Arrangement of orientation pinwheel centers around area 17/18 transition zone in cat visual cortex

Kenichi Ohki, Yoshitaka Matsuda, Ayako Ajima, Dae Shik Kim, Shigeru Tanaka

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

In the primary visual cortex of higher mammals, orientation preferences are represented continuously except for singular points, so-called pinwheel centers. In spite of the uniqueness of orientation pinwheel centers, very little is known about the pattern of their arrangement. In this study we examined the arrangement of orientation pinwheel centers in the cat visual cortex by optical imaging of intrinsic signals. Our results demonstrate that orientation pinwheel centers are arranged in a unique geometric pattern around the area 17/18 transition zone: pinwheel centers of the same type are arranged in rows parallel to the transition zone, and rows of clockwise and counterclockwise pinwheel centers are arranged alternately. We suggest that the areal border imposes a strong restriction on the pattern formation of orientation preference maps in the visual cortex.

Original languageEnglish
Pages (from-to)593-601
Number of pages9
JournalCerebral Cortex
Volume10
Issue number6
DOIs
Publication statusPublished - Jun 2000

All Science Journal Classification (ASJC) codes

  • Cognitive Neuroscience
  • Cellular and Molecular Neuroscience

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