Gamma response of the brain: a multifunctional oscillation that represents bottom-up with top-down processing

Karakas S., Basar-Eroglu C., Ozesmi C., Kafadar H., Erzengin O.

INTERNATIONAL JOURNAL OF PSYCHOPHYSIOLOGY, vol.39, pp.137-150, 2001 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 39
  • Publication Date: 2001
  • Doi Number: 10.1016/s0167-8760(00)00137-9
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Social Sciences Citation Index (SSCI), Scopus
  • Page Numbers: pp.137-150
  • Istanbul Technical University Affiliated: No


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. (C) 2001 Elsevier Science B.V. All rights reserved.