Pattern-motion responses in human visual cortex

Nat Neurosci. 2002 Jan;5(1):72-5. doi: 10.1038/nn774.

Abstract

Physiological models of visual motion processing posit that 'pattern-motion cells' represent the direction of moving objects independent of their particular spatial pattern. We performed fMRI experiments to identify neuronal activity in the human brain selective for pattern motion. A protocol using adaptation to moving 'plaid' stimuli allowed us to separate pattern-motion responses from other types of motion-related activity within the same brain structures, and revealed strong pattern-motion selectivity in human visual area MT+. Reducing the perceptual coherence of the plaids yielded a corresponding decrease in pattern-motion responsivity, providing evidence that percepts of coherent motion are closely linked to the activity of pattern-motion cells in human MT+.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Adult
  • Brain Mapping
  • Humans
  • Magnetic Resonance Imaging
  • Male
  • Motion Perception / physiology*
  • Neuropsychological Tests
  • Pattern Recognition, Visual / physiology*
  • Photic Stimulation
  • Visual Cortex / cytology
  • Visual Cortex / physiology*