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URN: urn:nbn:de:swb:90-419128

Catch trials in force field learning influence adaptation and consolidation of human motor memory

Stockinger, C.; Focke, A.; Stein, T.

Abstract:
Thereby, subjects usually adapt their reaching movements to force field perturbations induced by a robotic device. In this context, so-called catch trials, in which the disturbing forces are randomly turned off, are commonly used to detect after-effects of motor adaptation. However, catch trials also produce sudden large motor errors that might influence the motor adaptation and the consolidation process. Yet, the detailed influence of catch trials is far from clear. Thus, the aim of this study was to investigate the influence of catch trials on motor adaptation and consolidation in force field experiments. Therefore, 105 subjects adapted their reaching movements to robot-generated force fields. The test groups adapted their reaching movements to a force field A followed by learning a second interfering force field B before retest of A (ABA). The control groups were not exposed to force field B (AA). To examine the influence of diverse catch trial ratios, subjects received catch trials during force field adaptation with a probability of either 0, 10, 20, 30, or 40%, depending on the group. First, the results on motor adaptation reve ... mehr


Zugehörige Institution(en) am KIT Institut für Sport und Sportwissenschaft (IfSS)
Publikationstyp Zeitschriftenaufsatz
Jahr 2014
Sprache Englisch
Identifikator ISSN: 1662-5161
KITopen ID: 1000041912
Erschienen in Frontiers in Human Neuroscience
Band 8
Seiten 231
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfonds
Schlagworte reaching movements, dynamic perturbation, intermittent practice, variability, interference, internal model formation, control strategy, robotic manipulandum
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