Lack of age effects on human brain potentials preceding voluntary movements

Jaswinder Singh, Robert T. Knight, David L Woods, Dennis J. Beckley, Clay Clayworth

Research output: Contribution to journalArticle

17 Scopus citations

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.

Original languageEnglish (US)
Pages (from-to)27-31
Number of pages5
JournalNeuroscience Letters
Volume119
Issue number1
DOIs
StatePublished - Oct 30 1990

Keywords

  • Aging
  • Bereitschaftspotential
  • Movement-related potential
  • Readiness potential
  • Supplementary motor area

ASJC Scopus subject areas

  • Neuroscience(all)

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