Sensation and Perception

Question 1

___ is the minimum amount of stimulus energy that must be present for the stimulus to be detected 50% of the time

Answer 1

absolute threshold

Question 2

___ difference in stimuli required to detect a difference between the stimuli

Answer 2

just noticeable difference:

Question 3

___ message presented below the threshold of conscious awareness

Answer 3

subliminal message:

Question 4

conversion from sensory stimulus energy to action potential is

Answer 4

transduction

Question 5

state the Weber’s law

Answer 5

Ernst Weber’s discovery that the difference threshold is a constant fraction of the original stimulus and bigger stimuli require larger differences to be noticed

Question 6

signal detection theory

Answer 6

change in stimulus detection as a function of the current mental state

Question 7

___ refers to the way sensory information is organized, interpreted, and consciously experienced

Answer 7

Perception

Question 8

___ refers to sensory information from a stimulus in the environment driving a process

Answer 8

Bottom-up processing

Question 9

what is top-down processing

Answer 9

refers to knowledge and expectancy driving a process

Question 10

we often don’t perceive stimuli that remain relatively constant over prolonged periods of time. This is known as ?

Answer 10

sensory adaptation.

Question 11

what is signal detection theory

Answer 11

The ability to identify a stimulus when it is embedded in a distracting background

Question 12

height of a wave is ___

Answer 12

amplitude

Question 13

the blind spot is ___

Answer 13

point where we cannot respond to visual information in that portion of the visual field