Abstract
This study reviews the available evidence on two brain potentials that have been proposed as correlates of paratory motor processes: the final component of the CNV (terminal CNV, late CNV, or E-wave) and the readiness protential, which precedes any voluntary movement. Both potentials are slow negative shifts that develop in the second or so befor the execution of a motor response. In addition to their simularity in form they appear to have the samje topographical distribution.