Visual Perception (Chapter 2)

Question 1

Sensation vs Perception

Answer 1

Sensation: info received by eye (light, shape, contour) vs Perception: processing of info by brain

Question 2

Visual Habituation

Answer 2

infants become used to stimulus until they look away, meaning they no longer have interest

Question 3

Preferential looking

Answer 3

Could use to find if infants can discriminate between 2 stimuli. Infant is habituated to stimulus then show new one if child looks longer at second stimulus it’s inferred they can discriminate between the two

Question 4

Visual acuity.

Answer 4

Clarity of focus within retina.

Question 5

Visual Cortical Regions, V1 & V2, Ventral Stream & Dorsal Stream

Answer 5

V1- Visual Cortex, V2- Prestriate cortex, Ventral Stream (V2 &V4), Dorsal Stream (V3, V5, & DM

Question 6

Lateral Geniculate Nucleus (LGN)

Answer 6

Part of the thalamus, part of brain that relays info from retina to brain.

Question 7

Focus

Answer 7

Dependent on fovea in retina (develops at 2-3m)

Question 8

Visual orientation.

Answer 8

Ability to move head and eyes in anticipation of stimulus.

Question 9

Electroencephalography

Answer 9

Electrical components of cells and tissues and changes in voltage to assess activity.

Question 10

saccades

Answer 10

Rapid movement of the eye typically used for reading

Question 11

Binocular parallax

Answer 11

Objects appear in different locations when viewed separately with one eye from the same position, depth perception

Question 12

Stereopsis

Answer 12

Two separate images from each of the two eyes are combined to make one image

Question 13

Ocular dominance columns

Answer 13

Process distinctive inputs from each eye and are sensitive to different information each eye receives

Question 14

Motion parallax

Answer 14

Depth Q where objects that are closer to us appear to move further across our field of view than distant objects

Question 15

ventral and dorsal pathways

Answer 15

v- primary visual cortex to temporal lobe (what an object is), d- primary cortex to parietal cortex (where an object is)

Question 16

Superior Temporal Sulcus & Fusiform Gyrus

Answer 16

process faces, STS used in gazing, Fusiform Face Area (FFA) in gyrus

Question 17

N170

Answer 17

Negative electrical signal measured in occipital and temporal region of scalp in response to human faces

Question 18

Parahippocampal

Answer 18

Part of brain’s limbic system involved in memories and recalling visual scenes