Experimental Brain Research

, Volume 7, Issue 2, pp 158–168 | Cite as

Distribution of readiness potential, pre-motion positivity, and motor potential of the human cerebral cortex preceding voluntary finger movements

  • Lüder Deecke
  • Peter Scheid
  • Hans H. Kornhuber


Potentials recorded from the scalp of human subjects preceding voluntary finger movements may be devided into 3 components:
  1. 1.

    a slowly increasing surface negative readiness potential which starts about 850 msec before movement and is bilaterally symmetrical over the pre- and post-central region with a maximum at the vertex;

  2. 2.

    a pre-motion positivity which is also bilaterally symmetrical and starts about 86 msec before the onset of EMG;

  3. 3.

    a surface negative motor potential which starts about 56 msec before the onset of movement in the EMG and has its maximum over the contralateral precentral hand area.


Key Words

Pre-motion cerebral potentials Readiness potential Pre-motion positivity Motor potential Man 


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Copyright information

© Springer-Verlag 1969

Authors and Affiliations

  • Lüder Deecke
    • 1
    • 2
  • Peter Scheid
    • 1
    • 2
    • 3
  • Hans H. Kornhuber
    • 1
    • 2
  1. 1.Abteilung für NeurologieUniversität UlmGermany
  2. 2.Neurologische Universitätsklinik mit Abt. für Neurophysiologie Freiburg i. Br.Germany
  3. 3.Max-PIanck-Institut für Experimentelle Medizin Abteilung PhysiologieGöttingenGermany

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