Relationship between cerebral activity and movement frequency of maximal finger tapping

Naomi Kuboyama, Teru Nabetani, Kenichi Shibuya, Keishi Machida, Tetsuro Ogaki

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)

Abstract

To examine the cerebral activity of the motor cortex during maximum movement, we measured regional cerebral blood flow (rCBF) in twelve normal volunteers, using near infrared spectroscopy (NIRS). Repetitive tapping of the right index finger was performed at 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0, and 4.5 Hz, and during maximum effort (ME). The relative increase rate of rCBF during movement beginning with a resting condition was calculated for each movement condition. The left primary sensorimotor cortex showed significant activation during ME compared to the other frequencies. The rapid increase of rCBF was seen immediately after the initiation of finger tapping at all the tested frequencies but showed no increase following that. However, the rCBF during ME continued to increase until the end of the task. Change of the integrated electromyogram (iEMG) for the frequency and change of rCBF for the frequency at all the tested frequencies showed similar tendencies.

Original languageEnglish
Pages (from-to)201-208
Number of pages8
JournalJournal of physiological anthropology and applied human science
Volume24
Issue number3
DOIs
Publication statusPublished - May 2005

All Science Journal Classification (ASJC) codes

  • Social Sciences(all)

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