Baseline shifts do not predict attentional modulation of target processing during feature-based visual attention

Sean P. Fannon, Clifford D. Saron, George R Mangun

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

Cues that direct selective attention to a spatial location have been observed to increase baseline neural activity in visual areas that represent a to-be-attended stimulus location. Analogous attention-related baseline shifts have also been observed in response to attention-directing cues for non-spatial stimulus features. It has been proposed that baseline shifts with preparatory attention may serve as the mechanism by which attention modulates the responses to subsequent visual targets that match the attended location or feature. Using functional MRI, we localized color- and motion-sensitive visual areas in individual subjects and investigated the relationship between cue-induced baseline shifts and the subsequent attentional modulation of task-relevant target stimuli. Although attention-directing cues often led to increased background neural activity in feature specific visual areas, these increases were not correlated with either behavior in the task or subsequent attentional modulation of the visual targets. These findings cast doubt on the hypothesis that attention-related shifts in baseline neural activity result in selective sensory processing of visual targets during feature-based selective attention.

Original languageEnglish (US)
Article number7
JournalFrontiers in Human Neuroscience
Volume1
Issue numberMAR
DOIs
StatePublished - Mar 28 2008

Keywords

  • Baseline shift
  • fMRI
  • MT
  • Selective attention
  • V4
  • V8
  • Visual cortex
  • Visual feature

ASJC Scopus subject areas

  • Psychiatry and Mental health
  • Neurology
  • Biological Psychiatry
  • Behavioral Neuroscience
  • Neuropsychology and Physiological Psychology

Fingerprint Dive into the research topics of 'Baseline shifts do not predict attentional modulation of target processing during feature-based visual attention'. Together they form a unique fingerprint.

Cite this