Auditory event-related potentials, neurocognition, and global functioning in drug naïve first-episode schizophrenia and bipolar disorder

2021 ◽  
pp. 1-10
Author(s):  
Xiaojing Li ◽  
Wei Deng ◽  
Rui Xue ◽  
Qiang Wang ◽  
Hongyan Ren ◽  
...  
Keyword(s):  
Bipolar Disorder ◽  
Rating Scale ◽  
Event Related Potentials ◽  
Event Related Potential ◽  
First Episode ◽  
Oddball Paradigm ◽  
Global Functioning ◽  
Adult Intelligence Scale ◽  
Related Potentials ◽  
Drug Naïve

Abstract Background Deficits in event-related potential (ERP) including duration mismatch negativity (MMN) and P3a have been demonstrated widely in chronic schizophrenia (SZ) but inconsistent findings were reported in first-episode patients. Psychotropic medications and diagnosis might contribute to different findings on MMN/P3a ERP in first-episode patients. The present study examined MMN and P3a in first episode drug naïve SZ and bipolar disorder (BPD) patients and explored the relationships among ERPs, neurocognition and global functioning. Methods Twenty SZ, 24 BPD and 49 age and sex-matched healthy controls were enrolled in this study. Data of clinical symptoms [Positive and Negative Symptoms Scale (PANSS), Young Manic Rating Scale (YMRS), Hamilton Depression Rating Scale (HAMD)], neurocognition [Wechsler Adult Intelligence Scale (WAIS), Cattell's Culture Fair Intelligence Test (CCFT), Delay Matching to Sample (DMS), Rapid Visual Information Processing (RVP)], and functioning [Functioning Assessment Short Test (FAST)] were collected. P3a and MMN were elicited using a passive auditory oddball paradigm. Results Significant MMN and P3a deficits and impaired neurocognition were found in both SZ and BPD patients. In SZ, MMN was significantly correlated with FAST (r = 0.48) and CCFT (r = −0.31). In BPD, MMN was significantly correlated with DMS (r = −0.54). For P3a, RVP and FAST scores were significant predictors in SZ, whereas RVP, WAIS and FAST were significant predictors in BPD. Conclusions The present study found deficits in MMN, P3a, neurocognition in drug naïve SZ and BPD patients. These deficits appeared to link with levels of higher-order cognition and functioning.

Programma 2000: Celebrating 10 Years of Activity of an Italian Pilot Programme on Early Intervention in Psychosis

2008 ◽  
Vol 42 (12) ◽  
pp. 1003-1012 ◽  
Author(s):  
Angelo Cocchi ◽  
Anna Meneghelli ◽  
Antonio Preti
Keyword(s):  
Early Intervention ◽  
High Risk ◽  
Rating Scale ◽  
Young Patients ◽  
Skills Training ◽  
First Episode ◽  
Global Functioning ◽  
Adult Intelligence Scale ◽  
Cognitive Behavioural ◽  
Early Intervention In Psychosis

Objective: This paper describes the structure and the organization of the single Italian programme specifically targeted at the early detection of and interventions for subjects at onset of or at high risk of psychosis, Programma 2000. Methods: Programma 2000 is a comprehensive multi-modal protocol of early intervention in psychosis, set up in Milan in 1999. The service has been very active since its opening, and at the time of writing (spring (April) 2008), more than 300 young patients have been evaluated through a detailed protocol that embraces Health of the Nation Outcome Scale (HoNOS), Brief Psychiatric Rating Scale (BPRS), Cognitive Behavioural Assessment 2.0, Disability Assessment Schedule, Camberwell Family Interview, Wechsler Adult Intelligence Scale and the Early Recognition Inventory Retrospective Assessment of Symptoms. The treatment includes psychoeducation, cognitive behavioural therapy (CBT), both structured and unstructured psychosocial interventions and pharmacotherapy, when necessary. Results: The programme focuses on young people aged 17–30 years: to date, a total of 132 subjects with definite psychosis or within the high-risk category have been enrolled in treatment after assessment. Patients with first-episode psychosis were, on average and expectedly, more severe than those in the at-risk group, and were more likely to be prescribed antipsychotic drugs. A large majority of patients in both groups received tailored CBT; individual sessions of skills training were provided to two-thirds of patients. In both groups, improvement was found in both the BPRS and HoNOS, and in the level of global functioning as assessed on Global Assessment of Functioning at 6 month and 1 year follow up. Global functioning was more sensitive to change than symptom severity, reflecting the intensive and personalized efforts to improve social and role functioning in patients. Conclusions: Programma 2000 is still in development but it has already gained the support of therapists and other relevant people involved in the life of subjects at onset, or at high risk of psychosis.

Implicit need for affiliation and processing of emotional images: Event-related potential correlates

2018 ◽  
Vol 46 (2) ◽  
pp. 273-280
Author(s):  
Jianfeng Wang ◽  
Yan Wu ◽  
Lushi Jing
Keyword(s):  
Cognitive Processes ◽  
Event Related Potentials ◽  
Event Related Potential ◽  
Oddball Paradigm ◽  
Emotional Information ◽  
Need For Affiliation ◽  
Additional Information ◽  
Negative Images ◽  
Related Potentials ◽  
Emotional Information Processing

Implicit motives play an important role in the regulation of many basic cognitive processes, particularly in the stage of attention. We conducted a study with a sample of 58 college students to examine selective attention to emotional stimuli as a function of individual differences in the implicit need for affiliation (nAff). In an affective oddball paradigm, event-related potentials were recorded while participants viewed positive, neutral, and negative images of people. Results showed that individuals high in nAff elicited larger late positive potential amplitudes to negative images than those low in nAff did. These findings replicate and extend the results of a previous study focused on these relationships and provide additional information on the neural correlates of affiliation-related emotional information processing.

Auditory Mismatch Negativity and P300a Elicited by the “Optimal” Multi-feature Paradigm in Early Schizophrenia

2018 ◽  
Vol 49 (4) ◽  
pp. 238-247 ◽  
Author(s):  
Derek J. Fisher ◽  
Debra J. Campbell ◽  
Shelagh C. Abriel ◽  
Emma M. L. Ells ◽  
Erica D. Rudolph ◽  
...  
Keyword(s):  
Mismatch Negativity ◽  
Early Phase ◽  
Event Related Potentials ◽  
Event Related Potential ◽  
Positive Symptom ◽  
First Episode ◽  
Stimulus Context ◽  
Significant Group ◽  
Related Potentials ◽  
Auditory Change Detection

The mismatch negativity (MMN) is an EEG-derived event-related potential (ERP) elicited by any violation of a predicted auditory “rule,” regardless of whether one is attending to the stimuli and is thought to reflect updating of the stimulus context. Redirection of attention toward a rare, distracting stimulus event, however, can be measured by the subsequent P3a component of the P300. Chronic schizophrenia patients exhibit robust MMN deficits, as well as reductions in P3a amplitude. While, the substantial literature on the MMN in first-episode and early phase schizophrenia in this population reports reduced amplitudes, there also exist several contradictory studies. Conversely, P3a reduction in this population is relatively consistent, although the literature investigating this is small. The primary goal of this study was to contribute to our understanding of whether auditory change detection mechanisms are altered in early phase schizophrenia and, if so, under what conditions. Event-related potentials elicited by duration, frequency, gap, intensity, and location deviants (as elicited by the “optimal” multi-feature paradigm) were recorded in 14 early phase schizophrenia (EP) patients and 17 healthy controls (HCs). Electrical activity was recorded from 15 scalp electrodes. MMN/P3a amplitudes and latencies for each deviant were compared between groups and were correlated with clinical measures in EPs. There were no significant group differences for MMN amplitudes or latencies, though EPs did exhibit reduced P3a amplitudes to gap and duration deviants. Furthermore, PANSS (Positive and Negative Syndrome Scale) positive symptom scores were correlated with intensity MMN latencies and duration P3a amplitudes in EPs. These findings suggest that MMNs may not be as robustly reduced in early phase schizophrenia (relative to chronic illness), but that alterations may be more likely in patients with increased positive symptomatology. Furthermore, these findings offer further support to previous work suggesting that the understudied P3a may have good complementary utility as a marker of early cortical dysfunction in psychosis.

scholarly journals S46. IMPAIRED ERROR-PROCESSING IN PATIENTS WITH FIRST-EPISODE PSYCHOSIS: AN EVENT-RELATED POTENTIAL STUDY

2020 ◽  
Vol 46 (Supplement_1) ◽  
pp. S50-S50
Author(s):  
Jihye Park ◽  
Minah Kim ◽  
Wu Jeong Hwang ◽  
Jun Soo Kwon
Keyword(s):  
Correct Response ◽  
Event Related Potentials ◽  
First Episode Psychosis ◽  
Electrode Site ◽  
Event Related Potential ◽  
First Episode ◽  
Conflict Monitoring ◽  
Error Related Negativity ◽  
Episode Psychosis ◽  
Related Potentials

Abstract Background Impaired error/conflict monitoring as reflected in the event-related potentials (ERPs) has consistently reported in patients with schizophrenia. However, whether this impairment exist from the early phase of psychosis such as first-episode psychosis (FEP) is not yet been clearly reported. To investigate the presence of error/conflict monitoring deficit in early psychosis, we examined the error-related negativity (ERN), error-related positivity (Pe), and correct-response negativity (CRN) during the Go/Nogo task in the patients with FEP. Methods 25 patients with and 25 age, sex matched healthy controls (HCs) were participated in electroencephalographic recording during the Go/Nogo task. Trials with error response was analyzed to define ERN at Fz electrode site and Pe at Pz electrode site. Trials with correct response was used for CRN analysis at Fz electrode site. Independent samples t-test was used to compare the amplitudes of ERP components between FEP and HC groups. Pearson’s correlation analysis was performed to reveal the relationship of altered ERP component with symptomatic severity in patients with schizophrenia. Results FEP patients showed significantly smaller ERN amplitude at Fz electrode site compared to HCs (t=-3.294, p=0.002). However, there was no difference of CRN (t=0.017, p=0.986) and Pe (t=1.806, p=0.077) amplitudes between FEP and HC groups. There was no significant correlation of symptomatic severity and ERN amplitude at Fz electrode site in FEP patients. Discussion These findings suggest that impairments in error/conflict monitoring as reflected by ERN amplitude exist from the early course of psychotic disorder. Future study with larger sample size and subjects at earlier phase such as clinical high risk for psychosis would be needed to confirm the findings of current study.

scholarly journals Event-related potential examination of facial affect processing in bipolar disorder and schizophrenia

2012 ◽  
Vol 43 (1) ◽  
pp. 109-117 ◽  
Author(s):  
J. K. Wynn ◽  
C. Jahshan ◽  
L. L. Altshuler ◽  
D. C. Glahn ◽  
M. F. Green
Keyword(s):  
Bipolar Disorder ◽  
Event Related Potentials ◽  
Facial Affect ◽  
Event Related Potential ◽  
Facial Features ◽  
Healthy Controls ◽  
Related Potentials ◽  
Patient Groups ◽  
Bipolar Patients ◽  
Affect Processing

BackgroundPatients with bipolar disorder exhibit consistent deficits in facial affect identification at both behavioral and neural levels. However, little is known about which stages of facial affect processing are dysfunctional.MethodEvent-related potentials (ERPs), including amplitude and latency, were used to evaluate two stages of facial affect processing: N170 to examine structural encoding of facial features and N250 to examine decoding of facial features in 57 bipolar disorder patients, 30 schizophrenia patients and 30 healthy controls. Three conditions were administered: participants were asked to identify the emotion of a face, the gender of a face, or whether a building was one or two stories tall.ResultsSchizophrenia patients' emotion identification accuracy was lower than that of bipolar patients and healthy controls. N170 amplitude was significantly smaller in schizophrenia patients compared to bipolar patients and healthy controls, which did not differ from each other. Both patient groups had significantly longer N170 latency compared to healthy controls. For N250, both patient groups showed significantly smaller amplitudes compared with controls, but did not differ from each other. Bipolar patients showed longer N250 latency than healthy controls; patient groups did not differ from each other.ConclusionsBipolar disorder patients have relatively intact structural encoding of faces (N170) but are impaired when decoding facial features for complex judgments about faces (N250 latency and amplitude), such as identifying emotion or gender.

Effects of Zolmitriptan (ZomigTM) on Central Serotonergic Neurotransmission as Assessed by Active Oddball Auditory Event-Related Potentials in Volunteers without Migraine

Cephalalgia ◽  
1999 ◽  
Vol 19 (2) ◽  
pp. 100-106 ◽  
Author(s):  
AM Hughes ◽  
R Dixon ◽  
A Dane ◽  
J Kemp ◽  
L Cummings ◽  
...  
Keyword(s):  
Plasma Concentrations ◽  
Event Related Potentials ◽  
Quantitative Eeg ◽  
Event Related Potential ◽  
Target Tone ◽  
Auditory Target ◽  
Auditory Stimuli ◽  
Point Estimate ◽  
Oddball Paradigm ◽  
Related Potentials

In this randomized, double-blind, three-period crossover trial, 24 healthy volunteers without migraine received zolmitriptan 5 mg, dexfenfluramine 15 mg or placebo orally. At 2, 6, and 24 h postdose, auditory stimuli of 1000 Hz (nontarget tone) and 2000 Hz (target tone) were randomly and binaurally presented in an active oddball paradigm (4:1 ratio). Cortical auditory evoked responses were recorded for 500 msec poststimulus. Plasma concentrations of zolmitriptan and a 17-lead quantitative EEG were assessed at the same timepoints. Relative to placebo, zolmitriptan reduced the maximum absolute amplitude, amplitude difference (from nontarget tone noise) and area under the curve of the cortical auditory target tone event-related potential (P300 ERP). The most dramatic effect of zolmitriptan was to diminish the point estimate of noise during the 200-400 msec poststimulus epoch. The effect of zolmitriptan appeared concentration dependent. The latency of the P300 ERP was unaffected by zolmitriptan and there was no clinically significant effect on the EEG. Modification by zolmitriptan of the cortical electrical activity evoked by auditory stimuli confirms a central action of this drug in humans, which appears to affect cortical information processing without global alteration of the quantitative EEG.

scholarly journals Does Creativity Influence Visual Perception? - An Event-Related Potential Study With Younger and Older Adults

2021 ◽  
Vol 12 ◽  
Author(s):  
Petra Csizmadia ◽  
István Czigler ◽  
Boglárka Nagy ◽  
Zsófia Anna Gaál
Keyword(s):  
Visual Processing ◽  
Healthy Aging ◽  
Early Stage ◽  
Event Related Potentials ◽  
Event Related Potential ◽  
Oddball Paradigm ◽  
Top Down ◽  
Early Visual Processing ◽  
Related Potentials ◽  
Creative Group

We do not know enough about the cognitive background of creativity despite its significance. Using an active oddball paradigm with unambiguous and ambiguous portrait paintings as the standard stimuli, our aim was to examine whether: creativity in the figural domain influences the perception of visual stimuli; any stages of visual processing; or if healthy aging has an effect on these processes. We investigated event related potentials (ERPs) and applied ERP decoding analyses in four groups: younger less creative; younger creative; older less creative; and older creative adults. The early visual processing did not differ between creativity groups. In the later ERP stages the amplitude for the creative compared with the less creative groups was larger between 300 and 500 ms. The stimuli types were clearly distinguishable: within the 300–500 ms range the amplitude was larger for ambiguous rather than unambiguous paintings, but this difference in the traditional ERP analysis was only observable in the younger, not elderly groups, who also had this difference when using decoding analysis. Our results could not prove that visual creativity influences the early stage of perception, but showed creativity had an effect on stimulus processing in the 300–500 ms range, in indexing differences in top-down control, and having more flexible cognitive control in the younger creative group.

scholarly journals N100, N200, and P300 Auditory Event-Related Potentials Depending on Handedness and Response Tasks such as Button Pressing and Mental Counting

2020 ◽  
Vol 16 (4) ◽  
pp. 314-320
Author(s):  
Jinsook Kim ◽  
Kieun Lee ◽  
Eunsung Lee
Keyword(s):  
Event Related Potentials ◽  
Event Related Potential ◽  
P300 Amplitude ◽  
Oddball Paradigm ◽  
Auditory Event ◽  
Counting Task ◽  
Left Handed ◽  
Significant Difference ◽  
Related Potentials ◽  
Mental Counting

Purpose: This study was to determine the effects of response tasks, such as button pressing and mental counting, and handedness on N100, N200, and P300 auditory event-related potential (AERP).Methods: A total of 50 normal-hearing young adults with the average age of 21.6 (±1.5) years participated in this study. Among them, 15 men and 15 women were right-handed and 10 men and 10 women were left-handed. An oddball paradigm was used to deliver 30 stimuli of 2 kHz target tone bursts and 120 stimuli of 1 kHz nontarget tone bursts. The stimuli were presented at 70 dB sound pressure level with the rate of 1/s.Results: The button pressing task elicited significantly smaller N100 and larger P300 amplitudes than the mental counting task. N200 latency was significantly lower and P300 amplitude was higher in left-handed participants than those who are right-handed. Appearance percentages of right-/left-handed participants for N100, N200, and P300 were 80/95%, 85/85%, and 75/75% for the button pressing task and 80/90%, 80/80%, and 70/70% for mental counting task, respectively.Conclusion: The significant difference in appearance percentage between response tasks supported that P300 was a strong endogenous potential. N100 and N200 were thought to have both endogenous and exogenous characteristics. A more sensitive approach in selecting the task of response for the target stimuli and careful consideration for the handedness is necessary for AERP recordings.

Associations between P3a and P3b amplitudes and cognition in antipsychotic-naïve first-episode schizophrenia patients

2018 ◽  
Vol 49 (5) ◽  
pp. 868-875 ◽  
Author(s):  
Caitlyn Kruiper ◽  
Birgitte Fagerlund ◽  
Mette Ø. Nielsen ◽  
Signe Düring ◽  
Maria H. Jensen ◽  
...  
Keyword(s):  
Cognitive Deficits ◽  
Neuropsychological Test ◽  
Event Related Potentials ◽  
First Episode ◽  
Oddball Paradigm ◽  
Cognitive Measures ◽  
Auditory Oddball ◽  
Related Potentials ◽  
And Gender ◽  
First Episode Schizophrenia

AbstractBackgroundCognitive deficits are already present in early stages of schizophrenia. P3a and P3b event-related potentials (ERPs) are believed to underlie the processes of attention and working memory (WM), yet limited research has been performed on the associations between these parameters. Therefore, we explored possible associations between P3a/b amplitudes and cognition in a large cohort of antipsychotic-naïve, first-episode schizophrenia (AN-FES) patients and healthy controls (HC).MethodsSeventy-three AN-FES patients and 93 age- and gender-matched HC were assessed for their P3a/b amplitude with an auditory oddball paradigm. In addition, subjects performed several subtests from the Cambridge Neuropsychological Test Automated Battery (CANTAB).ResultsAN-FES patients had significantly reduced P3a/b amplitudes, as well as significantly lower scores on all cognitive tests compared with HC. Total group correlations revealed positive associations between P3b amplitude and WM and sustained attention and negative associations with all reaction time measures. These associations appeared mainly driven by AN-FES patients, where we found a similar pattern. No significant associations were found between P3b amplitude and cognitive measures in our HC. P3a amplitude did not correlate significantly with any cognitive measures in either group, nor when combined.ConclusionsOur results provide further evidence for P3a/b amplitude deficits and cognitive deficits in AN-FES patients, which are neither due to antipsychotics nor to disease progress. Furthermore, our data showed significant, yet weak associations between P3b and cognition. Therefore, our data do not supply evidence for deficient P3a/b amplitudes as direct underlying factors for cognitive deficits in schizophrenia.

scholarly journals Auditory Cognitive Function Assessment during Pregnancy: An Event-Related Potential and Neuropsychological Study

2021 ◽  
Vol 20 (3) ◽  
pp. 608-617
Author(s):  
Tahamina Begum ◽  
Faruque Reza
Keyword(s):  
Cognitive Function ◽  
Medical Science ◽  
Event Related Potentials ◽  
Positive Influence ◽  
Event Related Potential ◽  
Oddball Paradigm ◽  
Control Group ◽  
Hormonal Changes ◽  
Related Potentials ◽  
Function Assessment

Objectives: We investigated the auditory cognitive and behavioral functions during 2nd and 3rd trimesters of pregnancy using event-related potentials (ERPs) and different neuropsychology tests, respectively. Methods: The ERPs were studied by using a 128-sensor net, and PAS/COWA, WCST, ZCT, RAVLTIM/RAVLTDR/RAVLTTS, and BDI were tested for neuropsychology assessment. Total 39 subjects were recruited for control group (G1, n=15, non-pregnant), 2nd trimester group (G2, n=12, 13-26 weeks gestation), and 3rd trimester group (G3, n=12, 26- 40 weeks gestation). Auditory oddball paradigm was used during ERP study. Subjects silently counted only the target stimuli with attention by ignoring standard stimuli. Value of the mean differences of the target and standard stimuli were measured across groups in 10-20 electrode systems. Results: The P50, N100, and P300 ERP components were analyzed. The G3 (at F7 and C3) and G2 (at T4) groups evoked the highest significant amplitudes in P50, and G3 (at Cz and Pz) and G1 (at F8 and T4) evoked the highest significant amplitudes of N100 with significantly prolonged latencies at Cz and O1 (in G1) and F8 (in G2). However, significantly higher amplitudes of P300 were found at Fz (in G3) and FP1 (G2) (G2>G3). On the other hand, neuropsychology tests revealed that G2 possessed the highest significant score in WCST and G1 in ZCT. The G3 performed poorly in all tests. Conclusion: We concluded that pregnant groups performed better in auditory (attention/memory) and executive function assessment. Moreover, the 2nd trimester group has better auditory cognitive function compared to the 3rd trimester group due to the effect of hormonal changes during pregnancy, which might be a positive influence during the pregnancy period. Bangladesh Journal of Medical Science Vol.20(3) 2021 p.608-617

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