Citation

Sanegre MT, Castellote JM, Haggard P, Valls-Solé J. Exp. Brain Res. 2004; 155(4): 527-531.

Affiliation

Unitat d'EMG, Servei de Neurologia, Hospital Clínic, Departament de Medicina, Universitat de Barcelona, IDIBAPS (Institut d'Investigació Biomèdica August Pi i Sunyer), Barcelona, Spain.

Copyright

(Copyright © 2004, Holtzbrinck Springer Nature Publishing Group)

DOI

10.1007/s00221-004-1849-6

PMID

14997258

Abstract

The execution of a ballistic movement within a reaction time task paradigm is significantly speeded up when an unexpected startling auditory stimulus (SAS) is delivered together with the imperative signal. Using Libet's clock, we investigated whether acceleration involves also the subjective appraisal of the time of task execution. In trials containing the SAS, reaction time shortened to 68.7% of control values. However, subjective judgment of task execution remained a similar time with respect to the imperative signal as in control trials. The dissociation between task execution and its subjective perception indicates the existence of separate circuits for action execution and action awareness.

Language: en