psicología , Depresión/psicología , Atención Plena/métodos , Adulto , Disfunción Cognitiva/terapia , Femenino , Humanos , Masculino , Persona de Mediana Edad
15.
Psychoneuroendocrinology ; 91: 198-205, 2018 05.
Artículo en Inglés | MEDLINE | ID: mdl-29587243

RESUMEN

BACKGROUND: Major depressive disorder (MDD) is associated with cognitive impairment, that might be related to disturbed calcium homeostasis. Calcium-related processes have also been implicated in age related cognitive decline. Since serum calcium and brain interstitial fluids maintain long-term equilibrium under normal physiological states, serum calcium levels could affect neuronal and hence cognitive function. High serum calcium has been associated with cognitive decline in geriatric populations, whereas evidence for MDD and healthy populations is less consistent. METHODS: Differences in neuropsychological (NPS) performance and their relationship with serum calcium (total, ionized, total to ionized ratio) in (partially) remitted MDD patients (n = 59) and healthy controls (HC) (n = 59) individually matched for age, gender and education (age-range 19-60 years) were examined. Modulation of study parameters and their interaction by the factor age was investigated, with subgroups young and old divided at median = 37 years. Participants provided blood samples and completed an extensive NPS test battery. RESULTS: MDD showed significantly poorer NPS performance compared to HC. Serum calcium associated positively with NPS performance in HC and negatively in MDD for entire age-range samples. While younger MDD and HC showed positive NPS-calcium correlations, older MDD and HC exhibited negative NPS-calcium correlations ('correlation reversal'). Age had a significant effect on cognition and ionized calcium and interacted with illness-status, with an exaggerated influence on cognition in MDD compared to HC. CONCLUSIONS: The results place calcium 'correlation reversal' to early middle-age time window, which may be accelerated for MDD and highlight the central role of calcium pathways in normal and pathological cognitive aging.


Asunto(s)
Calcio/análisis , Envejecimiento Cognitivo/fisiología , Trastorno Depresivo Mayor/metabolismo , Adulto , Envejecimiento/metabolismo , Biomarcadores/sangre , Encéfalo/metabolismo , Calcio/sangre , Cognición/fisiología , Envejecimiento Cognitivo/psicología , Disfunción Cognitiva/complicaciones , Depresión/metabolismo , Trastorno Depresivo Mayor/sangre , Femenino , Humanos , Masculino , Persona de Mediana Edad , Pruebas Neuropsicológicas
16.
Schizophr Res ; 193: 77-82, 2018 03.
Artículo en Inglés | MEDLINE | ID: mdl-28732799

RESUMEN

BACKGROUND: Aberrant attributional styles are counted to a set of circumscribed cognitive biases that are implicated in the pathogenesis of (paranoid) psychosis. However, evidence for a specific profile (e.g., an exaggerated self-serving bias, other-blaming bias) has become equivocal over the years. More recently, one-sided (monocausal) attributions have been reported in patients with psychosis. METHODS: We compared a large sample of patients with diagnosed schizophrenia (n=145) to nonclinical controls (n=30) on a revised version of the Internal, Personal and Situational Attributions Questionnaire (IPSAQ-R). In this task, participants have to assign probability estimates to each of three potential causes (i.e., myself, others, circumstances) for a specific (negative or positive) event. RESULTS: Participants with schizophrenia displayed an abolished self-serving bias and showed a significant preference for one-sided/monocausal attributions, which was neither correlated with jumping to conclusions nor overconfidence in errors. School education correlated with less monocausal attributions. We did not find any congruence between attributional styles with core delusional ideas. CONCLUSIONS: Our study corroborates earlier investigations showing that monocausal attributions may play a role in the pathogenesis of psychosis; this bias unlikely represents an epiphenomenon of established biases. Unexpectedly, attributional styles (e.g., external-blaming) did not shape delusional contents. The true prevalence of monocausal attributions in psychosis is perhaps underestimated in the study, as groups were equated on school education, which was correlated with monocausal attributions.


Asunto(s)
Sesgo , Trastornos del Conocimiento/etiología , Deluciones/etiología , Trastornos Paranoides/etiología , Esquizofrenia/complicaciones , Psicología del Esquizofrénico , Adolescente , Adulto , Anciano , Deluciones/diagnóstico , Femenino , Desamparo Adquirido , Humanos , Masculino , Persona de Mediana Edad , Trastornos Paranoides/diagnóstico , Determinación de la Personalidad , Encuestas y Cuestionarios , Adulto Joven
17.
Psychiatry Res ; 252: 80-86, 2017 06.
Artículo en Inglés | MEDLINE | ID: mdl-28259035

RESUMEN

Cognitive dysfunction is a core feature of schizophrenia spectrum and depressive disorders. Influx of extracellular calcium is essential for neuronal processes such as pre-synaptic neurotransmitter release and NMDA receptor mediated neuroplasticity. Since serum and brain interstitial fluids maintain equilibrium for ion concentrations via passive diffusion, the amount of peripheral calcium could affect neuronal and hence cognitive function. Within the physiological norm-levels, we hypothesized higher serum-calcium would be associated with better neuropsychological performance in patients diagnosed with schizophrenia or depression. One-tailed Pearson's correlations were calculated between total serum-calcium levels and performance on an extensive computer-based neuropsychological test battery. Influence of covariates was assessed using linear regression. Serum calcium was significantly and positively correlated with neuropsychological composite, information processing speed, executive function and global assessment of functioning (GAF) in depression patients but not in schizophrenia patients. Amongst covariates, age associated significantly with serum calcium and neuropsychological functioning in depression but only with serum calcium in schizophrenia group. The study provides first evidence for a positive relationship between serum calcium and neuropsychological/daily-life function in depression. Absence of this correlation in schizophrenia could point to etiological heterogeneity concerning calcium-related processes underlying cognitive deficits in these disorders.


Asunto(s)
Calcio/sangre , Disfunción Cognitiva/psicología , Depresión/sangre , Esquizofrenia/sangre , Psicología del Esquizofrénico , Adulto , Cognición , Depresión/psicología , Trastorno Depresivo/sangre , Función Ejecutiva , Femenino , Humanos , Masculino , Persona de Mediana Edad , Pruebas Neuropsicológicas
19.
Schizophr Res Treatment ; 2016: 8213165, 2016.
Artículo en Inglés | MEDLINE | ID: mdl-27144021

RESUMEN

Many patients with schizophrenia show cognitive impairment. There is evidence that, beyond a certain dose of antipsychotic medication, the antipsychotic daily dose (ADD) may impair cognitive performance. Parallel to their D2 receptor antagonism, many antipsychotics show a significant binding affinity to cholinergic muscarinic receptors. Pharmacological treatment with a high anticholinergic daily dose (CDD) significantly impairs attention and memory performance. To examine the relationships between individual cognitive performance and ADD and/or CDD, we conducted a retrospective record-based analysis of a sample of n = 104 in patients with a diagnosis of schizophrenia, all of whom had completed a comprehensive neuropsychological test battery. To calculate the individual ADD and CDD, the medication at the time of testing was converted according to equivalence models. After extracting five principal cognitive components, we examined the impact of ADD and CDD on cognitive performance in the medicated sample and subgroups using multiple regression analysis. Finally, locally weighted scatterplot smoothing (Loess) was applied to further explore the course of cognitive performance under increasing dosage. Results showed significant negative effects of ADD on performance in tests of information processing speed and verbal memory. No effects were found for CDD. The potential neuropsychopharmacological and clinical implications are discussed.

20.
Cogn Neuropsychiatry ; 21(2): 91-106, 2016.
Artículo en Inglés | MEDLINE | ID: mdl-26884221

RESUMEN

INTRODUCTION: A liberal acceptance (LA) threshold for hypotheses has been put forward to explain the well-replicated "jumping to conclusions" (JTC) bias in psychosis, particularly in patients with paranoid symptoms. According to this account, schizophrenia patients rest their decisions on lower subjective probability estimates. The initial formulation of the LA account also predicts an absence of the JTC bias under high task ambiguity (i.e., if more than one response option surpasses the subjective acceptance threshold). METHODS: Schizophrenia patients (n = 62) with current or former delusions and healthy controls (n = 30) were compared on six scenarios of a variant of the beads task paradigm. Decision-making was assessed under low and high task ambiguity. Along with decision judgments (optional), participants were required to provide probability estimates for each option in order to determine decision thresholds (i.e., the probability the individual deems sufficient for a decision). RESULTS: In line with the LA account, schizophrenia patients showed a lowered decision threshold compared to controls (82% vs. 93%) which predicted both more errors and less draws to decisions. Group differences on thresholds were comparable across conditions. At the same time, patients did not show hasty decision-making, reflecting overall lowered probability estimates in patients. CONCLUSIONS: Results confirm core predictions derived from the LA account. Our results may (partly) explain why hasty decision-making is sometimes aggravated and sometimes abolished in psychosis. The proneness to make risky decisions may contribute to the pathogenesis of psychosis. A revised LA account is put forward.


Asunto(s)
Toma de Decisiones , Deluciones/psicología , Trastornos Psicóticos/psicología , Esquizofrenia Paranoide/psicología , Esquizofrenia , Psicología del Esquizofrénico , Adulto , Estudios de Casos y Controles , Femenino , Humanos , Juicio , Masculino , Persona de Mediana Edad , Probabilidad , Riesgo , Pensamiento , Adulto Joven
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA
...