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Effects of aging on action-intentional programming.

Ali R Shoraka1,2, Dana M Otzel1, Eduardo M Zilli2

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Summary
This summary is machine-generated.

Healthy aging affects motor control, specifically slowing left-hand initiation and impairing response inhibition. These changes may stem from altered brain communication between hemispheres.

Keywords:
Cognitive agingaction-intentionbrain aginginterhemispheric disconnectionmotor control

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Area of Science:

  • Neuroscience
  • Motor Control
  • Cognitive Aging

Background:

  • Action-intentional programs govern the initiation, inhibition, continuation, and cessation of motor actions.
  • Understanding age-related changes in these programs is crucial for cognitive neuroscience.
  • Investigating asymmetry and interhemispheric communication in aging is key.

Purpose of the Study:

  • To determine if healthy aging alters the action-intentional system.
  • To assess if these alterations are asymmetrical between the right and left upper limbs.
  • To explore the relationship between these changes and impaired interhemispheric communication.

Main Methods:

  • 41 middle-aged and older adults participated in the study.
  • Tests of action-intention were administered to assess motor control.
  • Regression analyses were used to identify age-related effects.

Main Results:

  • Older age was associated with decreased performance in crossed motor response inhibition.
  • Slower motor initiation was observed with the left hand in older adults.
  • Findings suggest potential asymmetry in age-related motor control changes.

Conclusions:

  • Age-related changes in action-intention may involve altered interhemispheric communication.
  • Right hemisphere dysfunction in aging could contribute to observed motor control deficits.
  • Further research is necessary to elucidate the precise neural mechanisms underlying these age-related changes.