Gamma response of the brain: a multifunctional oscillation that represents bottom-up with top-down processing.
This paper deals with the functional correlates of the gamma response of the brain. A critical review of the literature findings reveals the existence of two types of gamma responses: an early gamma that fulfills sensory functions and a late gamma that fulfills perceptual-cognitive functions. However, even the early gamma shows individual differences. Such a finding points to the existence of top-down influences on sensory processes and to a parallel-processing model for brain function.
Karakaş
S
S
Hacettepe University Department of Experimental Psychology, Ankara, Turkey. skarakas@hacettepe.edu.tr
Başar-Eroglu
C
C
Ozesmi
C
C
Kafadar
H
H
Erzengin
O U
OU
D001921:Brain / Q000502:physiology*; D004569:Electroencephalography; D005071:Evoked Potentials; D006801:Humans; D008959:Models, Neurological