Test 183  (Ocular physiology)
1. The following are true about critical fusion frequency: 
a. it refers to the rate at which stimuli can be presented 
    and still be perceived as separate stimuli
b. it is dependent on visual acuity

c. it is dependent on the spacing between neighbouring 

d. it depends on the time-resolving ability of the eye

e. the frames used in movie are presented at a rate above 
    the critical fusion frequency.

2. Structures involved in colour vision include:

a. parvocellular pathway

b. superficial layer 4C of visual cortex

c. superior collliculi

d. geniculate layers 1-2

e. cerebellum

3. Area(s) in the visual cortex involved in colour vision include:
a. V1

b. V2

c. V3

d. V7

e. V8

. 4. Differences between the M cells and P cells include:
a. M cells have larger cell bodies than P cells

b. M cells have slower conduction rate than P cells

c. M cells have larger receptive field than P cells

d. M cells do not synapse in lateral geniculate body 
    whereas P cells do

e. M cells detect motion and P cells colour vision

5. The superior colliculi:

a. receives P fibres from the retina

b. receives M fibres from the retina

c. regulates saccade movement

d. is the centre for pursuit movement

e. is connected to the cerebellum via the tectopontine tract

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