Neural Correlates of Reaching Decisions in Dorsal Premotor Cortex: Specification of Multiple Direction Choices and Final Selection of Action

  title={Neural Correlates of Reaching Decisions in Dorsal Premotor Cortex: Specification of Multiple Direction Choices and Final Selection of Action},
  author={Paul Cisek and John F. Kalaska},

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A computational model of reach decisions in the primate cerebral cortex

  • P. Cisek
  • Biology, Psychology
    Proceedings. 2005 IEEE International Joint Conference on Neural Networks, 2005.
  • 2005
A formal computational model is presented which demonstrates how partial specification of several potential movement directions, and the selection of the correct movement, can occur in populations of directionally tuned cells in a distributed cortical network including posterior parietal, premotor, prefrontal, and primary motor cortex.

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Different Representations of Potential and Selected Motor Plans by Distinct Parietal Areas

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Simultaneous encoding of multiple potential reach directions in dorsal premotor cortex.

The results suggest that, when faced with multiple salient opportunities for reaching, the primate brain performs sensorimotor transformations in parallel to begin planning several reaching movements simultaneously before selecting one for overt execution.

Microstimulation of visual cortex affects the speed of perceptual decisions

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It is suggested that PFC neurons store the direction of memory-guided saccades during a delay period before eye movement and that the same neurons may be involved in the decision-making process that underlies the selection of the saccade direction during the MC period.

Monkey primary motor and premotor cortex: single-cell activity related to prior information about direction and extent of an intended movement.

Behavioral data support a parametric conception of motor programming, i.e., that the programming of the different movement parameters results from assembling separate processes of different duration, compatible with the model in which programming processes are serially and hierachically ordered.

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