BUS 17 Lecture Notes - Lecture 13: Supplementary Motor Area, Frontal Lobe, Ataxia
Document Summary
Transition from decisions about the stimulus to decisions about motor actions. Neural activity initially represents several alternative target choices. Evolves to reflect only the final goal. Final decision on what action goal will be actually pursuit via motor output. Detailing of the motor commands to perform the action. For online actions directed at currently visible stimuli based on their structure (size, shape, orientation) Lesions: optic ataxia (misreaching to visual targets) Processing of sensorimotor information based upon longer-term object use representations. Space perception and action understanding (recognition of actions made by others) Interface between ventral and dorsal streams of visual information processing. Processing of sensorimotor information based upon longer-term object use representation. Lesions: limb apraxia: online motor performance preserved (reaching and grasping) when vision of limb and target available & degrade when performed offline, overly reliant on online movement correction impaired skilled object use.
