Motor awareness and dissociable levels of action representation

NEUROSCIENCE LETTERS

卷:494

Article

Serrien, Deborah J.¹  Spape, Michiel M.¹ 

[1] Univ Nottingham, Dept Psychol, Nottingham NG7 2RD, England

关键词: Tracking;    Perturbation;    Carry-over effects;   

DOI  :  10.1016/j.neulet.2011.02.077

来源: Elsevier

【 摘 要 】

The present study evaluated the performance of a tracking task during which no, a small (subliminal: 20 degrees) or a large (conscious: 60 degrees) rotational perturbation was implemented. The instantaneous as well as carry-over effects of the perturbations were assessed. The subjective reports revealed that the subjects did not discriminate between the 0 degrees and 20 degrees perturbation conditions, despite increased trajectory error and directional trajectory changes in the latter than former condition, which suggests augmented error processing and task monitoring. Conversely, the 60 degrees perturbation condition was characterized by subjective awareness in association with objective performance changes. Furthermore, a carry-over effect for the 60 degrees but not for the 20 degrees perturbation was observed when the distortion was removed midway into the trajectory. Together, the data underline distinct functioning of motor control and motor awareness with implications across time scales. (C) 2011 Elsevier Ireland Ltd. All rights reserved.

【 授权许可】

Free