Studies of Squeezing: Handedness, Responding Hand, Response Force, and Asymmetry of Readiness Potential

@article{Kutas1974StudiesOS,
  title={Studies of Squeezing: Handedness, Responding Hand, Response Force, and Asymmetry of Readiness Potential},
  author={Marta Kutas and Emanuel Donchin},
  journal={Science},
  year={1974},
  volume={186},
  pages={545 - 548}
}
Eleven subjects squeezed an electronic dynamometer, at each of three force levels, with both their right and left hands. In right-handed subjects the premovement "readiness" potentials were larger over the hemisphere contralateral to the responding hand. Left-handed subjects show contralateral dominance when responding with the right hand but not when responding with the left hand. The data suggest that in the potentials studied there is a component associated with the preparation to perform a… 
TO RESPOND AS MANIFESTED BY MOVEMENT-RELATED BRAIN POTENTIALS
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It is concluded that the appearance and asymmetry of event-preceding negative potentials reflect preparation to execute specific motor acts.
Movement-related brain potentials during hand squeezing in children and adults.
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Dominant squeezes showed the greatest MRP positivity followed by non-dominant and bilateral squeezes, and motor control followed an inverse order across tasks; as motor control increased, positivity decreased.
Effects of Unilateral Hand Contraction on The Persistence of Hemispheric Asymmetry of Cortical Activity
TLDR
It is suspected that squeezing a ball strongly for a long period might be helpful in dealing with “choking” under pressure by producing greater right-hemispheric activation, which could help improve simple methods for competitive athletes to reduce the likelihood of exhibiting choking behavior.
Handedness results from complementary hemispheric dominance, not global hemispheric dominance: evidence from mechanically coupled bilateral movements.
TLDR
The results indicate a hand by task-component interaction such that the right hand showed straighter reaching performance whereas the left hand showed more stable holding performance, providing support for the complementary dominance hypothesis and suggesting that the specializations of each cerebral hemisphere for impedance and dynamic control mechanisms are expressed during bilateral interactive tasks.
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