Abstract:
:Research has shown that obsessive compulsive disorder (OCD) is related to structural and functional abnormalities in the brain, and several authors have organized these findings into theories of OCD neuropsychiatric dysfunction. In this paper, these theories were used to develop a neural network model of OCD. OCD symptoms were hypothesized to result from a hyperactive orbitofrontal-striato-thalamic-orbitofrontal neural loop. The network was constructed and trained with a backpropagation algorithm, and it was then used to assess etiologic theories of OCD (e.g., basal ganglia dysfunction, inadequate dopaminergic inhibitory influence on basal ganglia and excessive input from the limbic system). The network was also observed in analogues of the treatment of OCD with serotonergic medications and behavior therapy. Results show that a) the network behaved both normally and abnormally, depending on what combinations of perceptual, motivational, and neurochemical inputs were presented to it; b) several etiologic mechanisms produced changes in the networks' behaviors similar to patients' subjective experiences of OCD symptoms; and c) different treatment strategies, both those modeled as pharmacologic and behavioral therapies, produced reductions in simulated OCD symptoms.
journal_name
Depress Anxietyjournal_title
Depression and anxietyauthors
Ownby RLdoi
10.1002/(sici)1520-6394(1998)8:3<91::aid-da1>3.0.csubject
Has Abstractpub_date
1998-01-01 00:00:00pages
91-103issue
3eissn
1091-4269issn
1520-6394pii
10.1002/(SICI)1520-6394(1998)8:3<91::AID-DA1>3.0.Cjournal_volume
8pub_type
杂志文章abstract::This multicenter study estimated the prevalence of major depressive disorder (MDD) among emergency department patients in Latin America. To identify patients with MDD, we used a combination of DSM IV- criteria interview and a questionnaire screen including the center for Epidemiological Studies Depression Scale. We an...
journal_title:Depression and anxiety
pub_type: 杂志文章,多中心研究
doi:10.1002/da.20380
更新日期:2008-01-01 00:00:00
abstract:BACKGROUND:Although numerous studies have examined the role of latent predispositions to internalizing and externalizing disorders in the structure of comorbidity among common mental disorders, none examined latent predispositions in predicting development of comorbidity. METHODS:A novel method was used to study the r...
journal_title:Depression and anxiety
pub_type: 杂志文章
doi:10.1002/da.20760
更新日期:2011-01-01 00:00:00
abstract:BACKGROUND:Treatment utilization/costs and work performance for persons with major depressive disorder (MDD) by severity of illness is not well documented. METHODS:Using National Comorbidity Survey-Replication (2001-2002) data, US workforce respondents (n=4,465) were classified by clinical severity (not clinically dep...
journal_title:Depression and anxiety
pub_type: 杂志文章
doi:10.1002/da.20580
更新日期:2010-01-01 00:00:00
abstract:BACKGROUND:Previous work on gene-environment (GxE) interplay concerning anxiety has focused on the interaction of 5-HTTLPR with childhood adversities or traumatic events whereas the impact of recent stressors is understudied, as is the integration of resilience. The current study aimed to investigate the interactive ef...
journal_title:Depression and anxiety
pub_type: 杂志文章
doi:10.1002/da.23101
更新日期:2020-10-14 00:00:00
abstract:BACKGROUND:To elucidate mechanisms related to remission in winter seasonal affective disorder (SAD), we explored the course of individual depressive symptom offset across two distinct treatment modalities that show comparable outcomes at treatment endpoint: cognitive-behavioral therapy for SAD (CBT-SAD) and light thera...
journal_title:Depression and anxiety
pub_type: 杂志文章,随机对照试验
doi:10.1002/da.22739
更新日期:2018-05-01 00:00:00
abstract:BACKGROUND:Many individuals with obsessive-compulsive disorder (OCD) do not receive professional treatment due to various idiosyncratic barriers. Internet-based cognitive-behavioral therapy (iCBT) is increasingly used to narrow treatment gaps, but the efficacy of such interventions without guidance of therapists has no...
journal_title:Depression and anxiety
pub_type: 杂志文章,随机对照试验
doi:10.1002/da.23105
更新日期:2020-12-01 00:00:00
abstract::The purpose of this study was to correlate subjective sleep characteristics based on questionnaire response, and objective sleep EEG features based on polysomnography, in 52 patients with major depressive disorders (MDD) and 49 healthy controls. With the exception of the number of awakenings, subjective and objective ...
journal_title:Depression and anxiety
pub_type: 杂志文章
doi:10.1002/(sici)1520-6394(1997)5:2<97::aid-da6>3.0.c
更新日期:1997-01-01 00:00:00
abstract::Thus, there appears to be a large variety of approaches to refractory bipolar depression. In contrast to several decades ago, wherein augmentation of lithium with antidepressants and neuroleptics was essentially the only treatment mode available, a panoply of treatment options now exist. However, their relative effica...
journal_title:Depression and anxiety
pub_type: 杂志文章,评审
doi:
更新日期:1997-01-01 00:00:00
abstract:BACKGROUND:Recent evidence shows that screen time may be an important risk factor for mental health. The aim of this study was to examine the association of computer/mobile devices (CMD) use and TV watching separately with depressive symptoms in a large representative sample of Chinese adults. METHODS:A sample of 18,9...
journal_title:Depression and anxiety
pub_type: 杂志文章
doi:10.1002/da.22932
更新日期:2019-09-01 00:00:00
abstract:BACKGROUND:Recent studies suggest that mindfulness may be an effective component for posttraumatic stress disorder (PTSD) treatment. Mindfulness involves practice in volitional shifting of attention from "mind wandering" to present-moment attention to sensations, and cultivating acceptance. We examined potential neural...
journal_title:Depression and anxiety
pub_type: 杂志文章
doi:10.1002/da.22481
更新日期:2016-04-01 00:00:00
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journal_title:Depression and anxiety
pub_type: 杂志文章,随机对照试验
doi:10.1002/da.22132
更新日期:2013-08-01 00:00:00
abstract:BACKGROUND:Depression outcomes in research and clinical practice are commonly defined by the concepts of remission, recovery, relapse, and recurrence. Despite their widespread use, there has been little empirical examination of these concepts. Therefore, we investigated profiles of individual symptoms during each of th...
journal_title:Depression and anxiety
pub_type: 杂志文章
doi:10.1002/da.21960
更新日期:2012-07-01 00:00:00
abstract:BACKGROUND:Previous studies have indicated a high prevalence of generalized anxiety disorder (GAD) in women with anorexia nervosa (AN). However, the shared genetic and environmental components of these disorders have not been explored. This study seeks to elucidate the shared genetic and environmental components betwee...
journal_title:Depression and anxiety
pub_type: 杂志文章
doi:10.1002/da.20834
更新日期:2011-08-01 00:00:00
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journal_title:Depression and anxiety
pub_type: 杂志文章
doi:10.1002/(sici)1520-6394(1998)8:1<43::aid-da9>3.0.c
更新日期:1998-01-01 00:00:00
abstract:BACKGROUND:The impact of the May 2008 Wenchuan earthquake, measuring a massive 8.0 on the surface wave magnitude scale, on public health in China has been significant and multifaceted. In light of extant data on prevalence and risk factors for posttraumatic stress disorder (PTSD) after other natural diasters, we collec...
journal_title:Depression and anxiety
pub_type: 杂志文章
doi:10.1002/da.20612
更新日期:2009-01-01 00:00:00
abstract:BACKGROUND:Panic disorder (PD) is highly comorbid with major depressive disorder (MDD) with potential impact on patient-reported outcomes of quality of life (QOL), functioning, and depressive symptom severity. METHODS:Using data from the sequenced treatment alternatives to relieve depression (STAR*D) trial, we compare...
journal_title:Depression and anxiety
pub_type: 临床试验,杂志文章,多中心研究
doi:10.1002/da.22152
更新日期:2014-08-01 00:00:00
abstract:BACKGROUND:In this study, we examined executive control of attention in individuals with contamination-related obsessive-compulsive (OC) symptoms using a modified version of the Eriksen flanker task. The task indexes one's ability to resolve attentional conflict between different responses and to ignore task distracter...
journal_title:Depression and anxiety
pub_type: 杂志文章
doi:10.1002/da.20703
更新日期:2010-09-01 00:00:00
abstract:BACKGROUND:Despite its popularity, little is known about the measurement invariance of the Patient Health Questionnaire-9 (PHQ-9) across U.S. sociodemographic groups. Use of a screener shown not to possess measurement invariance could result in under/over-detection of depression, potentially exacerbating sociodemograph...
journal_title:Depression and anxiety
pub_type: 杂志文章
doi:10.1002/da.22940
更新日期:2019-09-01 00:00:00
abstract:BACKGROUND:Amygdala-prefrontal cortex (PFC) functional connectivity may be influenced by anxiety and development. A prior study on anxiety found age-specific dysfunction in the ventromedial PFC (vmPFC), but not amygdala, associated with threat-safety discrimination during extinction recall (Britton et al.). However, tr...
journal_title:Depression and anxiety
pub_type: 杂志文章
doi:10.1002/da.22470
更新日期:2016-10-01 00:00:00
abstract:BACKGROUND:The relationship between comorbidity and psychological distress is well documented, however the mechanism of this association is unclear. We aim to assess the extent to which the association between common chronic conditions and high scores on the Kessler Psychological Distress Scale (K10) measure of psychol...
journal_title:Depression and anxiety
pub_type: 杂志文章
doi:10.1002/da.22162
更新日期:2014-06-01 00:00:00
abstract:BACKGROUND:The clinical presentation of panic disorder (PD) is known to be highly heterogeneous, complicating research on its etiology, neurobiological pathways, and treatment. None of the attempts to identify PD subtypes have been independently reproduced, rendering the current literature inconclusive. METHODS:Using ...
journal_title:Depression and anxiety
pub_type: 杂志文章
doi:10.1002/da.22379
更新日期:2015-07-01 00:00:00
abstract::Functional impairment might amplify suicide risk in later life. A positive view of the future may reduce this risk. We tested the hypothesis that hopelessness and positive future orientation moderate the association between functional status and suicide ideation in a sample of 136 patients, 55 years of age or older, i...
journal_title:Depression and anxiety
pub_type: 杂志文章
doi:10.1002/da.20224
更新日期:2007-01-01 00:00:00
abstract:BACKGROUND:Whether psychological resilience correlates with neurocognitive performance is largely unknown. Therefore, we assessed association between neurocognitive performance and resilience in individuals with a history of childhood abuse or trauma exposure. METHODS:In this cross-sectional study of 226 highly trauma...
journal_title:Depression and anxiety
pub_type: 杂志文章
doi:10.1002/da.20675
更新日期:2010-08-01 00:00:00
abstract:BACKGROUND:Although several studies have documented a higher prevalence of psychiatric disorders in children of depressed than nondepressed parents, previous research was conducted in predominantly White, middle, or upper-middle class populations. Only limited information is available on psychiatric disorders and psych...
journal_title:Depression and anxiety
pub_type: 杂志文章
doi:10.1002/da.20522
更新日期:2009-01-01 00:00:00
abstract::Pediatric psychopharmacology is hindered by the relative lack of controlled, empirical clinical trials [Shatzberg and Nemeroff, 1998: Washington, D.C.: The American Psychiatric Press, Inc. p 301-306]. Psychiatric disorders in children and adolescents carry considerable morbidity, impede development, and carry a signif...
journal_title:Depression and anxiety
pub_type: 杂志文章,评审
doi:10.1002/1520-6394(2000)12:1+<85::AID-DA12>3.0.CO;2
更新日期:2000-01-01 00:00:00
abstract::This study examined the validity of the Assessment of Depression Inventory (ADI), a 39-item measure of depression with three embedded validity scales, using inpatient participants. The ADI Depression (Dep) and Feigning (Fg) scales were compared to the corresponding scales of a widely used multiscale instrument, the Pe...
journal_title:Depression and anxiety
pub_type: 杂志文章
doi:10.1002/da.20183
更新日期:2006-01-01 00:00:00
abstract:BACKGROUND:Increased psychophysiological reactivity is a hallmark intermediate phenotype of posttraumatic stress disorder (PTSD). Individuals with PTSD exhibit greater skin conductance (SC) responses to trauma scripts than trauma survivors without PTSD. However, trauma scripts require time for development and cannot be...
journal_title:Depression and anxiety
pub_type: 杂志文章
doi:10.1002/da.22610
更新日期:2017-06-01 00:00:00
abstract:BACKGROUND:Television (TV) viewing and computer use have been associated with higher risk of depression, but studies specifically assessing the impact of these and other types of sedentary behaviors (SBs) on the mental health of older adults are scarce and their results are inconclusive. Similarly, the association betw...
journal_title:Depression and anxiety
pub_type: 杂志文章
doi:10.1002/da.22804
更新日期:2018-09-01 00:00:00
abstract:BACKGROUND:Pathological avoidance is a transdiagnostic characteristic of anxiety disorders. Avoidance conditioning re-emerged as a translational model to examine mechanisms and treatment of avoidance. However, its validity for anxiety disorders remains unclear. METHODS:This study tested for altered avoidance in patien...
journal_title:Depression and anxiety
pub_type: 杂志文章
doi:10.1002/da.23119
更新日期:2020-12-01 00:00:00
abstract:BACKGROUND:Social anxiety disorder (SAD) is an incapacitating disorder running in families. Previous work associated social fearfulness with a failure to habituate, but the habituation response to neutral faces has, as of yet, not been investigated in patients with SAD and their family members concurrently. Here, we ex...
journal_title:Depression and anxiety
pub_type: 杂志文章
doi:10.1002/da.22962
更新日期:2019-12-01 00:00:00