Lack of age effects on human brain potentials preceding voluntary movements.

Abstract:

:We examined age effects on Movement related potentials (MRPs) in 13 young (mean age = 29.3 years) and 13 old (mean age = 67.2 years) normal adults in right, left and bimanual self-paced button press conditions. Both the groups generated a slowly rising readiness potential (RP) at about 1000 ms, a negative shift (NS') at about 450 ms and a motor potential (MP) at about 100 ms prior to movement. The RP was symmetrical, bilaterally distributed and maximal at the vertex in all conditions in both the groups. Both the groups produced contralaterally enhanced NS' and MP components in unimanual conditions. In contrast to prior reports, topographical distribution, onset latency and mean amplitude were comparable between young and old subjects for the RP, NS' and MP components of the MRP. The results indicate that motor programming as indexed by MRPs is unaffected by normal aging.

journal_name

Neurosci Lett

journal_title

Neuroscience letters

authors

Singh J,Knight RT,Woods DL,Beckley DJ,Clayworth C

doi

10.1016/0304-3940(90)90747-w

subject

Has Abstract

pub_date

1990-10-30 00:00:00

pages

27-31

issue

1

eissn

0304-3940

issn

1872-7972

pii

0304-3940(90)90747-W

journal_volume

119

pub_type

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