Chapter 3

Question 1

Sensation

Answer 1

Messages from the senses.

Question 2

Sensory Receptors

Answer 2

Specialized cells that detect sensory stimuli

Question 3

Transduction

Answer 3

Translation of physical properties into electrical signals to be sent to the brain.

Question 4

Perception

Answer 4

Process of making sensations into meaningful experiences.

Question 5

Sensory Thresholds

Answer 5

.

Question 6

Absolute Threshold

Answer 6

The smaller amount of a stimulus that can be detected (50% of the time).
Gustav Fechner

Question 7

.

Answer 7

.

Question 8

Difference Threshold

Answer 8

The amount of difference between two stimuli required for detection.
Just noticeable difference (jnd)
Weber

Question 9

.

Answer 9

.

Question 10

Weber’s Law

Answer 10

The amount of change in stimulated needed to produce a noticeable difference is a constant proportion of original stimulus.

Question 11

,

Answer 11

,

Question 12

Weber’s Fraction (K)

Answer 12

.

Question 13

Subliminal Perception

Answer 13

Below the threshold of awareness.

Question 14

.

Answer 14

.

Question 15

Sensory Adaption

Answer 15

Sensitivity decreased over time.

Change in the receptors themselves.

Question 16

.

Answer 16

.

Question 17

Habituation

Answer 17

Ignoring a stimulus

receptors do not change

Question 18

.

Answer 18

.

Question 19

Stimulation for vision is ________ __________.

Answer 19

Electromagnetic radiation.

Question 20

Visible _____ small part of spectrum.

Answer 20

Light. PAGE 12/44