Temporal Evolution of Spatial Computations for Visuomotor Control.
Temporal evolution of visuomotor control
The Journal of Neuroscience
Society for Neuroscience
MetadataShow full item record
Franklin, D., Reichenbach, A., Franklin, S., & Diedrichsen, J. (2016). Temporal Evolution of Spatial Computations for Visuomotor Control.. The Journal of Neuroscience, 36 (8), 2329-2341. https://doi.org/10.1523/JNEUROSCI.0052-15.2016
Goal-directed reaching movements are guided by visual feedback from both target and hand. The classical view is that the brain extracts information about target and hand positions from a visual scene, calculates a difference vector between them, and uses this estimate to control the movement. Here we show that during fast feedback control, this computation is not immediate, but evolves dynamically over time. Immediately after a change in the visual scene, the motor system generates independent responses to the errors in hand and target location. Only about 200 ms later, the changes in target and hand positions are combined appropriately in the response, slowly converging to the true difference vector. Therefore, our results provide evidence for the temporal evolution of spatial computations in the human visuomotor system, in which the accurate difference vector computation is first estimated by a fast approximation.
motor control, neural computations, visual processing, visuomotor, Adult, Feedback, Sensory, Female, Humans, Male, Movement, Photic Stimulation, Psychomotor Performance, Reaction Time, Space Perception, Young Adult
This work was funded by the Biotechnology and Biological Science Research Council (Grant BB/J009458/1), a postdoctoral fellowship of the Deutsche Forschungsgemeinschaft (RE 3265/1-1) to A.R., and a Wellcome Trust RCD Fellowship to D.W.F. (WT091547MA).
External DOI: https://doi.org/10.1523/JNEUROSCI.0052-15.2016
This record's URL: https://www.repository.cam.ac.uk/handle/1810/252516
Attribution 4.0 International
Licence URL: http://creativecommons.org/licenses/by/4.0/