Psychology Sensation

Front 1

Sensation

Back 1

process by which we detect physical engery from the enviroment and encode it as neural signals ( bottom -up)

Front 2

Perception

Back 2

process by which we select organize and interpret sensory information (top-down)

Front 3

Psychophysics

Back 3

study of relationship between the physical characteristics of stimuli and our psychological experience of them

Front 4

Absolute threshold

Back 4

min stimulation needed to detect a stimulus 50% of the time

Front 5

signal detection theory

Back 5

explains why different people have different threshold (experince, expectations, motivation, alertness)

Front 6

Subliminal

Back 6

something that is below your absolute threshold

Front 7

priming

Back 7

increased sensitivity to certain stimuli due to prior experince

Front 8

difference threshold

Back 8

how diff two things have to be in order to tell that they are different
Min is 50% of the time

Front 9

Weber's Law

Back 9

detects the noticeable difference between 2 stimuli they must differ by a constant %.
Weight must be 2%

Front 10

Sensory adaptation

Back 10

decreased sensitivity that occurs w. continued exposure to an unchanging stimuli ( getting used to things were surrounded with)

Front 11

transduction

Back 11

process of taking sensory imput and changing it into a neural signal

Front 12

Wave lenght

Back 12

distance from the peak of one light ( sound) wave to the next

Front 13

Intensity

Back 13

intensity of light and osund is determinded by the amplitude of the waves and is experenced as brightness and loudness

Front 14

pupil

Back 14

adjustable opening in the eye (light enters)

Front 15

iris

Back 15

ring of mucle tissue that forms the (pretty color part)

Front 16

lens

Back 16

transparent structure of the eye behind the pupil that changes shape to focus images on the retina

Front 17

accommodation

Back 17

process where the lens of the eye changes shape to focus images on the retina

Front 18

retina

Back 18

inner surface of the eye that contains rods and cones and neurons that form the begining of the optic nerve

Front 19

acuity

Back 19

sharpness of vision

Front 20

nearsightedness

Back 20

condition where nearby objects are seen clearly but distant objects are blurred bc light rays reflecting from them converge in front of the retina

Front 21

farsightedness

Back 21

distant objecs are seen clearly but nearby objects are blurred bc light rays reflecting inback of the retina

Front 22

rods

Back 22

transduce light into nerual impluses, black and white, needed for peripheral vision, poor sensitivity

Front 23

cones

Back 23

transduce light into nerual impluses, color, excellant sensitivity, best in bright light

Front 24

optic nerve

Back 24

axons and ganglion cells meet at the optic nerve the optic nerve carries neural impulses from the eye to the brain

Front 25

blind spot

Back 25

part of the retina where the optic nerve leaves the eye, no vision

Front 26

fovea

Back 26

retinas point of central focus. Only has CONES! clearest images are focused on the fovea

Front 27

feature detectors

Back 27

in visual cortex of the brain, special neurtons (dept, movement)

Front 28

parallel processing

Back 28

the idea that the feautre dectectors are all working at the same time

Front 29

Young-Helmholtz Trichromatic

Back 29

retina contains red green and blu receptors

Front 30

Opponent-process theory

Back 30

color vision depends on pairs of opposing retinal processes ( second stage of color processing)