Reversal phenomenon in a simple motor task: Evidence for an indirect model

Nathaniel Leibowitz, Amir Karniel

Research output: Contribution to conferencePaperpeer-review

Abstract

When we first learn to control a cursor on the screen by means of a computer mouse the brain can either learn the mapping from the brain to the cursor as a whole (direct model) or count on knowledge of the mapping from the brain to hand and augment it with a learned mapping from the hand to the cursor (Indirect model). While the complete direct mapping involves complex nonlinear components arising from the body dynamics, we can set the hand to cursor mapping to be a simple linear transformation. We describe a simple cursor movement task carefully designed to reveal a clear reversal phenomenon in which trials that are a reversal of their predecessor, score higher than non reversal perpendicular trials. We suggest that this phenomenon is evidence of representation and learning of the hand to cursor mapping during the initial stage of learning the task, and discuss implications to brain machine interfaces.

Original languageEnglish
Pages90-93
Number of pages4
DOIs
StatePublished - 1 Dec 2005
Event2nd International IEEE EMBS Conference on Neural Engineering, 2005 - Arlington, VA, United States
Duration: 16 Mar 200519 Mar 2005

Conference

Conference2nd International IEEE EMBS Conference on Neural Engineering, 2005
Country/TerritoryUnited States
CityArlington, VA
Period16/03/0519/03/05

ASJC Scopus subject areas

  • Engineering (all)

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