sensory perception

Question 1

what clues do we use to perceptually organize our environment?

Answer 1

depth, form, motion, constancy

Question 2

binocular cues

Answer 2

give senses of depth, and retinal disparity
eyes ~2.5 in apart which allows humans to get slightly different views of objects of world around

Question 3

convergence

Answer 3

gives humans an idea of depth as well based on how much eyeballs are turned

Question 4

convergence: things far away

Answer 4

muscles of eyes relaxed

Question 5

convergence: things close to us

Answer 5

muscles of eyes contract

Question 6

monocular cues

Answer 6

visual cues humans recieve which they do not need two eyes for

Question 7

relative size

Answer 7

can infer with one eye, closer th object is percieved the bigger

Question 8

interposition

Answer 8

perception that one object is in front of another

Question 9

relative height

Answer 9

things higher are perceived to be farther away than those that are lower

Question 10

shading and contour

Answer 10

using light and shadows to percieve form depth/contours–crater vs mountain

Question 11

motion parallax

Answer 11

“relative motion” things farther away move slower, closer things move faster

Question 12

constancy

Answer 12

our perception of object doesn’t change even if the image cast on the retina is different. Different types of constancy include size constancy, shape constancy, color constancy

Question 13

size constancy

Answer 13

one thing appears larger because its closer we still think it is the same size

Question 14

shape constancy

Answer 14

a changing shape still maintains the same shape perception

Question 15

color constancy

Answer 15

despite changes in lighting which change the image color falling on our retina we understand that the object is the same color

Question 16

sensory adaptation

Answer 16

our senses are adaptable and they can change their sensitivity in response to stimuli

Question 17

inner ear muscle

Answer 17

tighten in response to acute, high sounds, doesn’t work quickly for sounds like gunshot or racecars

Question 18

touch

Answer 18

temperature receptors desensitized over time

Question 19

smell

Answer 19

desensitized receptors in your nose to molecule sensory info over time

Question 20

proprioception

Answer 20

is the sense of the position of the body in space

Question 21

sight

Answer 21

down or up regulation to light intensity

Question 22

Weber’s Law

Answer 22

2 vs 2.05 lbs doesn’t feel different but 2 vs 2.2 lbs does

Question 23

just noticeable difference

Answer 23

the threshold at which you’re able to notice a change in any sensation

Question 24

Weber’s Law equation

Answer 24

ΔI (JND)/I (initial intensity) = k (constant)

Question 25

absolute threshold of sensation

Answer 25

minimum intensity of stimulus needed to detect particular stimulus 50% of the time

Question 26

low levels of stimulus

Answer 26

can be detected by some not others, individual based

Question 27

absolute threshold

Answer 27

can be influenced by expectations, experience, motivation, alertness

Question 28

subliminal stimuli

Answer 28

stimuli below the absolute threshold of sensation