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

Emi Takahashi, Kenichi Oki, Dae Shik Kim

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)488-498
Number of pages11
JournalNeuroImage
Volume65
DOIs
Publication statusPublished - Jan 15 2013

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Prefrontal Cortex
Short-Term Memory
Parietal Lobe
Temporal Lobe
Diffusion Magnetic Resonance Imaging
Visual Pathways
Visual Cortex
Primates
Brain

All Science Journal Classification (ASJC) codes

  • Neurology
  • Cognitive Neuroscience

Cite this

Dissociation and convergence of the dorsal and ventral visual working memory streams in the human prefrontal cortex. / Takahashi, Emi; Oki, Kenichi; Kim, Dae Shik.

In: NeuroImage, Vol. 65, 15.01.2013, p. 488-498.

Research output: Contribution to journalArticle

Takahashi, Emi ; Oki, Kenichi ; Kim, Dae Shik. / Dissociation and convergence of the dorsal and ventral visual working memory streams in the human prefrontal cortex. In: NeuroImage. 2013 ; Vol. 65. pp. 488-498.
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