Adaptation to delayed force perturbations in reaching movements

Noa Levy, Assaf Pressman, Ferdinando A. Mussa-Ivaldi, Amir Karniel

Research output: Contribution to journalArticlepeer-review

19 Scopus citations


Adaptation to deterministic force perturbations during reaching movements was extensively studied in the last few decades. Here, we use this methodology to explore the ability of the brain to adapt to a delayed velocity-dependent force field. Two groups of subjects preformed a standard reaching experiment under a velocity dependent force field. The force was either immediately proportional to the current velocity (Control) or lagged it by 50 ms (Test). The results demonstrate clear adaptation to the delayed force perturbations. Deviations from a straight line during catch trials were shifted in time compared to post-adaptation to a non-delayed velocity dependent field (Control), indicating expectation to the delayed force field. Adaptation to force fields is considered to be a process in which the motor system predicts the forces to be expected based on the state that a limb will assume in response to motor commands. This study demonstrates for the first time that the temporal window of this prediction needs not to be fixed. This is relevant to the ability of the adaptive mechanisms to compensate for variability in the transmission of information across the sensory-motor system.

Original languageEnglish
Article numbere12128
JournalPLoS ONE
Issue number8
StatePublished - 19 Oct 2010

ASJC Scopus subject areas

  • General Biochemistry, Genetics and Molecular Biology
  • General Agricultural and Biological Sciences
  • General


Dive into the research topics of 'Adaptation to delayed force perturbations in reaching movements'. Together they form a unique fingerprint.

Cite this