Dissociation and convergence of the dorsal and ventral visual working memory streams in the human prefrontal cortex

Emi Takahashi, Kenichi Ohki, Dae Shik Kim

研究成果: Contribution to journalArticle査読

32 被引用数 (Scopus)

抄録

Visual information is largely processed through two pathways in the primate brain: an object pathway from the primary visual cortex to the temporal cortex (ventral stream) and a spatial pathway to the parietal cortex (dorsal stream). Whether and to what extent dissociation exists in the human prefrontal cortex (PFC) has long been debated. We examined anatomical connections from functionally defined areas in the temporal and parietal cortices to the PFC, using noninvasive functional and diffusion-weighted magnetic resonance imaging. The right inferior frontal gyrus (IFG) received converging input from both streams, while the right superior frontal gyrus received input only from the dorsal stream. Interstream functional connectivity to the IFG was dynamically recruited only when both object and spatial information were processed. These results suggest that the human PFC receives dissociated and converging visual pathways, and that the right IFG region serves as an integrator of the two types of information.

本文言語英語
ページ(範囲)488-498
ページ数11
ジャーナルNeuroImage
65
DOI
出版ステータス出版済み - 1 15 2013

All Science Journal Classification (ASJC) codes

  • 神経学
  • 認知神経科学

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