Abstract：
:Schizophrenia is a heterogeneous spectrum disorder often associated with detrimental negative symptoms. In recent years, computational approaches to psychiatry have attracted growing attention. Negative symptoms have shown some overlap with general cognitive impairments and were also linked to impaired motivational processing in brain circuits implementing reward prediction. In this review, we outline how computational approaches may help to provide a better understanding of negative symptoms in terms of the potentially underlying behavioural and biological mechanisms. First, we describe the idea that negative symptoms could arise from a failure to represent reward expectations to enable flexible behavioural adaptation. It has been proposed that these impairments arise from a failure to use prediction errors to update expectations. Important previous studies focused on processing of so-called model-free prediction errors where learning is determined by past rewards only. However, learning and decision-making arise from multiple cognitive mechanisms functioning simultaneously, and dissecting them via well-designed tasks in conjunction with computational modelling is a promising avenue. Second, we move on to a proof-of-concept example on how generative models of functional imaging data from a cognitive task enable the identification of subgroups of patients mapping on different levels of negative symptoms. Combining the latter approach with behavioural studies regarding learning and decision-making may allow the identification of key behavioural and biological parameters distinctive for different dimensions of negative symptoms versus a general cognitive impairment. We conclude with an outlook on how this computational framework could, at some point, enrich future clinical studies.
journal_name
Schizophr Resjournal_title
Schizophrenia researchauthors
Deserno L,Heinz A,Schlagenhauf Fdoi
10.1016/j.schres.2016.10.004subject
Has Abstractpub_date
2017-08-01 00:00:00pages
46-54eissn
0920-9964issn
1573-2509pii
S0920-9964(16)30448-0journal_volume
186pub_type
杂志文章,评审abstract：BACKGROUND:Disorganisation of semantic memory could provide a cognitive explanation for the disturbances of thinking and reasoning in schizophrenia. In this study, we directly test this explanation by identifying patients with disorganised semantic categories and then examine how they use their knowledge about these sa...
journal_title：Schizophrenia research
pub_type： 临床试验,杂志文章
doi：10.1016/j.schres.2003.12.003
更新日期：2004-10-01 00:00:00
abstract：:Attention Deficit/Hyperactivity Disorder (ADHD) is the most common psychiatric disorder in childhood. It is unclear whether ADHD increases the risk of non-affective psychotic disorder (NAPD). The study included a matched cohort, drawn from all born in Sweden 1987-1991 (n = 548,852). ADHD was defined as ICD diagnosis a...
journal_title：Schizophrenia research
pub_type： 杂志文章
doi：10.1016/j.schres.2020.01.021
更新日期：2020-04-01 00:00:00
abstract：:The performance of chronic schizophrenic probands (n=21), their first-degree schizotypal (22) and non-schizotypal (19) relatives, and normal controls (24), was measured in two associative learning paradigms, latent inhibition and the Kamin blocking effect. These paradigms assess the effects on learning of initial expo...
journal_title：Schizophrenia research
pub_type： 杂志文章
doi：10.1016/s0920-9964(00)00141-9
更新日期：2001-03-30 00:00:00
abstract：:Recent studies of cerebral pathology in patients with schizophrenia have focused on symptomatological and electrophysiological correlates of reduced temporal lobe structure volumes. Volume deficits of the left superior temporal gyrus have been correlated with auditory hallucinations as well as to left-sided P300 ampli...
journal_title：Schizophrenia research
pub_type： 杂志文章
doi：10.1016/s0920-9964(99)00006-7
更新日期：1999-08-17 00:00:00
abstract：:Left or mixed-handedness, footedness, and eye dominance are thought to indicate abnormalities in lateralization related to schizophrenia. Increased left or mixed-dominance in schizophrenia suggests possible hemispheric abnormalities associated with the disorder. A related body of research suggests that some indication...
journal_title：Schizophrenia research
pub_type： 杂志文章
doi：10.1016/j.schres.2004.04.003
更新日期：2005-01-01 00:00:00
abstract：:Dopamine's proposed role in psychosis proved a starting point in our understanding of the neurobiology of relapse, fitting given the central role positive symptoms play. This link is reflected in early work examining neurotransmitter metabolite and drug (e.g. amphetamine, methylphenidate) challenge studies as a means ...
journal_title：Schizophrenia research
pub_type： 杂志文章,评审
doi：10.1016/j.schres.2013.10.009
更新日期：2014-02-01 00:00:00
abstract：BACKGROUND:Neurodevelopmental models of schizophrenia suggest that cognitive deficits may be observed during childhood and adolescence, long before the onset of psychotic symptoms. Elucidating the trajectory of normal cognitive development during childhood and adolescence may therefore provide a basis for identifying s...
journal_title：Schizophrenia research
pub_type： 杂志文章
doi：10.1016/j.schres.2013.11.023
更新日期：2014-01-01 00:00:00
abstract：BACKGROUND:People from culturally and linguistically diverse (CALD) backgrounds are over-represented in compulsory admissions to hospital but little is known about whether this also applies to community treatment orders (CTOs). AIMS:We investigated any differences between Australian- and foreign-born patients in the l...
journal_title：Schizophrenia research
pub_type： 杂志文章
doi：10.1016/j.schres.2017.12.005
更新日期：2018-07-01 00:00:00
abstract：:Up to 50-90% of persons with schizophrenia smoke cigarettes. Limited data and theories suggest persons with schizophrenia may smoke for different reasons than persons without schizophrenia, making smoking cessation interventions particularly challenging in this population. Although health consequences of smoking are w...
journal_title：Schizophrenia research
pub_type： 杂志文章
doi：10.1016/j.schres.2012.03.024
更新日期：2012-07-01 00:00:00
abstract：BACKGROUND:Previous studies have found increased prolactin concentrations in antipsychotic-naïve patients with schizophrenia. However, the roles of other hormones, and of potentially confounding variables such as gender and smoking, have not been considered. METHODS:Blood from newly diagnosed, antipsychotic-naïve pati...
journal_title：Schizophrenia research
pub_type： 杂志文章
doi：10.1016/j.schres.2011.07.025
更新日期：2012-01-01 00:00:00
abstract：:Schizoaffective disorder is a common diagnosis in clinical practice but its nosological status has been subject to debate ever since it was conceptualized. Although it is key that diagnostic reliability is sufficient, schizoaffective disorder has been reported to have low interrater reliability. Evidence based on syst...
journal_title：Schizophrenia research
pub_type： 杂志文章,meta分析,评审
doi：10.1016/j.schres.2016.07.012
更新日期：2016-10-01 00:00:00
abstract：:Evidence validating the influence of the cytochrome P450 (CYP) 2D6 and 2C19 enzymes genetic polymorphisms in the response to antipsychotics is scarce. We examined the hypothesis that a higher prevalence of CYP2D6 and/or CYP2C19 ultra rapid metabolizers might be found among refractory schizophrenia patients. Three grou...
journal_title：Schizophrenia research
pub_type： 信件
doi：10.1016/j.schres.2015.08.002
更新日期：2015-10-01 00:00:00
abstract：:In order to investigate a possible relationship between schizophrenic births and viral diseases, the birth month and year of all state hospital admissions for schizophrenia in Connecticut and Massachusetts from 1973-1974 were compared with the occurrence of reportable viral diseases for 1920-1955. Data was statistical...
journal_title：Schizophrenia research
pub_type： 杂志文章
doi：10.1016/0920-9964(88)90043-6
更新日期：1988-01-01 00:00:00
abstract：:We found previously that a subgroup of schizophrenic patients who passed screening tests of attentional competence showed memory deficits on word memory tasks, but were comparable with controls on tone memory tasks. To better understand the nature of language-specific memory deficits in this subgroup of patients, the ...
journal_title：Schizophrenia research
pub_type： 杂志文章
doi：10.1016/s0920-9964(01)00194-3
更新日期：2002-01-15 00:00:00
abstract：:We developed and validated a self-administered questionnaire (Subjective Quality of Life Analysis, S.QUA.L.A.) to measure subjective quality of life. S.QUA.L.A. is a multidimensional instrument. This scale includes 22 domains of life. It covers traditional areas (food, family relation etc)., and more abstract aspects ...
journal_title：Schizophrenia research
pub_type： 杂志文章
doi：10.1016/j.schres.2004.09.017
更新日期：2005-07-01 00:00:00
abstract：:The effects of stereotype suppression on psychiatric stigma were investigated in two studies. In experiment 1, 52 participants were presented with a photograph of someone labeled with schizophrenia and instructed to write a passage describing a day in that person's life. Half of the participants were instructed to avo...
journal_title：Schizophrenia research
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1016/s0920-9964(01)00207-9
更新日期：2002-06-01 00:00:00
abstract：:Learning and memory impairments are present in schizophrenia (SZ) throughout the illness course and predict psychosocial function. Abnormalities in prefrontal and hippocampal function are thought to contribute to SZ deficits. The radial arm maze (RAM) is a test of spatial learning and memory in rodents that relies on ...
journal_title：Schizophrenia research
pub_type： 杂志文章
doi：10.1016/j.schres.2011.11.014
更新日期：2012-03-01 00:00:00
abstract：:The accuracy of the WAIS-R seven subtest short form (Ward, L.C., 1990. Prediction of Verbal, Performance and Full Scale IQs from seven subtests of the WAIS-R. J. Clin. Psychol. 46, 436-440) was examined for predicting IQs of 73 inpatients diagnosed with schizophrenia. Results indicated that 93% of the estimated Full S...
journal_title：Schizophrenia research
pub_type： 杂志文章
doi：10.1016/s0920-9964(99)00016-x
更新日期：1999-08-23 00:00:00
abstract：OBJECTIVE:Several risk factors of venous thromboembolism (VTE) and pulmonary embolism (PE) were found in patients with schizophrenia. Therefore, we hypothesize that the incidences of VTE and PE are relatively higher among schizophrenia patients in comparison with the general population. METHOD:For this population-base...
journal_title：Schizophrenia research
pub_type： 杂志文章
doi：10.1016/j.schres.2015.01.012
更新日期：2015-03-01 00:00:00
abstract：:53 inpatients with a DSM-III diagnosis of schizophrenia were assessed in the week prior to discharge from hospital on measures of social skills performance and on severity of positive and negative symptoms. A cluster analysis based on the total positive and negative symptom scores resulted in three groups. The group w...
journal_title：Schizophrenia research
pub_type： 杂志文章
doi：10.1016/0920-9964(89)90007-8
更新日期：1989-05-01 00:00:00
abstract：BACKGROUND:Negative symptoms in schizophrenia are associated with deficits in executive function and frequently prove highly resistant to neuroleptic medication. Using repetitive transcranial magnetic stimulation (rTMS) to activate the prefrontal cortex has been suggested as a treatment for negative symptoms. METHODS:...
journal_title：Schizophrenia research
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.schres.2007.03.016
更新日期：2007-07-01 00:00:00
abstract：:The purpose of this study was to examine the concurrent validity of a Wechsler Adult Intelligence Scale-Revised (WAIS-R) seven subtest short form. Researchers have shown that the IQ scores estimated by this short form correlate highly with full-form IQ scores in several patient populations. We compared the full WAIS-R...
journal_title：Schizophrenia research
pub_type： 杂志文章
doi：10.1016/s0920-9964(97)00134-5
更新日期：1998-03-10 00:00:00
abstract：OBJECTIVE:Self-rated attenuated psychotic-like experiences (APLEs) are increasingly used to screen for ultra-high-risk (UHR) across all ages. However, self-rated psychotic-like experiences (PLEs), in particular perception-related ones, were more frequent in children and adolescents, in which they possessed less clinica...
journal_title：Schizophrenia research
pub_type： 杂志文章,多中心研究
doi：10.1016/j.schres.2014.10.005
更新日期：2014-12-01 00:00:00
abstract：:Characterizing a pattern of cognitive dysfunction in early onset schizophrenic patients may illuminate neurodevelopmental contributions to the illness. A cohort of chronically institutionalized schizophrenic patients with a variable range of age of onset (range 7-29 years) was administered a comprehensive battery of n...
journal_title：Schizophrenia research
pub_type： 杂志文章
doi：10.1016/0920-9964(95)00065-8
更新日期：1996-05-01 00:00:00
abstract：PURPOSE:To identify the determinants of schizophrenia-specific HRQoL levels, five types of factors (i.e., sociodemographic, clinical, psychopathological, neurocognitive, and psychosocial factors) were simultaneously investigated in the same cross-sectional sample. METHODS:A total of 120 patients with a diagnosis of sc...
journal_title：Schizophrenia research
pub_type： 杂志文章
doi：10.1016/j.schres.2014.02.011
更新日期：2014-04-01 00:00:00
abstract：:Though negative symptoms in schizophrenia are associated with a host of deleterious outcomes (e.g., White et al., 2009), not all individuals with schizophrenia suffer from negative symptoms (e.g., Blanchard et al., 2005). Thus, methods to quickly screen and identify patients for more intensive clinical interview asses...
journal_title：Schizophrenia research
pub_type： 杂志文章
doi：10.1016/j.schres.2011.12.007
更新日期：2012-03-01 00:00:00
abstract：PURPOSE:Strategic and mnemonic abilities of person with schizophrenia (SCZ) were studied using a part-list cuing (PLC) task. In this task, presentation of retrieval cues in the form of a subset of studied words typically impairs recall of the remaining items. This impairment is thought to reflect a disruption of partic...
journal_title：Schizophrenia research
pub_type： 杂志文章
doi：10.1016/j.schres.2006.03.001
更新日期：2006-07-01 00:00:00
abstract：:In response to previous reports of geographical clustering of individuals with psychosis, a study was carried out in Denmark utilizing the national case register. Two-thousand one-hundred and ninety-nine (2199) individuals with schizophrenia were divided by place of birth into 217 geographical areas and analyzed by ag...
journal_title：Schizophrenia research
pub_type： 杂志文章
doi：10.1016/s0920-9964(00)00081-5
更新日期：2001-04-30 00:00:00
abstract：:Prior studies of mRNA expression, protein expression, and pathway metabolite levels have implicated dysregulation of the kynurenine pathway in the etiology of schizophrenia and bipolar disorder. Here we investigate whether genes involved in kynurenine pathway regulation might interact with genes that respond to kynure...
journal_title：Schizophrenia research
pub_type： 杂志文章
doi：10.1016/j.schres.2009.05.014
更新日期：2009-09-01 00:00:00
abstract：:Recent research conducted in high-income countries suggests psychotic experiences are common in the general population, but evidence from low- and middle-income countries (LMIC) remains limited. Sri Lanka is a LMIC affected by three decades of civil conflict and, in 2004, a devastating tsunami. This study aimed to inv...
journal_title：Schizophrenia research
pub_type： 杂志文章
doi：10.1016/j.schres.2016.01.026
更新日期：2016-03-01 00:00:00
