Tuning

Question 1

Ocular Dominance Columns

Answer 1

The black lines refer to the dominant eye. It can be same your whole life or switch.

If you develop strong dominance in critical period, you disregard one eye and get a lazy eye; Amblyopia

Less space in the cortex, underdeveloped for one side. Can be somewhat adjusted.

Question 2

Cytochome Oxidase activity

Answer 2

Enzyme that shows the blobs in the V1, and the thin and thick stripes in the V2

Question 3

Receptive field Tuning

Answer 3

Feature selectivity of a neuron. The neuron only fires if the stimulus in the receptive field has certain characteristics.

The direction and orientation of a stimulus decides whether action potentials fire.

Question 4

Optical imaging

Answer 4

A test used to visualize the orientation columns

With the use of an optic chamber, light shines on the neurons. When they are firing, they reflect more light. This means, when you present a stimulus (eg vertical lines) you can see which area responds to that orientation.

If this is done for all orientation you can sum the data and see in a display which areas are tuned to which stimuli

Question 5

fMRI

Answer 5

used to find the ocolar dominant columns and the orientation colomns. What parts of the cortex respond to …