Event-related brain potentials isolate the motor component in a tapping task

Corby L. Dale, Gabriele Gratton, John Gibbon

Research output: Contribution to journalArticlepeer-review

Abstract

Repetitive tapping is used to investigate temporal perception, memory, and reproduction. Intertap intervals and their variability, arise from cognitive and motor processes during the task. We used a measure of readiness potential onset to determine motor component latency during the timed interval. Subjects performed a paced, two-handed tapping task at four target intervals (1.5-2.75 s). Overall latency of production increased with increasing ISI, as did variability across target interval, conforming to a generalized Weber's law. In contrast, average motor latency was roughly 0.5s across ISI. This constant motor latency may also indicate constant variability attributable to motor processing.

Original languageEnglish (US)
Pages (from-to)3015-3018
Number of pages4
JournalNeuroreport
Volume12
Issue number14
DOIs
StatePublished - Oct 8 2001

Keywords

  • Readiness potential
  • Time estimation
  • Time production

ASJC Scopus subject areas

  • Neuroscience(all)

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