“…Since Kornhuber and Deecke (1965) recorded the Bereitschaftspotential (BP) or readiness potential (RP), related to simple and self-paced movements, several studies have been carried out in which four MRCPs have consistently been recorded: the first component of the readiness potential (1st-RP), the negative slope (NS'), the motor potential (MP) and the reafferent potential (RAP) (for a complete revision, see Shibasaki and Hallett, 2006). On the other hand, the speech MRCPs have been less well studied, and there is only conclusive data regarding the 1st-RP component (Brooker and Donald, 1980;Deecke et al, 1986;Grabow and Elliott, 1974;Grözinger et al, 1975Grözinger et al, , 1977Levy, 1977;McAdam and Whitaker, 1971;Tarkka, 2001;Wohlert, 1993;Wohlert and Larson, 1991).…”