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Internal representations underlying respiration during object manipulation.

Eric M Lamberg1, Jason H Mateika, Lance Cherry

  • 1Department of Biobehavioral Sciences, Teachers College, Columbia University, 525 West 120th Street, New York, NY 10027, USA.

Brain Research
|August 14, 2003
PubMed
Summary
This summary is machine-generated.

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Anticipatory control adjusts motor and respiratory systems for predictable object lifts. When weight is unpredictable, the body defaults to heavier lift responses, suggesting a learned internal model guides these actions.

Area of Science:

  • Motor Control
  • Respiratory Physiology
  • Human Movement Science

Background:

  • Anticipatory control is crucial for efficient motor tasks.
  • Interactions between respiratory and motor systems are vital during object manipulation.
  • Understanding predictive mechanisms can reveal insights into sensorimotor integration.

Purpose of the Study:

  • To investigate anticipatory control in object manipulation.
  • To examine the interplay between respiratory and motor systems during lifting.
  • To determine how predictable versus unpredictable object weights influence motor and respiratory output.

Main Methods:

  • Subjects performed reaching, grasping, and lifting tasks with instrumented objects (150g and 1000g).
  • Breathing patterns, fingertip forces, and movements were measured.

Related Experiment Videos

  • Object weight predictability was manipulated by changing mass between blocks of lifts.

    • Main Results:

    • Predictable weight led to faster force application and reduced inspiratory duration/tidal volume for heavier lifts.
    • Unpredictable weight resulted in motor output reflecting prior lift weight, while respiratory output mimicked heavier lifts.
    • Inspiratory duration correlated with reach duration in unpredictable conditions.

    Conclusions:

    • Anticipatory alterations in motor and respiratory systems suggest a shared internal representation based on experience.
    • The body utilizes predictive control, adapting to learned object properties.
    • This study highlights the sophisticated integration of sensory information and motor planning.