Research article summary (published 18 Sep 2002):

Processing of tactile and kinesthetic signals from bilateral sides of the body in the postcentral gyrus of awake monkeys.

Full Abstract

Earlier studies pointed out that in the primary somatosensory cortex (SI) the receptive fields (RF) of bilateral neurons were related exclusively to the body midline. We recently found a substantial number of neurons with bilateral RFs on hand digits, shoulders/arms or legs/feet in the caudalmost part (areas 2 and 5) of the postcentral gyrus in awake macaque monkeys. The RFs of these neurons were generally of the most complex types found in this region of the cortex, and thus they were considered to be at the highest level along the hierarchical chain of information processing. We conclude that there are two types of bilateral RFs in the postcentral gyrus, one representing the midline structures such as the intraoral cavity, chin or trunk and the other related to limb structures such as fingers, hands, arms, shoulders, legs and girdles. Functional significance of the bilateral activity could be understood in behavioral context as it is seen more extensively in the body parts where bilateral coordination is essential.

Author information

Author/s: Iwamura, Y (Y); Tanaka, M (M); Iriki, A (A); Taoka, M (M); Toda, T (T);

Affiliation: Department of Physiology, Toho University School of Medicine, 5-21-16 Omori-Nishi, Otaku, Tokyo 143-8540, Japan. iwayoshi(-atsign-)mw.kawasaki-m.ac.jp

Journal and publication information

Publication Type: Journal Article; Research Support, Non-U.S. Gov't; Review

Journal: Behavioural brain research (Behav Brain Res), published in Netherlands. (Language: eng)

Reference: 2002-Sep; vol 135 (issue 1-2) : pp 185-90

Dates: Created 2002/10/01; Completed 2002/11/25; Revised 2006/11/15;

PMID: 12356449, status: MEDLINE (last retrieval date: 2/18/2009, IMS Date: )

Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.

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MeSH headings (categories)

This article was linked to the MESH Headings shown below.

Animals Brain - physiology Corpus Callosum - physiology Fingers - innervation; physiology Functional Laterality - physiology

Haplorhini Kinesthesis - physiology Neural Pathways - physiology Touch - physiology Wakefulness - physiology

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