Conscious control of movements: increase of temporal precision in voluntarily delayed actions?

• Authors: E. Szelag , K. Rymarczyk , E. Poppel
• Languages of publication: EN

Abstracts

EN

The variability of simple actions with response to auditory stimuli was studied under different delay conditions. Subjects reacted as fast as possible or with a defined time delay (from 250 to 750 ms) to a tone switching off by pressing a response-key with the left index finger (controlled by the right hemisphere) or with the right one (left hemisphere). For short delays (requested response times below 350 ms) variability of responses was much larger then for longer delays (above 350 ms), especially for the right hand. Thus, precise temporal control on consciously mediated actions sets only in after a rather long delay (in some cases after half a second). Neuronal mechanisms underlying conscious temporal control of actions appear to be different for the two hemispheres.

Keywords

EN

ATTENTION; HEMISPHERIC ASYMMETRY; MOVEMENT; TEMPORAL SEGMENTATION

Discipline

• EXPERIMENTAL_BIOLOGY_&_MEDICINE: EXPERIMENTAL BIOLOGY & MEDICINE

• Publisher: Marceli Nencki Institute of Experimental Biology, Polish Academy of Sciences
• Journal: Acta Neurobiologiae Experimentalis
• Year: 2001
• Volume: 61
• Issue: 3
• Pages: 175-179

Contributors

author

E. Szelag

author

K. Rymarczyk

author

E. Poppel

• Document Type: ARTICLE
• Publication order reference: E. Szelag, Department of Neurophysiology, Nencki Institute of Experimental Biology, 3 Pasteur Street, 02-093 Warsaw, Poland