Chapter 3 Covert attention increases contrast sensitivity: psychophysical, neurophysiological and neuroimaging studies

Marisa Carrasco

Research output: Contribution to journalReview articlepeer-review

Abstract

This chapter focuses on the effect of covert spatial attention on contrast sensitivity, a basic visual dimension where the best mechanistic understanding of attention has been achieved. I discuss how models of contrast sensitivity, as well as the confluence of psychophysical, single-unit recording, and neuroimaging studies, suggest that attention increases contrast sensitivity via contrast gain, an effect akin to a change in the physical contrast stimulus. I suggest possible research directions and ways to strengthen the interaction among different levels of analysis to further our understanding of visual attention.

Original languageEnglish (US)
Pages (from-to)33-70
Number of pages38
JournalProgress in Brain Research
Volume154
Issue numberSUPPL. A
DOIs
StatePublished - 2006

Keywords

  • contrast sensitivity
  • early vision
  • neuroimaging
  • neurophysiology
  • psychophysics
  • visual attention

ASJC Scopus subject areas

  • Neuroscience(all)

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