Week 2 Flashcards Preview

Perception and Cognition > Week 2 > Flashcards

Flashcards in Week 2 Deck (26):
1

Receptor cells (rods and cones) synapse with ______

Bipolar cells

2

bipolar cells synapse with _____

ganglion cells

3

On average 126 _____ converge to 1 _____ in the retina

receptor cells (rods and cones), ganglion cells

4

horizontal cells connect different ____ and ____

receptor, bipolar

5

amacrine cells connect different ____ and ____

bipolar, ganglion

6

list some of the characteristics of cones

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

7

list some of the characteristics of rods

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

8

_____ is dim light vision via ____

scotopic, rods

9

____ is bright light vision via ____

photopic, cones

10

photopigments in rods are called...

rhodospin

11

photopigments in cones are called

iodospin (3 variations, red green blue)

12

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

receptive field

13

the optic nerves synapse in the ___

LGN

14

the superior colliculi systems serves to functions such as

locating objects in space, guidance of eye movements

15

a symptom of LGN damage would be

unable to recognise patterns

16

a symtoms of superior colliculi damage would be

able to recognise patterns, but unable to accurately approach them

17

The visual pathway from retina to LGN and cortex serves for

recognition

18

The visual pathway from retina to superior colliculi is for

localisation

19

simple cortical cells respond to

bars of specific orientation

20

complex cortical cells respond to

bars of specific orientation moving in a particular direction

21

hypercomplex cortical cells respond to

moving lines of a particular length

22

cortical cells act as

feature detectors

23

light amplitude corresponds to

brightness

24

light wavelength corresponds to

colour

25

Rods and cones convert light energy into electrical energy via

photopigments

26

Different types of photopigments respond to different ______ of light

wavelengths, i.e. they 'see' different colours of light.