Correlation dimension changes accompanying the occurrence of the mismatch negativity and the P3 event-related potential component

1995 ◽  
Vol 95 (2) ◽  
pp. 118-126 ◽  
Author(s):  
M. Molnár ◽  
J.E. Skinner ◽  
V. Csepe ◽  
I. Winkler ◽  
G. Karmos
Keyword(s):  
Mismatch Negativity ◽  
Correlation Dimension ◽  
Event Related Potential ◽  
Potential Component

scholarly journals No effect of different styles of mindfulness-based meditation on EEG auditory mismatch negativity in expert and novice practitioners

2021 ◽  
Author(s):  
Enrico Fucci ◽  
Arnaud Poublan-couzardot ◽  
Oussama Abdoun ◽  
Antoine Lutz
Keyword(s):  
Mismatch Negativity ◽  
Statistical Power ◽  
Mindfulness Meditation ◽  
Theoretical Models ◽  
Event Related Potential ◽  
Perceptual Inference ◽  
Attentional Processes ◽  
Oscillatory Power ◽  
Potential Component ◽  
The Impact

The auditory mismatch negativity (MMN) is a well characterized event-related potential component which has gained recent attention in theoretical models describing the impact of various styles of mindfulness meditation on attentional processes and perceptual inference. Previous findings highlighted a differential modulation of the MMN amplitude by meditation states and degrees of expertise. In the present study, we attempted to replicate results from the recent literature with a data sample that allowed for increased statistical power compared to previous experiments. Relying on traditional frequentist analysis, we found no effects of meditation states and expertise on the auditory MMN amplitude, non-replicating our previous work (Fucci et al., 2018). Using a Bayesian approach, we found strong evidence against an interaction effect on the MMN amplitude between expertise groups and meditation states and only moderate evidence in favour of a weak effect of expertise during focused attention practice. On the other hand, we replicated previous evidence of increased alpha oscillatory power during meditation practices compared to a control state. We discuss our null findings in relation to factors that could undermine the replicability of previous research on this subject, namely low statistical power, use of flexible analysis methods and a possible publication bias leading to a misrepresentation of the available evidence.

An Electrophysiological Measure of Temporal Resolution in Normal Subjects Using Frequency Modulated Signals

2002 ◽  
Vol 11 (1) ◽  
pp. 42-49
Author(s):  
Devin L. McCaslin ◽  
Lawrence L. Feth ◽  
Gary P. Jacobson ◽  
Pamela J. Mishler
Keyword(s):  
Temporal Resolution ◽  
Mismatch Negativity ◽  
Normal Subjects ◽  
Single Step ◽  
Event Related Potential ◽  
Frequency Range ◽  
Temporal Properties ◽  
Step Duration ◽  
The Mean ◽  
Modulated Signals

This investigation was conducted to determine whether an exogenous event-related potential called the mismatch negativity (MMN) would change systematically in response to frequency-modulated signals with varying temporal properties. Both N1 and P2 waveforms were recorded for 50-ms frequency-modulated signals from normal hearing listeners. The standard stimuli for this investigation were continuous sweep tones with center frequencies of 1000 Hz that traversed a frequency range of 200 Hz in a single step. The rare stimuli were signals that traversed the same frequency range in two, four, six, or eight discrete steps. Results suggest that for the 10 participants, 1) the mean MMN peak-to-peak amplitude and mean area decreased significantly with decreases in step duration, 2) MMN area amplitude was the best indicator of psychophysical performance for the two magnitude measures, and 3) MMN onsets and peak latencies did not show either a significant increase or decrease in latency as step duration decreased.

scholarly journals Longitudinal study of a NoGo-P3 event-related potential component following mild traumatic brain injury in adults

2018 ◽  
Vol 61 (1) ◽  
pp. 18-26 ◽  
Author(s):  
Gian Candrian ◽  
Andreas Müller ◽  
Patrizia Dall’Acqua ◽  
Kyveli Kompatsiari ◽  
Gian-Marco Baschera ◽  
...  
Keyword(s):  
Traumatic Brain Injury ◽  
Longitudinal Study ◽  
Brain Injury ◽  
Mild Traumatic Brain Injury ◽  
Event Related Potential ◽  
Potential Component

scholarly journals Stereotyping Among Graduate Students in Mental Health Fields: An EEG Study

2021 ◽  
Author(s):  
Wesley B. Webber ◽  
Firat Soylu ◽  
Joy J. Burnham
Keyword(s):  
Mental Health ◽  
Graduate Students ◽  
Black Men ◽  
White Women ◽  
Event Related Potential ◽  
Multicultural Awareness ◽  
Potential Component ◽  
Implicit Stereotyping ◽  
Diverse Groups ◽  
Behavioral Markers

Counselors are obligated to work effectively with diverse groups, yet human tendencies towards stereotyping and biases can impede counselors’ efforts. Understanding implicit social cognition and factors that might affect it is important because implicit stereotyping and biases can have effects in counselors’ work. In this study we hypothesized that graduate students in mental health fields would show indicators of stereotyping in an implicit experiment. The experiment utilized neural and behavioral dependent measures (N400 event-related potential component and reaction time) to indicate stereotyping. We also hypothesized that mindful observing and multicultural awareness would moderate stereotyping effects. Our first hypothesis was partially supported, as participants showed neural and behavioral markers of stereotyping towards black men and white women. Our hypotheses regarding moderators were not supported, as these stereotyping effects were not moderated by mindful observing or multicultural awareness. Implications for counseling practice and research are discussed.

scholarly journals Reactivation of a previous target location: a new event-related potential component

2017 ◽  
Vol 17 (10) ◽  
pp. 978
Author(s):  
Hayley Lagroix ◽  
Nadja Jankovic ◽  
Aaron Richardson ◽  
Kevin Boyd ◽  
Vincent Di Lollo ◽  
...  
Keyword(s):  
Target Location ◽  
Event Related Potential ◽  
Potential Component

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.

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