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TY - UNPB ID - cogprints3 UR - http://cogprints.org/3/ A1 - Deecke, Luder A1 - Lang, W A1 - Beisteiner, R A1 - Uhl, F A1 - Lindinger, G A1 - Cui, R Q Y1 - 1998/// N2 - Our volitional self-initiated acts are preceded by the Bereitschaftspotential (BP) or readiness potential [34,35]. The BP has an early component (BP1) and a late component (BP2, see Fig. 1). The early component BP1 lasts from the very beginning of the BP (1-2 s or more prior to movement onset depending on the complexity of the movement) to app. � s prior to movement onset and the late component BP2 lasts from � s before to the onset of movement itself (s 0 in Fig. 1). BP1 is symmetrical even for unilateral movement, while BP2 is larger over the contralateral hemisphere. PB - Smith-Gordon & Co Ltd, London TI - Experiments in Movement Using DC-EEG, MEG, SPECT and FMRI SP - 53 AV - public EP - 60 ER -