Visual cues, expectations, and sensorimotor memories in the prediction and perception of object dynamics during manipulation.

ABSTRACT: When we grasp and lift novel objects, we rely on visual cues and sensorimotor memories to predictively scale our finger forces and exert compensatory torques according to object properties. Recently, it was shown that object appearance, previous force scaling errors, and previous torque compensation errors strongly impact our percept. However, the influence of visual geometric cues on the perception of object torques and weights in a grasp to lift task is poorly understood. Moreover, little is known about how visual cues, prior expectations, sensory feedback, and sensorimotor memories are integrated for anticipatory torque control and object perception. Here, 12 young and 12 elderly participants repeatedly grasped and lifted an object while trying to prevent object tilt. Before each trial,

SUBMITTER: Schneider TR 

PROVIDER: S-EPMC7007906 | biostudies-literature | 2020 Feb

REPOSITORIES: biostudies-literature