Sensation And Perception 3

Front 1

middle temporal lobe

Back 1

selective for motion in one direction, little sensitivity to form or color, low-level motion (large scale)

Front 2

V1

Back 2

first site of interocular transfer

Front 3

after effects

Back 3

in cortical area of middle temporal

Front 4

first order motion

Back 4

motion defined by luminance

Front 5

second order motion

Back 5

motion of an object defined by changes in contrast/texture, not luminance

Front 6

optic array

Back 6

collection of light rays that interact with objects in the world (gibson)

Front 7

optic flow

Back 7

changing angular positions of points in a perspective image that we experience moving through space

Front 8

focus of expansion

Back 8

point in the center of the horizon form which, when we are in motion, all points in perspective seem to emanate

Front 9

tau

Back 9

estimating distance/rate using ratio of image size on the retina to the rate of expansion without knowing absolutes

Front 10

superior colliculus

Back 10

structure in midbrain that is important in initiating and guiding eye movement

Front 11

comparator

Back 11

area of the visual system that receives one copy of the order issued by the motor system when the eyes move (Other going to eye muscle) compensates for image changes caused by eye movement

Front 12

akinetopsia

Back 12

motion blindness

Front 13

overt attention

Back 13

directing sensory organs

Front 14

selective attention

Back 14

processing is restricted to a subset of the possible stimuli

Front 15

posner

Back 15

valid cue vs. invalid cue affects reaction time

Front 16

feature search

Back 16

search for a target defined by a single attribute such as color or orientation

Front 17

guided search

Back 17

searching or a target that is restricted by known basic properties fo the object

Front 18

conjunction search

Back 18

search for a target defined by presence of two or more attributes

Front 19

binding problem

Back 19

challenge of tying different attributes of visual system, which are handled by different parts of the brain, to the appropriate object so we perceive as a unified object

Front 20

feature integration theory

Back 20

treisman: a limited set of basic features can be processed in parallel

Front 21

attentional blink

Back 21

difficulty responding to second stimulus in stream if within 200-500 ms after first

Front 22

repetition blindness

Back 22

failure to detect second occurrence when rapidly presented

Front 23

fusiform face area

Back 23

area in extrastraite cortex esp. for faces

Front 24

parahippocampal place area

Back 24

region of cortex in temporal lobe esp. for recognizing places

Front 25

response enhancement

Back 25

neuron gives bigger response with attention

Front 26

sharper tuning

Back 26

make it easier for neuron to find weak vertical signal among noise

Front 27

visual field defect

Back 27

portion of visual field with no vision or abnormal vision

Front 28

neglect

Back 28

inability to attend/respond to stimuli in contralesional field

Front 29

extinction

Back 29

in presence of another stimulus can't see item on contralesional side

Front 30

balint syndrome

Back 30

bilateral lesions, can't locate objects, don't move eyes, simultagnosia

Front 31

simultagnosia

Back 31

inability to perceive more than one thing

Front 32

change blindness

Back 32

failure to notice change between two scenes if change doesn't alter large gist

Front 33

covert attention shifts

Back 33

shifting attention w/o shifting eyes, allow to seem 20-30 images as apposed to 3-4 with overt eye movement

Front 34

amplitude/intensity

Back 34

magnitude of pressure change, difference between highest and lowest pressure points, loudness

Front 35

frequency

Back 35

how quickly pressure fluctuates, measured in Hz, pitch

Front 36

Hz

Back 36

1 cycle/second

Front 37

fundamental frequency

Back 37

lowest frequency component of a complex period sound

Front 38

timbre

Back 38

sounds with the same loudness/pitch are dissimilar

Front 39

tympanic membrane

Back 39

ear drum

Front 40

ossicles

Back 40

malleus, incus, stapes

Front 41

malleus

Back 41

connected to tympanic membrane and incus

Front 42

incus

Back 42

connected to malleus and stapes

Front 43

stapes

Back 43

connected to incus and vibrates oval window

Front 44

tensor tympani

Back 44

muscle attached to malleus, tenses to decrease vibration

Front 45

stapedius

Back 45

muscle attached to stapes that decrease vibration in tensing

Front 46

acoustic reflex

Back 46

1/5 second, protects hearing

Front 47

coclea

Back 47

tiny coiled structure in temporal bone

Front 48

tympanic canal

Back 48

extends from round window to helio

Front 49

vestibular canal

Back 49

extends from oval window to helio

Front 50

heliocentrema

Back 50

connects tympanic and vestibular cnals

Front 51

organ or corti

Back 51

inside coclear patition along baliar membrane, made up of hair cells, 3500 inner, 10500 outer

Front 52

tectorial membrane

Back 52

extends atop the organ of corti