Multiple gamma oscillations in the brain: A new strategy to differentiate functional correlates and P300 dynamics

Brain oscillations in the gamma frequency band, – i.e. oscillations greater than 25Hz – have attracted increasing attention over the last few decades in the research of sensory-cognitive processes. In the neuroscience research literature, a great number of reports aim to describe the functional corr...

Full description

Saved in:
Bibliographic Details
Published in:International journal of psychophysiology 2015-03, Vol.95 (3), p.406-420
Main Authors: Başar, Erol, Tülay, Elif, Güntekin, Bahar
Format: Article
Language:English
Subjects:
Adult
Analysis of Variance
Brain - physiology
EEG
Electroencephalography
ERSP
Event related oscillations
Event-Related Potentials, P300 - physiology
Female
Fourier Analysis
Gamma
Gamma Rhythm - physiology
Humans
ITC
Male
Nonlinear Dynamics
P300
Photic Stimulation
Statistics as Topic
Visual Perception - physiology
Young Adult
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Brain oscillations in the gamma frequency band, – i.e. oscillations greater than 25Hz – have attracted increasing attention over the last few decades in the research of sensory-cognitive processes. In the neuroscience research literature, a great number of reports aim to describe the functional correlates of oscillatory responses in the gamma frequency window. However, analysis using a broadband frequency window often leads to divergent functional interpretations and controversies. In order to provide a more exact approach, we have used a strategy by defining multiple frequency and multiple time windows according to the combined analysis of conventional power spectral windows, frequency adaptive multiple filters, and inter-trial coherence. The analysis in frequency windows of 25–30Hz, 30–35Hz, and 40–48Hz enables the investigator to provide a distinction of cognitive and/or sensory responses. Moreover, according to topological differentiation and the consideration of neuroanatomic pathways, more reliable interpretations of gamma responses are reached. •There are 3–4 phase/time-locked gamma responses in the frequency window of 25–45Hz.•We used a strategy by defining gamma multiple frequency and multiple time windows.•In the present report we described globally separated sensory and cognitive responses.
ISSN:0167-8760
1872-7697
DOI:10.1016/j.ijpsycho.2015.01.013