Motivation dynamically increases noise resistance by internal feedback during movement.

ABSTRACT: Motivation improves performance, pushing us beyond our normal limits. One general explanation for this is that the effects of neural noise can be reduced, at a cost. If this were possible, reward would promote investment in resisting noise. But how could the effects of noise be attenuated, and why should this be costly? Negative feedback may be employed to compensate for disturbances in a neural representation. Such feedback would increase the robustness of neural representations to internal signal fluctuations, producing a stable attractor. We propose that encoding this negative feedback in neural signals would incur additional costs proportional to the strength of the feedback signal. We use eye movements to test the hypothesis that motivation by reward improves precision by increasing t

SUBMITTER: Manohar SG 

PROVIDER: S-EPMC6363982 | biostudies-literature | 2019 Feb

REPOSITORIES: biostudies-literature