Week 9 Sensation and Perception 1

Question 1

Sensation refers to?

Answer 1

detection of physical energy by sense organs

Question 2

Perception refers to?

Answer 2

interpretation of sensory imput

Question 3

Transduction refer to?

Answer 3

external energy to neural electrical signals

Question 4

Absolute threshold

Answer 4

lowest level we can detect with 50% accuracy

Question 5

Webers Law

Answer 5

the stronger the stimulus the greater change has to be for us to detect it

Question 6

Synesthesia

Answer 6

cross-modal sensations like Colour hearing

Question 7

Cocktail Party effect

Answer 7

Pick up information relevant to us eg Name

Question 8

Change blindness/intentional blindness

Answer 8

Fail to notice changes in our environment if we are focused on something

Question 9

Cornea

Answer 9

transparent cells focus light on retina

Question 10

Retina

Answer 10

Membrane at back of the eye responsible for converting light to neural activity

Question 11

Fovea

Answer 11

central part of retina

less rod cells

Question 12

Lens

Answer 12

changes curvature to keep things in focus

Question 13

Dark adaption

Answer 13

time it takes for rods to regain sensitivity

Question 14

Simple and complex cells in Visual cortex

Answer 14

Orientation specific detect edges lines

complex are less restricted to one location

Question 15

Trichromic theory

Answer 15

three kinds of cone cells

Question 16

Opponent process theory

Answer 16

see three pairs of colours one inhibiting the other

Question 17

Bottom up processing

Answer 17

raw stimulus into something meaningful

Question 18

Top down processing

Answer 18

idea beliefs expectations then look for stimulus

perceptual set

Question 19

Gesalts Principles 
Proximity
Similarity
continuity
closure
symmetry
figure ground

Answer 19

Gesalts Principles
Proximity physically close more likely to be whole
Similarity share traits more likly to group them
continuity cross
closure our brains will fill in outline gaps
symmetry
figure ground ingnore the background