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Drifting population dynamics with transient resets characterize sensorimotor transformation in the monkey superior
Michelle R Heusser1,2, Uday K Jagadisan1,2, Neeraj J Gandhi1,3,2
1Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA, USA.
Biorxiv : the Preprint Server for Biology
|January 30, 2023
Summary
Researchers studied sensorimotor transformation in monkeys, finding that neural activity shifts towards motor preparation during delay periods. This shift, especially after microsaccades, may speed up eye movement initiation.
Area of Science:
- Neuroscience
- Systems Neuroscience
- Computational Neuroscience
Background:
- Goal-directed eye movements (saccades) rely on sensorimotor transformation, a process not fully understood at the neural level.
- The superior colliculus (SC) plays a key role in sensorimotor transformation, with neurons exhibiting activity during both sensory and motor phases.
Conclusions:
- Sensorimotor transformation involves a dynamic shift in neural representations within the SC.
- Microsaccades may play a role in resetting or modulating this visual-to-motor drift.
- The findings support the conservation of movement initiation mechanisms across different motor systems.
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