MOTOR SYSTEMSBrain activity during non-automatic motor production of discrete multi-second intervalsLewis, Penelope A.1 2 3 CA; Miall, R. Chris1 Author Information 1University Laboratory of Physiology 2Zoology Department Parks Road, Oxford, OX1 3PT 3School of Psychology, University of Birmingham, Birmingham, UK B15 2TT CA,1Corresponding Author: [email protected] Received 14 June 2002; accepted 19 July 2002 NeuroReport 13(14):p 1731-1735, October 7, 2002. Buy Abstract It has been suggested that the different patterns of brain activity observed during paced finger tapping and non-movement related timing tasks, with medial premotor cortex (supplementary motor cortex, pre and proper) and ipsilateral cerebellum dominating the former, and dorsolateral prefrontal cortex (DLPFC) the latter, might be related to differing motor demands. Since paced finger tapping often consists of automatic movement (requiring little overt attention), while non-motor timing is attentionally modulated, the difference could also be related to attentional processing. Here, we observed timing related activity in both medial premotor cortex and DLPFC, with non-timing related activity in other areas, including ipsilateral cerebellum, when subjects performed non-automatic motor timing. This result shows that, in time measurement, medial premotor activation is not specific to automatic movement, and DLPFC activity is not specific to non-motor tasks. © 2002 Lippincott Williams & Wilkins, Inc.