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This study found that dribbling a basketball with one hand did not enhance creative performance. However, brain imaging revealed distinct patterns of sensorimotor cortex activation during different hand movements.

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Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Motor Control

Background:

  • Previous research suggested unilateral hand movements could influence creative performance by altering hemispheric brain activity.
  • Specifically, left-hand movements were hypothesized to increase right-hemispheric activation, thereby boosting creativity.

Purpose of the Study:

  • To replicate and expand upon previous findings regarding the influence of unilateral hand movements on creative performance.
  • To investigate the effects of a more complex motor task (basketball dribbling) on creativity and brain activity.
  • To examine the relationship between sensorimotor cortex activation and creative performance.

Main Methods:

  • 43 right-handed participants performed basketball dribbling tasks using either their right or left hand.
  • Brain activity in the sensorimotor cortex was monitored using functional near-infrared spectroscopy (fNIRS).
  • Creative performance was assessed using verbal and figural divergent thinking tasks in a pre-/posttest design.

Main Results:

  • Basketball dribbling did not significantly modulate creative performance in participants.
  • Analysis of fNIRS data showed distinct patterns of sensorimotor cortex activation: higher left-hemisphere activation during right-hand dribbling and higher bilateral activation during left-hand dribbling.
  • Linear discriminant analysis indicated that sensorimotor activity data could accurately classify participants based on their dribbling hand.

Conclusions:

  • The study did not replicate the hypothesized link between unilateral hand movements and enhanced creative performance.
  • Novel insights were gained into the neuroplasticity and activation patterns within the sensorimotor cortex during complex, unilateral motor tasks.
  • The findings highlight the complexity of brain-behavior relationships in motor control and creativity.