Chapter 4: Sensation and Perception

Question 1

sensation

Answer 1

picking up on chemical signals/messages

Question 2

accessory structure

Answer 2

modifies the incoming energy

Question 3

sound

Answer 3

perception of vibration from the movement of air molecules

Question 4

how is sound usually measured?

Answer 4

DECIBELS

Question 5

for every increase of 20 decibels, the amplitude goes up by…

Answer 5

10 times

Question 6

Male voices tend to sound “deeper” or “lower” than female voices. If we looked at the sound waves, we would see that this is because male voices would have ______.

Answer 6

lower frequencies

Question 7

what is not an “accessory structure”?

Answer 7

hair cells

Question 8

sensory nerves

Answer 8

transports sensory input into the brain
(think CNS and PNS)

Question 9

if the bones in your ear become somewhat damaged, how will your hearing be effected?

Answer 9

could lead to everything sounding quiet or muffled

Question 10

what is vision?

Answer 10

our ability to sense light

Question 11

photoreceptors within the eye

Answer 11

rods and cones

Question 12

sensory receptor

Answer 12

converts energy to different signals so we can understand them
(or something among those lines)

Question 13

trichromatic theory

Answer 13

most people have 3 types of cones that respond to different wavelengths of light

Question 14

analgesic

Answer 14

inability to feel pain

Question 15

top down processing

Answer 15

involves high level, knowledge-based info

Question 16

bottom up processing

Answer 16

begins with basic info and works its way up

Question 17

TSA example for response criterion: airport received multiple terriost threats, do you have low or high critera?

Answer 17

low

Question 18

weber’s law

Answer 18

the just noticable difference

Question 19

fencher’s law

Answer 19

how big the difference feels

Question 20

psychophysics

Answer 20

describes the relationship between the physical environment and psychological experiences

Question 21

if the cornea of the eye is damaged, how will this affect your sight?

Answer 21

lenses of eye will be unable to focus

Question 22

common fate

Answer 22

Sets of objects that move in the same direction at the same speed are perceived together.

Question 23

the color white is a result in sensing…

Answer 23

an equal combination of short, medium and long wavelength light

Question 24

common region

Answer 24

Stimuli located within some boundary tend to be grouped together

Question 25

timbre

Answer 25

the quality of the wave

Question 26

frequency

Answer 26

number of wavelength per time

Question 27

pitch

Answer 27

high or low sound (in Hz)