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Related Experiment Videos

Persistence in visual feedback control by the elderly

R D Seidler-Dobrin1, G E Stelmach

  • 1Motor Control Laboratory, Arizona State University, Tempe, USA.

Experimental Brain Research
|May 20, 1998
PubMed
Summary
This summary is machine-generated.

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Elderly individuals do not improve their motor control with practice as younger adults do. Extended practice does not reduce the elderly

Area of Science:

  • Motor control
  • Human aging
  • Neuroplasticity

Background:

  • Age-related changes in motor control are significant.
  • Understanding how practice affects motor learning in older adults is crucial.

Purpose of the Study:

  • To investigate if elderly individuals reduce reliance on visual feedback after practice.
  • To compare motor learning and adaptation between young and elderly subjects.

Main Methods:

  • Subjects performed aiming movements using a manipulandum.
  • Visual feedback (cursor) was removed unpredictably to assess reliance on vision.
  • Movements were analyzed into primary (ballistic) and secondary (corrective) submovements.
  • Performance was compared before and after extensive practice.

Related Experiment Videos

Main Results:

  • Both groups initially showed decreased primary submovement, increased secondary submovement, and reduced accuracy when vision was removed.
  • Young subjects extended primary submovement distance and became less affected by vision removal after practice.
  • Elderly subjects did not lengthen primary submovement or reduce vision dependency after practice.

Conclusions:

  • Young adults improve motor program control with practice, reducing reliance on visual feedback.
  • Elderly adults do not show similar improvements in motor program control with practice.
  • A greater proportion of elderly movements continue to require corrective adjustments, unlike younger adults.