Posterior Parietal Cortex (PPC)

Question 1

PPC

Answer 1

Area 5&7

Translates movement form retinal (eye-centered) to hand- head- or body-centered reference frames.

Question 2

Developments for paralysed

Answer 2

In spinal cord lesions, the cortical stuff still works. They’ve been trying to translate the signals to a motor arm.

Recordings of the population vectors was the start of this, where they could very accurately predict the movement based on the vector sum.

Question 3

Rat experiment

Answer 3

Robot arm was steered by the rat, without him knowing. After training to use a lever to control it, they measured the sequence/patterns of neural activity.

Question 4

Pattern recognition

Answer 4

They trained the patient to activate and turn of his motor cortex (biofeedback) and measured it to find the pattern. (done by the classifier)