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Science 6 June 1980:
Vol. 208. no. 4448, pp. 1165 - 1168
DOI: 10.1126/science.7375925
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Articles

Science, Vol 208, Issue 4448, 1165-1168
Copyright © 1980 by American Association for the Advancement of Science

articles

Synthesis of the contingent negative variation brain potential from noncontingent stimulus and motor elements

JW Rohrbaugh, K Syndulko, TF Sanquist, and DB Lindsley

Slow shifts in brain potential (commonly called the contingent negative variation), obtained during a warned reaction-time task with a foreperiod of 1 second, were compared with waveforms synthesized by the addition of separately obtained potentials associated with individual (nonpaired) sensory stimuli and self-initiated motor movements. The synthesized waveforms match closely the actual contingent negative variation, suggesting that it is constituted largely of separate, noncontingent elements related to sensory and motor processes.


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