Sensorimotor coordination (ataxia/apraxia)

Question 1

Posting card in a slot

Answer 1

PPC is involved in guiding movement based on visual input. this is info about the posture of the body eg. This test is used to test dorsal/ventral streams

Question 2

Patient DF

Answer 2

Can’t match en does not know what the object is. but can put card in the slot. Damage to visual region LO Aka ventral what pathway

Question 3

Patient VK

Answer 3

Can’t put object into slot, but knows the object and it’s purpose. Damage to PPC aka dorsal where pathway

Question 4

Optic ataxia

Answer 4

Inaccurate grasping/reaching. Damage to PPC (dorsal where).

Question 5

Apraxia

Answer 5

Inability to voluntarily perform previously learned movements despite motivation. Three forms

Question 6

Ideomotor apraxia

Answer 6

Inability to perform action when instructed or imitate. Damage to parietal and premotor corticles (left mostly). Can do it spontaneously

Question 7

Ideational apraxia

Answer 7

Inability to perform sequence of actions involving objects in correct order. Also damage to parietal and premotor corticles (left)

Question 8

Verbal apraxia

Answer 8

Difficulty producing speech.