Early switching between movement types: Indication of predictive control?

S. Levy-Tzedek, M. Ben Tov, A. Karniel

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

In everyday life, we frequently alternate between performing discrete and rhythmic movements. When performing a periodic movement, two distinct movement types can be distinguished: highly harmonic vs. discrete-like. The harmonicity of the movement is used to classify it as one or the other. We asked: (1) whether the frequency at which a periodic movement is performed affects the harmonicity of the resultant movement; and (2) what underlies switching between these movement types. To answer these questions, we studied horizontal flexion/extension forearm movements in 13 young adults over a wide range of frequencies. Movements were performed either at a fixed frequency, or at gradually increasing or decreasing target frequencies. We found movement harmonicity to depend on the frequency of the movement. Furthermore, we found a reverse hysteresis behavior, where participants switched movement type in anticipation of the future-required frequency. These findings suggest that predictive control is employed in switching between movement types.

Original languageEnglish
Pages (from-to)283-288
Number of pages6
JournalBrain Research Bulletin
Volume85
Issue number5
DOIs
StatePublished - 30 Jun 2011

Keywords

  • Enhanced contrast
  • Motor control
  • Multistability
  • Predictive control
  • Reverse hysteresis
  • Transition

ASJC Scopus subject areas

  • Neuroscience (all)

Fingerprint

Dive into the research topics of 'Early switching between movement types: Indication of predictive control?'. Together they form a unique fingerprint.

Cite this