Social and nonsocial cognitive functions in patients with schizophrenia: A comparative neuropsychological and neurophysiological study

2017 ◽  
Vol 41 (S1) ◽  
pp. s817-s817
Author(s):  
M.A. Khalil ◽  
A.A. Saleh ◽  
N.M. El-Fayoumy ◽  
S.M. Gohar
Keyword(s):  
Social Cognition ◽  
Psychiatric Disorders ◽  
Cognitive Deficits ◽  
Event Related Potential ◽  
P300 Amplitude ◽  
Psychotic Symptoms ◽  
Control Group ◽  
P300 Latency ◽  
Symptom Scale ◽  
The Mind

BackgroundPatients with schizophrenia suffer from cognitive deficits in seven domains in addition to social cognition. P300 latency and amplitude have been linked in these patients to the basic cognitive deficits.ObjectivesComparing patients suffering from schizophrenia with matched healthy subjects as regards auditory event related potential tests as measured by P300.Subjects and methodsFifty-two subjects were divided into 2 groups: group (A): 27 patients with schizophrenia according to the diagnostic and statistical manual of mental disorders-text revised (DSM-IV TR). Those with current substance use, psychiatric disorders or organic disorders were excluded. Group (B): 25 healthy control subjects with negative history of substance and psychiatric disorders. Patients were assessed using Positive and Negative Symptom Scale (PANSS) for severity of psychotic symptoms, Addenbrook's Cognitive Examination Revised (ACE-R) for basic cognitive, reading the mind in the eye test for social cognition, P300 and electro-encephalography (EEG)ResultsThe two groups were different significantly in ACE total and its subtests measuring attention-orientation, memory, language, visuospatial and reading the mind in the eye test for social cognition scores with patients showing lower scores (P = 0.000, 0.012, 0.000, 0.038, 0.041 and 0.001 respectively). Control group had higher amplitude of P300 and shorter latency than patients (P = 0.003 and 0.005 respectively). P300 amplitude correlated positively with visuospatial memory (P = 0.015). PANSS general pathology scale correlated positively with duration of untreated psychosis (P = 0.029) and with fluency (P = 0.047).ConclusionPatients with schizophrenia differ from controls in P300.Disclosure of interestThe authors have not supplied their declaration of competing interest.

scholarly journals Cognitive and Electrophysiological Correlates of Working Memory Impairments in Neurofibromatosis Type 1

2021 ◽  
Author(s):  
Gorana Pobric ◽  
Jason R. Taylor ◽  
Hemavathy M. Ramalingam ◽  
Emily Pye ◽  
Louise Robinson ◽  
...  
Keyword(s):  
Working Memory ◽  
Single Gene ◽  
Neurofibromatosis Type ◽  
Event Related Potential ◽  
P300 Amplitude ◽  
Group Differences ◽  
Control Group ◽  
P300 Latency ◽  
Memory Impairments

AbstractNeurofibromatosis 1 (NF1) is a single gene disorder associated with working Memory (WM) impairments. The aim of this study was to investigate P300 event-related potential (ERP) associated with WM in NF1. Sixteen adolescents with NF1 were compared with controls on measures of WM and EEG was recorded during a WM nback task. The NF1 group showed poorer performance on measures of WM as compared to the control group. No group differences were observed in P300 amplitude at Pz, but P300 latency was shorter in the NF1 group. Topographic analyses of P300 amplitude showed group differences indicating neural processing differences in the NF1 group relative to controls, which possibly contribute to the cognitive deficits seen in this population.

‘Soother of mind’ – meditation in psychiatric disorders: a narrative review

2021 ◽  
pp. 1-7
Author(s):  
Vinod Kumar ◽  
Shree Raksha Bhide ◽  
Rashmi Arasappa ◽  
Shivarama Varambally ◽  
Bangalore N. Gangadhar
Keyword(s):  
Psychiatric Disorders ◽  
Negative Symptoms ◽  
Psychotic Disorders ◽  
Psychotic Symptoms ◽  
Complete Absorption ◽  
Psychiatric Conditions ◽  
Biological Aspects ◽  
The Mind ◽  
Anxiety Depression ◽  
Meditative Practices

SUMMARY Meditation, a component of ashtanga yoga, is an act of inward contemplation in which the mind fluctuates between a state of attention to a stimulus and complete absorption in it. Some forms of meditation have been found to be useful for people with psychiatric conditions such as anxiety, depression and substance use disorder. Evidence for usefulness of meditation for people with psychotic disorders is mixed, with reported improvements in negative symptoms but the emergence/precipitation of psychotic symptoms. This article narrates the benefits of meditation in psychiatric disorders, understanding meditation from the yoga perspective, biological aspects of meditation and practical tips for the practice of meditation. We also explain possible ways of modifying meditative practices to make them safe and useful for the patient population and useful overall as a society-level intervention.

scholarly journals Emotional Substrates in Neuroticism: The Reactions to Arousal-evoking Stimuli of Various Strengths

2020 ◽  
Vol 19 (2) ◽  
pp. 262-267
Author(s):  
Nasir Yusoff ◽  
Faruque Reza ◽  
Nik NurAzhani Anuar ◽  
Roslee Ahmad
Keyword(s):  
Significant Interaction ◽  
Medical Condition ◽  
Medical Science ◽  
Visual Stimuli ◽  
Event Related Potential ◽  
P300 Amplitude ◽  
P300 Latency ◽  
Significant Interaction Effect ◽  
Mean Values ◽  
Emotional Pictures

Objective: Neuroticism is a medical condition associated with negative affect and is considered to predispose one to mental disorders. This study examined the effectsof arousal-evoking stimuli of various strengths on the severity of neuroticism. Materials and Methods: In the Event Related Potential (ERP)/electroencephalograph (EEG) recording session that was held at the Clinical Neuroscience Laboratory at a local hospital, Electroencephalogram was recorded in 58 participants (N=29 for moderate neuroticism and 29 for mild neuroticism) after they were screened for the severity of the neurotic trait. Universal emotional pictures were chosen randomly from the International Affective Picture System (IAPS) and were used as visual stimuli in the experiment. Visual stimuli weredivided into three categories (high, moderate, low) based on the IAPS normative mean values of arousal. Results: The significant interaction effect of P300 latency between neuroticism and arousal strength was found in the mid-frontal region. Meanwhile, independent of neuroticism, the main effects of arousal strength of the P300 (amplitude and latency) and N200 (latency) were observed in the mid-central region. Conclusion: There is a significant interaction between the severity of neuroticism and the emotional arousal strength, thus, points to the implication of the emotion process in the brain rewards system especially among individuals with neuroticism. Bangladesh Journal of Medical Science Vol.19(2) 2020 p.262-267

scholarly journals Neural Processing of Other-Race Faces as a Function of Racial Familiarity: A P300 Study

2018 ◽  
Vol 7 (3.22) ◽  
pp. 21
Author(s):  
Tai Yan Shan ◽  
Faruque Reza ◽  
Tahamina Begum ◽  
Nasir Yusoff
Keyword(s):  
Repeated Measures ◽  
Event Related Potential ◽  
The Other ◽  
P300 Amplitude ◽  
Control Group ◽  
Neural Processing ◽  
Oddball Task ◽  
The Social ◽  
Independent Variable ◽  
Cognition Model

Background: The other-race categorisation advantage (ORCA) is a well-established phenomenon, whereby other-race faces are categorised faster than own race faces. Objectives: This study investigated whether extraverts would demonstrate an ORCA-like effect toward unfamiliar other-race faces and familiar other-race faces in a modified oddball and choice reaction paradigm.  Methods: This event-related potential (ERP) study employed a repeated measures experimental design with one independent variable (racial familiarity) and three levels (familiar other-race/Malay faces, unfamiliar other-race/African faces, control group/furniture photos). In the oddball task, African faces and Malay faces were the target stimuli and furniture photos were the standard stimuli. Electroencephalography data (EEG) was collected during the oddball task, from which ERP components were derived. Results: The reaction time (RT) for African and Malay faces were not significantly different.  Significant effect of racial familiarity on P300 latencies at all electrode sites was not observed.  However, there was a significant effect of racial familiarity on P300 amplitudes at midline electrodes (Cz).  It was also observed that the P300 amplitude was larger for African faces than Malay faces at midline electrodes (Cz). Conclusion: An ORCA-like effect was not found in categorisation tasks involving faces from a familiar and an unfamiliar other-race, but a larger P300 amplitude was evoked by African faces. This dissociation between RT and P300 amplitude provided important theoretical implications with regard to models associated with ORCA. Specifically, the current findings lent support to the social cognition model and the Categorisation-Individuation Model (CIM).

P300 event-related potential and serotonin-1A activity in depression

1999 ◽  
Vol 14 (3) ◽  
pp. 143-147 ◽  
Author(s):  
M Hansenne ◽  
M Ansseau
Keyword(s):  
Critical Role ◽  
Brain Structures ◽  
Significant Negative Correlation ◽  
Event Related Potential ◽  
P300 Amplitude ◽  
P300 Latency ◽  
Endocrine Response ◽  
Major Depressive ◽  
Serotonergic Activity ◽  
The Brain

SummaryThe identification of the brain structures and neurotransmitters responsible for the generation and/or modulation of P300 could lead to important clinical implications. Since serotonin disturbances seem to play a critical role in depression, the aim of the study was to assess the possible relationships between the P300 event-related brain potential and serotonergic activity in depression. The study was conducted among 45 major depressive inpatients, and serotonergic activity was assessed by prolactin (PRL) response to flesinoxan (a 5-HT1A agonist). Results showed a significant negative correlation between P300 amplitude and PRL response to flesinoxan (r = –0.40, P = 0.007 at Cz; r = –0.47, P = 0.001 at Pz). In contrast, both P300 latency and reaction time were not related to endocrine response. This study supports a role for serotonin-1A in the neurobiological modulation of P300 amplitude.

Going AWOL in the Brain: Mind Wandering Reduces Cortical Analysis of External Events

2008 ◽  
Vol 20 (3) ◽  
pp. 458-469 ◽  
Author(s):  
Jonathan Smallwood ◽  
Emily Beach ◽  
Jonathan W. Schooler ◽  
Todd C. Handy
Keyword(s):  
External Environment ◽  
Mind Wandering ◽  
Event Related Potential ◽  
Self Report ◽  
P300 Amplitude ◽  
Control Analysis ◽  
Potential Component ◽  
Response Task ◽  
The Mind ◽  
Subjective Reports

Converging evidence from neuroscience suggests that our attention to the outside world waxes and wanes over time. We examined whether these periods of “mind wandering” are associated with reduced cortical analysis of the external environment. Participants performed a sustained attention to response task in which they responded to frequent “nontargets” (digits 0–9) and withheld responses for infrequent “targets” (the letter X). Mind wandering was defined both behaviorally, indicated by a failure to withhold a response to a target, and subjectively, via self-report at a thought probe. The P300 event-related potential component for nontargets was reduced prior to both the behavioral and subjective reports of mind wandering, relative to periods of being “on-task.” Regression analysis of P300 amplitude revealed significant common variance between behavioral and subjective markers of mind wandering, suggesting that both markers reflect a common underlying mental state. Finally, control analysis revealed that the effect of mind wandering on the P300 could not be ascribed to changes in motor activity nor was it associated with general arousal. Our data suggest that when trying to engage attention in a sustained manner, the mind will naturally ebb and flow in the depth of cognitive analysis it applies to events in the external environment.

Social Cognition in Bipolar Illness

2009 ◽  
Vol 24 (S1) ◽  
pp. 1-1
Author(s):  
G. Lahera
Keyword(s):  
Bipolar Disorder ◽  
Executive Function ◽  
Social Network ◽  
Social Cognition ◽  
Cognitive Deficits ◽  
Mental States ◽  
Control Group ◽  
Cognitive Mechanisms ◽  
Bipolar Illness ◽  
Multiple Factors

Theory of Mind (ToM) is defined as the cognitive ability to infer mental states to oneself and to others, in terms of thought, emotion and intention. There are many studies about ToM in schizophrenia, but a paucity of them about ToM in bipolar disorder, despite the suggesting relationship between ToM and emotions. Some affective patients were included as control group in schizophrenia studies, but these samples were small and heterogeneous. Some authors have found ToM deficit in manic and depressed patients, but there is also some evidence of a ToM deficit even in a state of euthymia, associated to other cognitive deficits, mainly in executive function. Multiple factors could be involved in this ToM deficit, but these studies open the way for a line of research about the cognitive mechanisms underlying the psychosocial disadjustment that these patients present. Mentalization skills could be more decisive for keeping a job or a social network than other neurocognitive variables, and BD remains a very important cause of psychosocial disadvantage. In this workshop we will debate the relevance of these findings in BD and the potential therapeutic consecuences.

scholarly journals Is cognitive processing affected in adults with hypospadias?: P300 study

Open Medicine ◽  
2015 ◽  
Vol 10 (1) ◽  
Author(s):  
Hakan Tekeli ◽  
Hasan Koçoğlu ◽  
Cabir Alan ◽  
Mustafa Emir Tavşanlı ◽  
Halit Yaşar ◽  
...  
Keyword(s):  
Cognitive Processing ◽  
Event Related Potentials ◽  
P300 Amplitude ◽  
Military Hospital ◽  
Oddball Paradigm ◽  
Control Group ◽  
P300 Latency ◽  
Urogenital System ◽  
Cognitive Changes ◽  
Related Potentials

AbstractBackground: Hypospadias is a common urogenital system disorder. The frenulum, which is the most sensitive area of the glans penis, is not present in patients with hypospadias. This may lead to a failure in sexual and ejaculatory function, and cause emotional problems affecting cognitive processes.Aim: We aimed to study auditory Event Related Potentials (ERP) in patients with hypospadias to understand the status of cognitive function.Materials and Methods: Seventeen patients with hypospadias who presented to the Urology Outpatient Clinic of Çanakkale Military Hospital, and 11 healthy individuals of similar age were chosen. The auditory oddball paradigm with ERP from the Cz and Fz head regions were studied. The latency and amplitude of the P300 wave were measured.Results: Both, the study and control groups consisted of young males. Although the study group had a longer P300 latency and lower P300 amplitude when compared to control group, the results were not statistically significant (p: 0.059 and 0.346 respectively).Conclusion: Although the results are not statistically significant, our findings indicate that there may be cognitive changes in patients with hypospadias. Further studies of larger sample size and older patient cohorts are needed.

scholarly journals Real-time fMRI neurofeedback as a new treatment for psychiatric disorders: a systematic review

2021 ◽  
Author(s):  
Pamela Pindi ◽  
Josselin Houenou ◽  
Camille Piguet ◽  
Pauline Favre
Keyword(s):  
Psychiatric Disorders ◽  
Real Time ◽  
Functional Mri ◽  
Psychiatric Symptoms ◽  
Psychotic Symptoms ◽  
Control Group ◽  
Controlled Trials ◽  
Brain Response ◽  
Double Blind

Background: Neurofeedback using real-time functional MRI (RT-fMRI-NF) is an innovative technique that allows to voluntarily modulating a targeted brain response and its associated behavior. Despite promising results in the current literature, its effectiveness on symptoms’ management in psychiatric disorders is not yet clearly demonstrated. This review aims to evaluate the effectiveness of RT-fMRI-NF in the treatment of psychiatric disorders and to provide methodological suggestions for future studies. Methods: Web of Science and PubMed databases were searched using the keywords: neurofeedback AND (fMRI OR “functional magnetic resonance imag*” OR “functional MRI”) AND (“real-time” OR “real time”). Twenty-six clinical trials focusing on psychiatric disorders were included and categorized according to the diagnostic categories. The RT-fMRI-NF efficacy was assessed by reporting changes in clinical endpoints before vs. after NF training and before or after NF training vs. follow-up. Results: Among the 26 studies, 18 were controlled trials, of which five showed significant clinical improvement in the experimental vs. control group after the training. Eight studies found an effect at follow-up on ADHD symptoms, emotion dysregulation, depressive symptoms, hallucinations, psychotic symptoms and specific fear. Limitations: Here, we only focused our review on fMRI-based NF training. Conclusion: The use of RT-fMRI-NF as a treatment for psychiatric symptoms is promising. However, further double blind, randomized-controlled trials are warranted.

scholarly journals P300 and decision-making in neuromarketing

2021 ◽  
Vol 4 (3) ◽  
pp. 21-26
Author(s):  
Aida Azlina Mansor ◽  
Salmi Mohd Isa ◽  
Syaharudin Shah Mohd Noor
Keyword(s):  
Decision Making ◽  
Test Methods ◽  
Event Related Potential ◽  
P300 Amplitude ◽  
P300 Latency ◽  
Decision Making Process ◽  
Related Research ◽  
P300 Wave ◽  
Human Event ◽  
Marketing Methods

Neuromarketing provides insights into consumers' decision-making that traditional marketing test methods cannot offer. The foundation in the process of decision-making is P300. Thus, the P300 wave is a potential Event-Related Component (ERP) used to measure consumers' decision-making process. The P300 wave represents a positive transition in human event-related potential. Therefore, the P300 is determined by measuring the amplitude and latency of the consumers. A higher P300 amplitude indicates greater confidence in the decision-making process, while a longer P300 latency indicates lower attentiveness. Thus, P300 in neuroscience, which investigates customers' responses in-depth, cannot be accomplished by typical marketing methods. For many years, P300 components such as attitudes, preferences, and information-based decision-making have been examined extensively in marketing-related research. However, a review of an ERP in neuromarketing method is fewer reported. This mini review describes some analysis on P300 and decision-making by several researchers.

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