Population receptive field dynamics in human visual cortex

Koen V Haak, Frans W Cornelissen, Antony B Morland

Research output: Contribution to journalArticleScientificpeer-review

Abstract

Seminal work in the early nineties revealed that the visual receptive field of neurons in cat primary visual cortex can change in location and size when artificial scotomas are applied. Recent work now suggests that these single neuron receptive field dynamics also pertain to the neuronal population receptive field (pRF) that can be measured in humans with functional magnetic resonance imaging (fMRI). To examine this further, we estimated the pRF in twelve healthy participants while masking the central portion of the visual field. We found that the pRF changes in location and size for two differently sized artificial scotomas, and that these pRF dynamics are most likely due to a combination of the neuronal receptive field position and size scatter as well as modulatory feedback signals from extrastriate visual areas.

Original languageEnglish
Pages (from-to)e37686
JournalPLOS ONE
Volume7
Issue number5
DOIs
Publication statusPublished - 2012

Keywords

  • Humans
  • Magnetic Resonance Imaging
  • Photic Stimulation
  • Photoreceptor Cells, Vertebrate/physiology
  • Scotoma/physiopathology
  • Visual Cortex/physiology
  • Visual Fields/physiology

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