A reliable mechanism to predict the heaviness of an object is important for manipulating an object under environmental uncertainty. Recently, Cashaback et al. (Journal of Neurophysiol 117: 260-274, 2017) showed that for object lifting, the sensorimotor system uses a strategy that minimizes prediction error when the object's weight is uncertain. Previous research demonstrates that visually guided reaching is similarly optimised. Although this suggests a unified strategy of the sensorimotor system for object manipulation, the selected strategy appears to be task dependent and subject to change in response to the degree of environmental uncertainty.
- object lifting
- Bayesian inference
- predictive control
- Copyright © 2017, Journal of Neurophysiology