To know or not to know: influence of explicit advance knowledge of occlusion on interceptive actions

This study examined how explicit advance knowledge might influence adaptive behavior to visual occlusions. Catching performance and kinematics of good ball catchers were compared between no, early and late occlusion trials. Discrete visual occlusions of 400 ms, occurring early or late in the ball’s...

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Bibliographic Details
Published in:Experimental brain research 2011-10, Vol.214 (4), p.483-490
Main Authors: Tijtgat, Pieter, Bennett, Simon J., Savelsbergh, Geert J. P., De Clercq, Dirk, Lenoir, Matthieu
Format: Article
Language:English
Subjects:
Adaptation, Physiological - physiology
Adaptations
Anticipation, Psychological - physiology
Biological and medical sciences
Biomedical and Life Sciences
Biomedicine
Brain research
Cerebral blood flow
Fundamental and applied biological sciences. Psychology
Grasping
Humans
Ischemia
Kinematics
Knowledge
Limbs
Male
Medical sciences
Motion Perception - physiology
Motor control and motor pathways. Reflexes. Control centers of vegetative functions. Vestibular system and equilibration
Neurology
Neurosciences
Ocular dominance
Physiological aspects
Psychomotor Performance - physiology
Reaction Time - physiology
Research Article
Sensory Deprivation - physiology
Vascular diseases and vascular malformations of the nervous system
Velocity
Vertebrates: nervous system and sense organs
Visual perception
Wrist
Young Adult
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Summary:This study examined how explicit advance knowledge might influence adaptive behavior to visual occlusions. Catching performance and kinematics of good ball catchers were compared between no, early and late occlusion trials. Discrete visual occlusions of 400 ms, occurring early or late in the ball’s approach trajectory, were randomly interspersed between no occlusion trials. In one condition, the presence and type of occlusion were announced a priori (expected), whereas in another condition no such information was provided (unexpected). Expectation of occlusion resulted in an adapted limb transport and increased grasping time, whereas in the unexpected condition a higher peak of wrist velocity was evident for all occlusion conditions. The observed different adaptations cannot be explained by trial-by-trial adaptations alone and instead provide evidence for the influence of explicit advance knowledge in the motor response of interceptive actions.
ISSN:0014-4819
1432-1106
DOI:10.1007/s00221-011-2846-1