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Programming response duration in a precueing reaction time paradigm.

F Vidal1, M Bonnet, F Macar

  • 1Cognitive Neuroscience Unit, Laboratory of Functional Neurosciences, Centre National de la Recherche Scientifique, Marseille, France.

Journal of Motor Behavior
|December 1, 1991
PubMed
Summary
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Motor response duration can be pre-programmed up to 2,500 milliseconds. Relative response duration, not absolute, influences programming, with longer durations requiring additional programming steps when uncertain.

Area of Science:

  • Cognitive psychology
  • Motor control
  • Human movement science

Background:

  • Motor programs are sequences of muscle commands that generate movement.
  • The temporal characteristics of motor programs, such as duration, are not fully understood.
  • Investigating response duration's role in motor programming is crucial for understanding movement control.

Purpose of the Study:

  • To investigate if response duration is a prespecified component of motor programs.
  • To determine the limits of motor response duration programming.
  • To examine the influence of duration certainty on motor response programming.

Main Methods:

  • A precueing paradigm was used to study motor response duration and hand selection.
  • Participants performed short (200-700 ms) or long (700-2,500 ms) duration responses.

Related Experiment Videos

  • Reaction times (RTs) were measured under conditions of certain and uncertain response durations.

    • Main Results:

    • When response duration was uncertain, RTs were longer for long responses compared to short responses.
    • RTs for a 700-ms response were longer when its duration was uncertain within a wider range (200-700 ms) than a narrower range (700-2,500 ms).
    • Certainty of long response duration reduced RTs compared to complete uncertainty.

    Conclusions:

    • Response duration can be pre-programmed up to 2,500 ms.
    • Relative, rather than absolute, duration is more critical for motor programming.
    • Short response duration programming may serve as a default basis for longer responses, requiring additional steps when uncertainty is high.