Coherent motion tasks

Question 1

Manipulated

Answer 1

Dots move to left or right but number of dots into same direction varies. High coherence is easy, low is hard.

Question 2

Motivation component

Answer 2

Monkeys had to make an eye movement to one or the other light. More reward in one, so preferred light has more eye movement, but the activation also goes up. Implying motivational component

Question 3

Scaling of activation by movement value

Answer 3

Activity is higher for high rewarded movements. The motor areas show the motivational value, as the eye activation is not higher with higher hand moving reward.

Question 4

Biased

Answer 4

When FEFs are microstimulated during the ramping up of activity. The eye movement leaks through

Question 5

Cued uncued monkey experiment

Answer 5

Monkeys learn a sequence, the SMA and M1 are inactivated one at a time.

Cued; monkeys perform sequence with external cues

Uncued: Monkeys perform sequence with internal cues (memory)

Question 6

Results cued uncued

Answer 6

Inactivation of SMA: errors in uncued condition, no problem in cued condition (SMA=internally driven)

Inactivation of premotor: Error is cued condition, no problem in uncued (prem. is externally driven)