Chapter 4 Flashcards Preview

Psych Midterm 3 > Chapter 4 > Flashcards

Flashcards in Chapter 4 Deck (132)
Loading flashcards...
1

Oliver Sacks

- famous is popularizing brain disorders
- diagnosed dr. p with prosopagnosia

2

Dr. P

- could not recognize his student, described photos in strange ways, mistook his wife for a hat, would describe features instead of what item was
- had problem with perception but not sensation
- diagnosed with prosopagnosia

3

prosopagnosia

inability to recognize faces

4

sensation

- stimulation of sense organs
- producing neural activity normally

5

perception

- selection, organization, and interpretation of sensory input
- what our brain does with information

6

psychophysics

- study of how physical stimuli are translated into psychological experience

7

Concept of threshold

- by Gustav Fechner
- focused on our picking up of info from environment
- when do we detect a stimulus?

8

absolute threshold

- minimal amount of stimulation that an organism can detect 50% of time
- not perfect observers, if we were line would be straight

9

vision threshold

- candle flame 50km on dark clear night

10

hearing threshold

- tick of watch in quiet condition 6 meters away

11

taste threshold

- one tsp of sugar in 7.5 litres of water

12

smell threshold

- one drop of perfume diffused in six-room apartment

13

touch threshold

- wing of fly falling on face from 1cm away

14

just noticeable difference (JND)

smallest difference between 2 stimuli

15

webers law

- size of JND proportional to size of initial stimulus
- JND= 1oz per 30 oz
- 60oz, 62oz to notice difference
- as we increase size in original we must increase difference

16

signal detection theory

- detection of sensory info is influenced by sensory processes and decision processes
- need to decide whether stimulus is present or absent

17

hit

- you think someone is at the door
- someone is at the door

18

false alarm

- you think someone is at the door
- no one is at the door

19

miss

- you think no one is at the door
- someone is at the door

20

correct rejection

- you think no one is at the door
- no one is at the door

21

perception without awareness

research doesn't support that is hugely affects behaviour

22

subliminal perception

a registration of sensory input without being aware of it (advertisements)

23

sensory adaptation

- decline in sensitivity
- overtime we become less sensitive to a stimulus
- perfume, skunk, cold pool

24

synaethesia

- condition in which perceptual/cognitive activity triggers special experiences
- positive or negative effects
- overlapping of senses
- 3=blue

25

amplitude of light wave

- high amplitude= bright light

26

wavelength of light wave

- colour
- long= red
- medium= green
- short= blue

27

purity

- mixture of wavelength in light
- one wavelength is more pure

28

saturation

- richness of colour
- amount of whiteness in a colour impacts saturation

29

human light field of vision

- visible light spectrum
- snakes= infrared
- insects= ultraviolet

30

retina

- neural tissue at back of eye