chapter 9

Question 1

sensation

Answer 1

the act of absorbing raw energy (light waves, sound waves) through sensory organs

Question 2

transduction

Answer 2

conversion of this energy to neural signals

Question 3

perception

Answer 3

adding meaning or representation

selecting, organizing and interpreting these signals

Question 4

transduction

Answer 4

conversion of this energy to neural signals

Question 5

psychophysics

Answer 5

the just noticeable difference is the smallest amount of stimulus change we can detect

Question 6

head turn preference test

Answer 6

when babies turn their head and act excited with new stimuli

Question 7

what is webers law

Answer 7

just noticable difference.

law states the brighter the light, the more change in

Question 8

the spotlight metaphor

Answer 8

we can move our attention to focus on various areas of the visual field- a span from small to large areas of visual angle

narrowing the spotlight gives maximal processing to that part of the visual feild

Question 9

who introduced spotlight effect, who did he prove wrong?

Answer 9

posner- spotlight effect

freud-wrong-thought you saw all

Question 10

attention

Answer 10

concentration of mental energy to process incoming information

Question 11

extrasensory perception (esp)

Answer 11

when animals pick up on senses other than the 5 senses we have

Question 12

light

Answer 12

electromagnetic radiation visible to our eyes

Question 13

optics

Answer 13

study of light rays and their interactions

Question 14

in a vacuum em travels in a straight line, this is described as a ___

Answer 14

ray

Question 15

signal detection theory

Answer 15

perceptual judgment as combination of sensation and decision-making processes

Question 16

steps of signal detection theory

Answer 16

stimulus event
neural transduction
cognition/processing
response

Question 17

visual cortex (v1) (occipital cortex)

Answer 17

the occipital cortex where primary visual sensations are processed

Question 18

focal distance is what determines

Answer 18

clear vision vs blurry vision

Question 19

the occipital cortex where primary visual sensations are processed

Answer 19

visual cortex

Question 20

where do the optic nerves cross

Answer 20

optic chiasm

Question 21

know structure and function of eye

Answer 21

enter pic here

Question 22

photoreceptors

Answer 22

light sensitive that transduce light

Question 23

rods

Answer 23

sensitive to dim light but not color

Question 24

cones

Answer 24

sensitive to colors but not dim light

Question 25

bundle of neurons from the retina to the brain

Answer 25

optic nerve

Question 26

blind spot

Answer 26

point where the optic nerve exist…no photoreceptors

Question 27

tapetum lucidum

Answer 27

reflective cells in eyes. captures light that allows you to see in dark better

Question 28

glaucoma

Answer 28

when eye pressure gets too high and destroys retina

Question 29

whats the number one cause of blindness

Answer 29

diabetes

Question 30

how does stereo vision allow us to detect 3d of depth

Answer 30

by vergence

Question 31

Fovea

Answer 31

Area of sharpest vision in the retina

Question 32

Accommodation

Answer 32

Changing shape of lens to help focus on objects based on distance