Age Peculiarities of Human Motor Control in Aging
作者:
N.B. Mankovsky,
A.Y. Mints,
V.P. Lisenyuk,
期刊:
Gerontology
(Karger Available online 1982)
卷期:
Volume 28,
issue 5
页码: 314-322
ISSN:0304-324X
年代: 1982
DOI:10.1159/000212548
出版商: S. Karger AG
关键词: Human motor control;Spontaneous movement;Muscle intentional activity;Electromyogram;Corticospinal influences
数据来源: Karger
摘要:
A clinicophysiological investigation of motor control was carried out in 199 apparently healthy, socially active elderly (aged 60–69 years) and long-living (90 years and over) subjects in order to establish the peculiarities of the motor sphere specific to age-related changes of the nervous system. Analyzing the experimentally induced state of readiness (intention) before a spontaneous movement, we found an increase with age in the latent period of the muscle intentional activity (IA) parallel to an increase in the latent period of the spontaneous movement, a decrease in IA amplitude with more frequent structural deviations of the EMG in the prestarting period and a reduction of the required IA selectiveness. The described changes in the organization of readiness for a spontaneous movement seemed to be related with age impairment of supraspinal (mainly corticospinal) influences and may be used for an explanation of a number of clinical peculiarities of human motor control in late ontogenesi
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