Week 2

Question 1

Receptor cells (rods and cones) synapse with ______

Answer 1

Bipolar cells

Question 2

bipolar cells synapse with _____

Answer 2

ganglion cells

Question 3

On average 126 _____ converge to 1 _____ in the retina

Answer 3

receptor cells (rods and cones), ganglion cells

Question 4

horizontal cells connect different ____ and ____

Answer 4

receptor, bipolar

Question 5

amacrine cells connect different ____ and ____

Answer 5

bipolar, ganglion

Question 6

list some of the characteristics of cones

Answer 6

6 million, foveal vision and periphery, high acuity, colour, fast yet inefficient dark adaptation

Question 7

list some of the characteristics of rods

Answer 7

120 million, peripheral, slow yet efficient dark adaptation, low acuity, black and white

Question 8

_____ is dim light vision via ____

Answer 8

scotopic, rods

Question 9

____ is bright light vision via ____

Answer 9

photopic, cones

Question 10

photopigments in rods are called…

Answer 10

rhodospin

Question 11

photopigments in cones are called

Answer 11

iodospin (3 variations, red green blue)

Question 12

most ganglion cells receive inputs from multiple receptor cells, forming the _____

Answer 12

receptive field

Question 13

the optic nerves synapse in the ___

Answer 13

LGN

Question 14

the superior colliculi systems serves to functions such as

Answer 14

locating objects in space, guidance of eye movements

Question 15

a symptom of LGN damage would be

Answer 15

unable to recognise patterns

Question 16

a symtoms of superior colliculi damage would be

Answer 16

able to recognise patterns, but unable to accurately approach them

Question 17

The visual pathway from retina to LGN and cortex serves for

Answer 17

recognition

Question 18

The visual pathway from retina to superior colliculi is for

Answer 18

localisation

Question 19

simple cortical cells respond to

Answer 19

bars of specific orientation

Question 20

complex cortical cells respond to

Answer 20

bars of specific orientation moving in a particular direction

Question 21

hypercomplex cortical cells respond to

Answer 21

moving lines of a particular length

Question 22

cortical cells act as

Answer 22

feature detectors

Question 23

light amplitude corresponds to

Answer 23

brightness

Question 24

light wavelength corresponds to

Answer 24

colour

Question 25

Rods and cones convert light energy into electrical energy via

Answer 25

photopigments

Question 26

Different types of photopigments respond to different ______ of light

Answer 26

wavelengths, i.e. they ‘see’ different colours of light.