Journal article
Peak alpha frequency: an electroencephalographic measure of cognitive preparedness
Clinical neurophysiology, v 115(4), pp 887-897
2004
PMID: 15003770
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Objective: Electroencephalographic (EEG) peak alpha frequency (PAF) (measured in Hz) has been correlated to cognitive performance between healthy and clinical individuals, and among healthy individuals. PAF also varies within individuals across developmental stages, among different cognitive tasks, and among physiological states induced by administration of various substances. The present study suggests that, among other things, PAF reflects a trait or state of cognitive preparedness.
Methods: Experiment 1 involved 19-channel EEG recordings from 10 individuals with traumatic brain injury (TBI) and 12 healthy matched controls, before, during, and after tasks of visual and auditory attention. Experiment 2 involved EEG recordings from 19 healthy young adults before and after a working memory task (WAIS-R Digit Span), repeated on 2 different days to measure within-individual differences.
Results: Experiment 1 showed significantly lower PAF in individuals with TBI, mostly during post-task rest. Experiment 2 showed PAF during pre-task baseline to be significantly correlated with Digit Span performance of the same day but not with Digit Span performance of another day. Moreover, PAF was significantly increased after Digit Span for those participants whose PAF was lower than the sample median before the task, but not for those who had it higher. Finally, both PAF and Digit Span performance were increased during the second day.
Conclusions: PAF was shown to detect both trait and state differences in cognitive preparedness, as well as to be affected by cognitive tasks. Traits are better reflected during post-task rest, whereas states are better reflected during initial resting baseline recordings.
Metrics
Details
- Title
- Peak alpha frequency: an electroencephalographic measure of cognitive preparedness
- Creators
- Efthymios Angelakis - Department of Psychology, Drexel University, MS 626, 245 N. 15th Street, Philadelphia, PA 19102-1192, USAJoel F Lubar - Department of Psychology, University of Tennessee, Knoxville, TN, USAStamatina Stathopoulou - Department of Psychology, Drexel University, MS 626, 245 N. 15th Street, Philadelphia, PA 19102-1192, USAJohn Kounios - Department of Psychology, Drexel University, MS 626, 245 N. 15th Street, Philadelphia, PA 19102-1192, USA
- Publication Details
- Clinical neurophysiology, v 115(4), pp 887-897
- Publisher
- Elsevier Ireland Ltd
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Psychological and Brain Sciences (Psychology)
- Web of Science ID
- WOS:000220414800021
- Scopus ID
- 2-s2.0-1442299157
- Other Identifier
- 991014878042004721
UN Sustainable Development Goals (SDGs)
This publication has contributed to the advancement of the following goals:
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Clinical Neurology
- Neurosciences