Deanne can see and recognize objects,but she seems to be unable to reach out and grasp them appropriately.She often knocks over cups and drops pencils because she doesn't orient her hand to grip them.If this problem is related to brain damage to the perceptual system,which area is most likely to be damaged

Question

Quizplus · Accepted Answer

The dorsal stream is responsible for processing the visual information necessary for the guidance of movements or actions in response to visual stimuli. Damage to this area can result in difficulties in reaching and grasping objects (known as optic ataxia). The ventral stream is responsible for object recognition, so damage to this area would lead to difficulties in recognizing objects. The primary visual cortex is responsible for initial visual processing, so damage to this area would lead to visual deficits rather than difficulties in reaching and grasping objects. The superior colliculus is involved in the control of rapid eye movement and in orienting the head and eyes towards sensory events, but it is not directly involved in the control of reaching and grasping movements.

Deanne Can See and Recognize Objects,but She Seems to Be