Sensation And Perception Test 1

Front 1

transduction

Back 1

conversion of one form of energy to another

Front 2

perception

Back 2

conscious sensory experience

Front 3

recognition

Back 3

our ability to place an object in a category

Front 4

visual form agnosia

Back 4

an inability to recognize objects

Front 5

psychophysics

Back 5

use of quanitative methods to measure the relationship between stimuli and perception

Front 6

Cognitive influences on perception

Back 6

knowledge/factors that alter our perception

Front 7

Phenomenological Method

Back 7

method of studying perception that involves asking a person what they perceive

Front 8

Classical psychophysical methods

Back 8

limits, adjustment, and constant stimuli

Front 9

absolute threshold

Back 9

the smallest amount of stimulus energy necessary to detect a stimulus

Front 10

Weber's Law

Back 10

K = constant, DL/S= K
DL = difference threshold
S= total stimulus

Front 11

Cerebral Cortex

Back 11

2mm thick layer that covers the surface of the brain and contains machinery for perception

Front 12

modular organization

Back 12

specific functions are performed by specific areas of the cerebral cortex

Front 13

Primary receiving areas

Back 13

First areas of the cerebral cortex to receive a sensory signal

Front 14

Occipital lobe

Back 14

primary receiving area for visual signals

Front 15

Temporal Lobe

Back 15

primary receiving area for auditory signals

Front 16

Parietal lobe

Back 16

primary receiving area for skin signals such as pain, touch, temperature

Front 17

frontal lobe

Back 17

receives signals from all senses and coordinates information from two or more senses

Front 18

dendrites

Back 18

branch out from the nerve cell body to receive info from other neurons

Front 19

axon or nerve fiber

Back 19

filled with fluid that conducts electric signals

Front 20

Nerve

Back 20

consists of axons of many neurons

Front 21

spontaneous activity

Back 21

provides baseline level of a neuron, can jump and be perceived when nothing changed

Front 22

Refractory period

Back 22

interval between the time one nerve impulse occurs and when the next one can be generated

Front 23

excitatory transmitters

Back 23

cause the inside of the neuron to become more positive (depolarization) and may illicit an excitatory response

Front 24

inhibitory transmitters

Back 24

cause the inside of a neuron to become more negative (hyperpolarization) may reduce a neuron's ability to depolarize when subjected to an excitatory transmitter

Front 25

center-surround receptive field

Back 25

center of receptive field responds to different stumuli or responds differently to the same stumuli that surrounding area of that receptive field

Front 26

distributed coding

Back 26

the representation of a particular object by the pattern of firing of groups of neurons

Front 27

Sparse coding

Back 27

a particular object is represented by the firing of a relatively small number of neurons

Front 28

Mind-Body problem

Back 28

How do chemical/physical processes become our experience

Front 29

Long wave lengths vs short

Back 29

long= red, short = blue

Front 30

accommodation

Back 30

how muscles change the curvature of the lens to keep image focused on retina

Front 31

presbyopia

Back 31

the reduce ability of the eye to accommodate, experienced by older people

Front 32

myopia

Back 32

nearsightedness, light is focused in front of the retina

Front 33

isomerization

Back 33

the change of shape of the retinal when it is hit by a photon of light

Front 34

Purkinje shift

Back 34

after dark adaptation, the eyes are more sensitive to short wavelengths