The functional locus of the lateralized readiness potential

Hiroaki Masaki*, Nele Wild-Wall, Jörg Sangals, Werner Sommer

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

92 Citations (Scopus)


The lateralized readiness potential (LRP) is considered to reflect motor activation and has been used extensively as a tool in elucidating cognitive processes. In the present study, we attempted to more precisely determine the origins of the LRP within the cognitive system. The response selection and motor programming stages were selectively manipulated by varying symbolic stimulus response compatibility and the time to peak force of an isometric finger extension response. Stimulus response compatibility and time to peak force affected response latency, as measured in the electromyogram, in a strictly additive fashion. The effects of the experimental manipulations on stimulus- and response-synchronized LRPs indicate that the LRP starts after the completion of response-hand selection and at the beginning of motor programming. These results allow a more rigorous interpretation of LRP findings in basic and applied research.

Original languageEnglish
Pages (from-to)220-230
Number of pages11
Issue number2
Publication statusPublished - 2004 Mar


  • Functional locus
  • Lateralized readiness potential
  • Motor programming
  • Response selection

ASJC Scopus subject areas

  • General Neuroscience
  • Neuropsychology and Physiological Psychology
  • Experimental and Cognitive Psychology
  • Neurology
  • Endocrine and Autonomic Systems
  • Developmental Neuroscience
  • Cognitive Neuroscience
  • Biological Psychiatry


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