@unpublished{cogprints3, title = {Experiments in Movement Using DC-EEG, MEG, SPECT and FMRI}, author = {Luder Deecke and W Lang and R Beisteiner and F Uhl and G Lindinger and R Q Cui}, publisher = {Smith-Gordon \& Co Ltd, London}, year = {1998}, pages = {53--60}, journal = {Current Progress in Functional Brain Mapping - Science andApplications}, url = {http://cogprints.org/3/}, abstract = {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. } }