Biological motion Flashcards
MST neurons
Respond selectively to particular motion flow fields, often caused by self-motion. Not just to motion of individual targets.
Biological motion
We’re quick to recognize motion of species, even if very primitive. The Superior Temporal Sulcus is activated by biological motion
Zihl’s motion blind patient
Only sees stationary scenes with flasing objects. No motion neurons.
Akinetopsia: bilateral MT MST STS lesion
Virtual lesion of MT
Can be created using TMS. pulse of electricity doesn’t allow you to see coherent motion
Motion wins
More important than color, so when it moves you can’t perceive color change.
Pathways
Dorsal pathway
- Magno dominated, sees parasol cells
Ventral pathway
- Parvo dominated, sees midget cells