Activity in the human primary motor cortex related to arm and finger movements

Ryuta Kawashima, Hiroshi Itoh, Shuichi Ono, Kazonori Satoh, Shozo Furumoto, Ryoui Gotoh, Masamichi Koyama, Seiro Yoshioka, Tsuneo Takahashi, Toru Yanagisawa, Hiroshi Fukuda

Research output: Contribution to journalArticlepeer-review

32 Citations (Scopus)

Abstract

With the purpose of mapping representations of the finger and proximal arm in the human primary motor cortex (MI), we measured regional cerebral blood flow (rCBF) in eight right-handed normal volunteers during self-paced finger and proximal arm movements. Each movement activated two different fields in MI, one located deep in the anterior lip of the central sulcus and the other relatively close to the surface of the precentral gyrus. Arm fields were located higher than finger fields. A superficial arm field and a deep finger field partially/ overlapped. The results indicate that there are two spatially separate motor representations of the finger and proximal arm in the human MI.

Original languageEnglish
Pages (from-to)238-240
Number of pages3
JournalNeuroReport
Volume6
Issue number2
DOIs
Publication statusPublished - 1995 Jan

Keywords

  • Human brain
  • Positron emission tomography(PET)
  • Primary motor cortex(MI)
  • Regional cerebral blood flow(rCBT)
  • Self–paced movement
  • Somatotopical organization

ASJC Scopus subject areas

  • Neuroscience(all)

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