MT

Aka

middle temporal area (of parietal cortex???)

V5

Input from

V1 4B

V2 (esp thick stripes)

Function

primarily visual movement - depth perception + motion

Mechanism

global motion

90% of neurons directionally tuned

damage -> akinotopsia

From prosem

newsome: is MT responsible for perception of physical motion?

monkey (noisy) stimulus moving up or down

find a clump/column of MT neurons tuned to upper motion

• electrically stimulate them

the monkey tends to think that all the stimuli are moving up, unless there's a really strong downward motion before the monkey thinks it's going down

go to the next column, tuned downwards, get the opposite effect

did do some controls with getting the monkey to saccade in the opposite direction, or press a lever

but that doesn't feel like it's not just a motor reflex you're stimulating???

neurophysiologists would rather use each other's toothbrushes than each other's acronyms :)