sensation and perception pt 1

Question 1

perception

Answer 1

the top-down way our brains organize and interpret that information and put it into context.

Question 2

sensation

Answer 2

the bottom-up process by which our senses, like vision, hearing and smell, receive and relay outside stimuli.

Question 3

absolute threshold of sensation

Answer 3

the minimum stimulation needed to register a particular stimulus fifty percent of the time

Question 4

signal detection theory

Answer 4

a model for predicting how and when a person will detect weak stimuli, partly based on context.

Question 5

sensory adaptation

Answer 5

happens if a person is experiencing constant stimulation, and their senses adjust in this process.

Question 6

difference threshold

Answer 6

it is not linear; it is not the amount of change, but the percentage change that matters; you can tell if a little star is brighter than another little star but you can’t tell if a big star is not brighter than another big star

Question 7

rods

Answer 7

these are used in our peripheral vision as well as to avoid stubbing our toes in twilight conditions when we can’t really see in color

Question 8

cones

Answer 8

these detect fine detail and color. these function only in well lit conditions

Question 9

(young-helmholtz) trichromatic theory of color perception

Answer 9

this theory suggests that the retina houses three specific color receptor cones that register red, green and blue, and when stimulated together, their combined power allows the eye to register any color

Question 10

opponent-process theory of color perception

Answer 10

this theory suggests that we see color through processes that actually work against each other