KINESIOL 1E03 Lecture Notes - Lecture 11: Superior Colliculus, Research Question, Monocular Vision
16 Nov 2016
School
Department
Course
Professor
Document Summary
Vision is involved in different ways and at different times during an aiming movement. Visual system acquires early limb displacement and velocity information. Use as basis for switch to closed loop control. Calculate the timing of the gaze with the location of the hand movement. The two time courses are temporally and spatially coordinated. Found a tight coupling of eye movements and arm kinematics. Participants initiated eye movements about 70ms before they began to move their hand from the start location. Initial eye movement was made to a position close to target then made a second eye movement to the target. Gaze arrive 400ms before the finger (allows online visual feedback corrections) Completion of eye movement coincided with peak acceleration. Hand is oriented to the correct position to grasp object. Vision provides information about the object so that adjustments can be made. Motor control system operates more effectively when it receives information from both eyes.
