The frequency of visually induced gamma-band oscillations depends on the size of early human visual cortex

D. Samuel Schwartzkopf, David J. Robertson, Chen Song, Gareth R. Barnes, Geraint Rees

Research output: Contribution to journalArticle

44 Citations (Scopus)

Abstract

The structural and functional architecture of the human brain is characterized by considerable variability, which has consequences for visual perception. However, the neurophysiological events mediating the relationship between interindividual differences in cortical surface area and visual perception have, until now, remained unknown. Here, we show that the retinotopically defined surface areas of central V1 and V2 are correlated with the peak frequency of visually induced oscillations in the gamma band, as measured with magnetoencephalography. Gamma-band oscillations are thought to play an important role in visual processing. We propose that individual differences in macroscopic gamma frequency may be attributed to interindividual variability in the microscopic architecture of visual cortex.
Original languageEnglish
Pages (from-to)1507-1512
Number of pages6
JournalJournal of Neuroscience
Volume32
Issue number4
DOIs
Publication statusPublished - 25 Jan 2012

Keywords

  • visual processing
  • gamma band
  • visual cortex
  • cortical surface area
  • visual perception
  • gamma band oscillation

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