Visuomotor representations
Date
2005-11
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
ORCID
Type
Degree Level
Masters
Abstract
The contribution of ventral stream information to the variability of movement has been
the focus of much attention, and has provided numerous researchers with conflicting
results. These results have been obtained through the use of discrete pointing
movements, and as such, do not offer any explanation regarding how ventral stream
information contributes to movement variability over time. The present study examined
the contribution of ventral stream information to movement variability in three tasks:
Hand-only movement, eye-only movement, and an eye-hand coordinated task.
Participants performed a continuous reciprocal tapping task to two point-of-light targets
for 10 seconds. The targets were visible for the first five seconds, at which point vision
of both the targets and the limb was occluded by liquid crystal goggles. Movement
variability was similar in all conditions for the initial 5-second interval. The no-vision
condition (final 5-seconds) can be summarized as follows: Ventral stream information
contributed to an initial significant increase in variability across motor systems, though
the different motor systems were able to preserve ventral information integrity
differently. The results of these studies can be attributed to the behavioural and
cognitive mechanisms that underlie the saccadic and manual motor systems.
Description
Keywords
Citation
Degree
Master of Science (M.Sc.)
Department
College of Kinesiology
Program
College of Kinesiology