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Publication Detail
Priming of motion direction and area V5/MT: a test of perceptual memory
  • Publication Type:
    Journal article
  • Publication Sub Type:
  • Authors:
    Campana G, Cowey A, Walsh V
  • Publication date:
  • Pagination:
    pp.663, 669
  • Journal:
    Cerebral Cortex
  • Volume:
  • Issue:
  • Print ISSN:
  • Keywords:
  • Notes:
    Imported via OAI, 15:41:43 19th Jul 2007
Presentation of supraliminal or subliminal visual stimuli that can (or cannot) be detected or identified can improve the probability of the same stimulus being detected over a subsequent period of seconds, hours or longer. The locus and nature of this perceptual priming effect was examined, using suprathreshold stimuli, in subjects who received repetitive pulse transcranial magnetic stimulation over the posterior occipital cortex, the extrastriate motion area V5/MT or the right posterior parietal cortex during the intertrial interval of a visual motion direction discrimination task. Perceptual priming observed in a control condition was abolished when area V5/MT was stimulated but was not affected by magnetic stimulation over striate or parietal sites. The effect of transcranial magnetic stimulation (TMS) on priming was specific to site (V5/MT) and to task — colour priming was unaffected by TMS over V5/MT. The results parallel, in the motion domain, recent demonstrations of the importance of macaque areas V4 and TEO for priming in the colour and form domains.
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