Adaptive plasticity in the primate spinal stretch reflex: reversal and re-development.

Abstract:

:Monkeys can gradually increase or decrease the amplitude of the segmentally mediated spinal stretch reflex (SSR) without change in initial muscle length or background EMG activity. Both increase (under the SSR increases mode) and decrease (under the SSR decreases mode) occur slowly, progressing steadily over weeks. The present study investigated reversal and re-development of SSR amplitude change. Over a period of months, following collection of control data, monkeys were exposed to one mode, then to the other, and then to the first mode again. Development, reversal, and re-development of change all took place over weeks, following very similar courses. These data are consistent with the hypothesis that persistent segmental alteration underlies SSR amplitude change. Such persistent segmental alteration would constitute a technically accessible substrate of memory.

journal_name

Brain Res

journal_title

Brain research

authors

Wolpaw JR

doi

10.1016/0006-8993(83)90259-7

subject

Has Abstract

pub_date

1983-11-14 00:00:00

pages

299-304

issue

1-2

eissn

0006-8993

issn

1872-6240

pii

0006-8993(83)90259-7

journal_volume

278

pub_type

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