Disparity neurons

Question 1

Selective disparity neurons

Answer 1

Neurons that repsond to selective disparity. Only active when:
- a line is presented simultaneously to both eyes
- in the correct orientation, direction of motion
- and in correct binocular disparity

Question 2

Location of disparity selective neurons

Answer 2

V1, V2, V3 and V3A of monkey visual cortex.
Detected quite early/. Types;
- Tuned near
- Tuned far
- Tuned zero
- Tuned inhibitory

Question 3

Tests to measure neuron sensitivity

Answer 3

Correlated and anticorrelated dot stereograms.

Left and right see stereogram with disparity:
- Depth is percieved (dome)
- Dots are correlated (dots black/white in both eyes)

Left and right see stereogram without disparity:
- No depth perceived
- Dots are anticorrelated (matching dots have opposite colors.

Results:
- V1 neurons showed inverse tuning for anti-crrelated dots

Question 4

Convex depth

Answer 4

Near sdiparity. Some neurons in the IT are tuned to this but not concave depth

Question 5

Concave depth

Answer 5

Idk i don’t get this