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Schizophrenia hallucination

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https://www.readbyqxmd.com/read/28638205/effects-of-transcranial-direct-current-stimulation-tdcs-for-auditory-hallucinations-a-systematic-review
#1
Haibin Li, Yiran Wang, Jiangling Jiang, Wei Li, Chunbo Li
BACKGROUND: Transcranial direct current stimulation (tDCS) is a non-invasion brain stimulation, which has been suggested as a safe and promising treatment for auditory hallucinations, however, no systematic review has been conducted to evaluate the effects of tDCS on auditory hallucinations (AH). OBJECTIVE: To investigate the efficacy and safety of tDCS for auditory hallucinations among patients with schizophrenia. METHODS: We searched relevant randomized controlled trials (RCTs) from PubMed, EMBASE, the Cochrane Library, Chinese National Knowledge Infrastructure, Chongqing VIP database for Chinese Technical Periodicals, WANFANG DATA, Chinese Biological Medical Literature Database, and Taiwan Electronic Periodical Services (TEPS) before February 13, 2016...
December 25, 2016: Shanghai Archives of Psychiatry
https://www.readbyqxmd.com/read/28634108/disturbances-of-novel-object-exploration-and-recognition-in-a-chronic-ketamine-mouse-model-of-schizophrenia
#2
Maria Jelena Hauser, Dirk Isbrandt, Jochen Roeper
Schizophrenia is a chronic and devastating disease with an overall lifetime risk of 1%. While positive symptoms of schizophrenia such as hallucinations and delusions are reduced by antipsychotic medication based on the inhibition of type 2 dopaminergic receptors (D2R), negative symptoms (e.g. reduced motivation) and cognitive symptoms (e.g. impaired working memory) of schizophrenia are not effectively treated by current medication. This dichotomy might arise in part because of our limited understanding of the pathophysiology of negative and cognitive symptoms in schizophrenia...
June 17, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28625224/auditory-verbal-hallucinations-are-related-to-cortical-thinning-in-the-left-middle-temporal-gyrus-of-patients-with-schizophrenia
#3
Y Cui, B Liu, M Song, D M Lipnicki, J Li, S Xie, Y Chen, P Li, L Lu, L Lv, H Wang, H Yan, J Yan, H Zhang, D Zhang, T Jiang
BACKGROUND: Auditory verbal hallucinations (AVHs) are one of the most common and severe symptoms of schizophrenia, but the neuroanatomical abnormalities underlying AVHs are not well understood. The present study aims to investigate whether AVHs are associated with cortical thinning. METHODS: Participants were schizophrenia patients from four centers across China, 115 with AVHs and 93 without AVHs, as well as 261 healthy controls. All received 3 T T1-weighted brain scans, and whole brain vertex-wise cortical thickness was compared across groups...
June 19, 2017: Psychological Medicine
https://www.readbyqxmd.com/read/28613395/clozapine-dose-for-schizophrenia
#4
REVIEW
Selvizhi Subramanian, Birgit A Völlm, Nick Huband
BACKGROUND: Schizophrenia and related disorders such as schizophreniform and schizoaffective disorder are serious mental illnesses characterised by profound disruptions in thinking and speech, emotional processes, behaviour and sense of self. Clozapine is useful in the treatment of schizophrenia and related disorders, particularly when other antipsychotic medications have failed. It improves positive symptoms (such as delusions and hallucinations) and negative symptoms (such as withdrawal and poverty of speech)...
June 14, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28599949/quetiapine-extended-release-versus-aripiprazole-in-children-and-adolescents-with-first-episode-psychosis-the-multicentre-double-blind-randomised-tolerability-and-efficacy-of-antipsychotics-tea-trial
#5
Anne Katrine Pagsberg, Pia Jeppesen, Dea Gowers Klauber, Karsten Gjessing Jensen, Ditte Rudå, Marie Stentebjerg-Olesen, Peter Jantzen, Simone Rasmussen, Eva Ann-Sofie Saldeen, Maj-Britt Glenn Lauritsen, Niels Bilenberg, Anne Dorte Stenstrøm, Louise Nyvang, Sarah Madsen, Thomas M Werge, Theis Lange, Christian Gluud, Maria Skoog, Per Winkel, Jens Richardt M Jepsen, Birgitte Fagerlund, Christoph U Correll, Anders Fink-Jensen
BACKGROUND: Head-to-head trials to guide antipsychotic treatment choices for paediatric psychosis are urgently needed because extrapolations from adult studies might not be implementable. In this superiority trial with two-sided significance testing, we aimed to compare the efficacy and safety of quetiapine-extended release (quetiapine-ER) versus aripiprazole in children and adolescents with first-episode psychosis, to determine whether differences between the two treatments were sufficient to guide clinicians in their choice of one drug over the other...
June 6, 2017: Lancet Psychiatry
https://www.readbyqxmd.com/read/28588507/neurovascular-unit-dysfunction-and-blood-brain-barrier-hyperpermeability-contribute-to-schizophrenia-neurobiology-a-theoretical-integration-of-clinical-and-experimental-evidence
#6
REVIEW
Souhel Najjar, Silky Pahlajani, Virginia De Sanctis, Joel N H Stern, Amanda Najjar, Derek Chong
Schizophrenia is a psychotic disorder characterized by delusions, hallucinations, negative symptoms, as well as behavioral and cognitive dysfunction. It is a pathoetiologically heterogeneous disorder involving complex interrelated mechanisms that include oxidative stress and neuroinflammation. Neurovascular endothelial dysfunction and blood-brain barrier (BBB) hyperpermeability are established mechanisms in neurological disorders with comorbid psychiatric symptoms such as epilepsy, traumatic brain injury, and Alzheimer's disease...
2017: Frontiers in Psychiatry
https://www.readbyqxmd.com/read/28581537/clinical-significance-of-psychotic-like-experiences-in-children-and-adolescents
#7
REVIEW
Barbara Remberk
Psychotic-like experiences (PLEs) are subtle, subclinical hallucinations and delusions which are quite common in general population. In children and youth prevalence rate is probably age-dependent with higher rate in younger population. PLEs are suggested to be a form of extended psychosis phenotype. Similar demographic, genetic and environmental risk factors observed for PLEs and schizophrenia support this hypothesis. Other mental health problems associated with PLEs include depression, suicidality, low functioning and psychiatric comorbidity...
April 30, 2017: Psychiatria Polska
https://www.readbyqxmd.com/read/28576898/sex-differences-in-auditory-verbal-hallucinations-in-early-middle-and-late-adolescence-results-from-a-survey-of-17-451-japanese-students-aged-12-18-years
#8
Yoko Morokuma, Kaori Endo, Atushi Nishida, Syudo Yamasaki, Shuntaro Ando, Yuko Morimoto, Miharu Nakanishi, Yuji Okazaki, Toshi A Furukawa, Shigeru Morinobu, Shinji Shimodera
OBJECTIVES: Women have higher rates of auditory verbal hallucinations (AVH) than men; however, less is known about sex differences in the prevalence of AVH in early, middle and late adolescence. We sought to elucidate the differences in the prevalence of AVH and to examine the degree to which these differences could be explained by differences in levels of depressive symptoms. DESIGN: We used a cross-sectional design and a self-reported questionnaire. SETTING: Participants were recruited from public junior and senior high schools in Tsu, Mie Prefecture and Kochi Prefecture, Japan...
June 1, 2017: BMJ Open
https://www.readbyqxmd.com/read/28575321/the-validity-and-sensitivity-of-panss-6-in-the-clinical-antipsychotic-trials-of-intervention-effectiveness-catie-study
#9
Søren D Østergaard, Leslie Foldager, Ole Mors, Per Bech, Christoph U Correll
It was recently demonstrated in acutely exacerbated schizophrenia that a 6-item version (PANSS-6: P1 = delusions, P2 = conceptual disorganization, P3 = hallucinations, N1 = blunted affect, N4 = social withdrawal, N6 = lack of spontaneity/flow of conversation) of the 30-item Positive and Negative Syndrome Scale (PANSS-30) was scalable (all items provide unique information regarding syndrome severity) and able to separate the effect of antipsychotics from placebo. Here, we tested the validity and sensitivity of PANSS-6 in the Clinical Antipsychotic Trials of Intervention Effectiveness (CATIE) outpatient study...
June 1, 2017: Schizophrenia Bulletin
https://www.readbyqxmd.com/read/28572034/decreased-middle-temporal-gyrus-connectivity-in-the-language-network-in-schizophrenia-patients-with-auditory-verbal-hallucinations
#10
Linchuan Zhang, Baojuan Li, Huaning Wang, Liang Li, Qimei Liao, Yang Liu, Xianghong Bao, Wenlei Liu, Hong Yin, Hongbing Lu, Qingrong Tan
As the most common symptoms of schizophrenia, the long-term persistence of obstinate auditory verbal hallucinations (AVHs) brings about great mental pain to patients. Neuroimaging studies of schizophrenia have indicated that AVHs were associated with altered functional and structural connectivity within the language network. However, effective connectivity that could reflect directed information flow within this network and is of great importance to understand the neural mechanisms of the disorder remains largely unknown...
May 29, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28562181/working-memory-predicts-presence-of-auditory-verbal-hallucinations-in-schizophrenia-and-bipolar-disorder-with-psychosis
#11
Lisanne M Jenkins, Anjuli S Bodapati, Rajiv P Sharma, Cherise Rosen
OBJECTIVE: The recent dramatic increase in research investigating auditory verbal hallucinations (AVHs) has broadened the former narrow focus on schizophrenia to incorporate additional populations that experience these symptoms. However, an understanding of potential shared mechanisms remains elusive. Based on theories suggesting a failure of top-down cognitive control, we aimed to compare the relationship between AVHs and cognition in two categorical diagnoses of psychosis, schizophrenia and psychotic bipolar disorder...
May 31, 2017: Journal of Clinical and Experimental Neuropsychology
https://www.readbyqxmd.com/read/28554165/network-modeling-of-resting-state-connectivity-points-towards-the-bottom-up-theories-of-schizophrenia
#12
François Orliac, Pascal Delamillieure, Nicolas Delcroix, Mikael Naveau, Perrine Brazo, Annick Razafimandimby, Sonia Dollfus, Marc Joliot
The dysconnectivity theory of schizophrenia proposes that schizophrenia symptoms arise from abnormalities in neuronal synchrony. Resting-state Functional Connectivity (FC) techniques allow us to highlight synchronization of large-scale networks, the Resting-state Networks (RNs). A large body of work suggests that disruption of RN synchronization could give rise to specific schizophrenia symptoms. The present study aimed to explore within- and between-network FC strength of 34 RNs in 29 patients suffering from schizophrenia, and their relationships with schizophrenia symptoms...
April 12, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28546056/glutamate-in-dorsolateral-prefrontal-cortex-and-auditory-verbal-hallucinations-in-patients-with-schizophrenia-a-1-h-mrs-study
#13
Branislava Ćurčić-Blake, Leonie Bais, Anita Sibeijn-Kuiper, Hendrika Maria Pijnenborg, Henderikus Knegtering, Edith Liemburg, André Aleman
PURPOSE: Glutamatergic models of psychosis propose that dysfunction of N-methyl-d-aspartate (NMDA) receptors, and associated excess of glutamate, may underlie psychotic experiences in people with schizophrenia. However, little is known about the specific relation between glutamate and auditory verbal hallucinations (AVH) in patients with psychosis. In this study, levels of glutamate+glutamine (Glx) in the left lateral prefrontal lobe were determined using proton magnetic resonance spectroscopy ((1)H MRS) to calculate their association with AVH...
May 22, 2017: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/28532686/mismatch-negativity-mmn-to-spatial-deviants-and-behavioral-spatial-discrimination-ability-in-the-etiology-of-auditory-verbal-hallucinations-and-thought-disorder-in-schizophrenia
#14
Megan A Perrin, Joshua T Kantrowitz, Gail Silipo, Elisa Dias, Omar Jabado, Daniel C Javitt
Persistent auditory verbal hallucinations (AVH) in schizophrenia are increasingly tied to dysfunction at the level of auditory cortex. AVH may reflect in part misattribution of internally generated thoughts to external spatial locations. Here, we investigated the association between persistent AVH and spatial localization abilities assessed both behaviorally and by mismatch negativity (MMN) to location deviants. METHODS: Spatial- and tonal- discrimination abilities were assessed in patients (n=20) and controls (n=20) using free-field tones...
May 19, 2017: Schizophrenia Research
https://www.readbyqxmd.com/read/28517948/randomized-controlled-trial-of-an-internet-cognitive-behavioral-skills-based-program-for-auditory-hallucinations-in-persons-with-psychosis
#15
Jennifer D Gottlieb, Vasudha Gidugu, Mihoko Maru, Miriam C Tepper, Matthew J Davis, Jennifer Greenwold, Ruth A Barron, Brian P Chiko, Kim T Mueser
OBJECTIVE: Despite strong evidence supporting the effectiveness of cognitive-behavioral therapy for psychosis (CBTp), most clinicians in the United States have received little or no training in the approach and access remains very low, indicating a potential role for technology in increasing access to this intervention. Coping With Voices (CWV) is a 10-session, interactive, Web-based CBTp skills program that was developed to meet this need, and was shown to be feasible and associated with reduced severity of auditory hallucinations in a previous pilot study...
May 18, 2017: Psychiatric Rehabilitation Journal
https://www.readbyqxmd.com/read/28516807/neurofeedback-based-enhancement-of-single-trial-auditory-evoked-potentials-feasibility-in-healthy-subjects
#16
Kathryn Rieger, Marie-Helene Rarra, Nicolas Moor, Laura Diaz Hernandez, Anja Baenninger, Nadja Razavi, Thomas Dierks, Daniela Hubl, Thomas Koenig
Previous studies showed a global reduction of the event-related potential component N100 in patients with schizophrenia, a phenomenon that is even more pronounced during auditory verbal hallucinations. This reduction assumingly results from dysfunctional activation of the primary auditory cortex by inner speech, which reduces its responsiveness to external stimuli. With this study, we tested the feasibility of enhancing the responsiveness of the primary auditory cortex to external stimuli with an upregulation of the event-related potential component N100 in healthy control subjects...
May 1, 2017: Clinical EEG and Neuroscience: Official Journal of the EEG and Clinical Neuroscience Society (ENCS)
https://www.readbyqxmd.com/read/28507523/autism-spectrum-disorders-and-schizophrenia-spectrum-disorders-excitation-inhibition-imbalance-and-developmental-trajectories
#17
Roberto Canitano, Mauro Pallagrosi
Autism spectrum disorders (ASD) and schizophrenia spectrum disorders (SSD) share clinical and genetic components that have long been recognized. The two disorders co-occur more frequently than would be predicted by their respective prevalence, suggesting that a complex, multifactor association is involved. However, DSM-5 maintains the distinction between ASD, with core social and communication impairments, and SSD, including schizophrenia (SCZ), with hallucinations, delusions, and thought disorder as essential features...
2017: Frontiers in Psychiatry
https://www.readbyqxmd.com/read/28497892/echoes-of-others-a-path-analytic-examination-of-an-interpersonal-cognitive-model-of-voice-related-distress
#18
Esther R Cole, Clara Strauss, Chris Fife-Schaw, Simon McCarthy-Jones
OBJECTIVES: Cognitive models propose that levels of distress associated with auditory verbal hallucinations ('voices') are influenced by the hearers' beliefs about their voices (perceived malevolence and omnipotence), their negative beliefs about themselves and others and their attachment style. This study aims to test a comprehensive model of the relationship between these variables in order to identify distal and proximal interpersonal and cognitive factors contributing to voice-related distress...
May 12, 2017: Psychology and Psychotherapy
https://www.readbyqxmd.com/read/28496495/cortical-alpha-activity-in-schizoaffective-patients
#19
Mahdi Moeini, Ali Khaleghi, Mohammad Reza Mohammadi, Hadi Zarafshan, Rachel L Fazio, Hamid Majidi
Objective: Electrophysiological studies have identified abnormal oscillatory activities in the cerebral cortex in schizophrenia and mood disorders. Biological and pathophysiological evidence suggests specific deficits in serotonin (5-HT) receptor function in schizoaffective disorder (SA), a clinical syndrome with characteristics of both schizophrenia and bipolar disorder. This study investigated alpha oscillations in patients with SA. Method: Electroencephalography was used to measure ongoing and evoked alpha oscillations in 38 adults meeting Diagnostic and Statistical Manual of Mental Disorders-Fourth Edition (DSM-IV) criteria for SA, and in 39 healthy controls...
January 2017: Iranian Journal of Psychiatry
https://www.readbyqxmd.com/read/28493561/distress-omnipotence-and-responsibility-beliefs-in-command-hallucinations
#20
Lyn Ellett, Olga Luzon, Max Birchwood, Zarina Abbas, Abi Harris, Paul Chadwick
OBJECTIVES: Command hallucinations are considered to be one of the most distressing and disturbing symptoms of schizophrenia. Building on earlier studies, we compare key attributes in the symptomatic, affective, and cognitive profiles of people diagnosed with schizophrenia and hearing voices that do (n = 77) or do not (n = 74) give commands. METHODS: The study employed a cross-sectional design, in which we assessed voice severity, distress and control (PSYRATs), anxiety and depression (HADS), beliefs about voices (BAVQ-R), and responsibility beliefs (RIQ)...
May 11, 2017: British Journal of Clinical Psychology
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