Attentional modulation of fMRI responses in human V1 is consistent with distinct spatial maps for chromatically defined orientation and contrast

Joo-Hyun Song, Jess Rowland, Robert M McPeek, Alex R Wade

Research output: Contribution to journalArticlepeer-review


Attending to different stimulus features such as contrast or orientation can change the pattern of neural responses in human V1 measured with fMRI. We show that these pattern changes are much more distinct for colored stimuli than for achromatic stimuli. This is evidence for a classic model of V1 functional architecture in which chromatic contrast and orientation are coded in spatially distinct neural domains, while achromatic contrast and orientation are not.
Original languageEnglish
Pages (from-to)12900-12905
Number of pages6
JournalJournal of neuroscience
Issue number36
Publication statusPublished - 7 Sept 2011


  • Adult
  • Attention
  • Brain Mapping
  • Color
  • Contrast Sensitivity
  • Female
  • Fixation, Ocular
  • Humans
  • Image Processing, Computer-Assisted
  • Magnetic Resonance Imaging
  • Male
  • Orientation
  • Photic Stimulation
  • Retina
  • Space Perception
  • Visual Cortex

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