Sensation vs. Perception

Question 1

Sensation

Answer 1

PNS

Question 2

Perception

Answer 2

CNS

Question 3

Ganglia

Answer 3

Collections of neuronal cell bodies found outside the CNS
Once stimulus is received from sensory receptors or nerve endings the electrochemical energy is sent along neural pathways to various projection areas in the brain

Question 4

List the sensory receptors

Answer 4

Photo
Mechano
Noci
Thermo
Osmo
Olfactory
Taste

Question 5

What are the three main types of thresholds?

Answer 5

absolute, conscious perception, difference

Question 6

Absolute threshold

Answer 6

The minimum stimulus energy that is needed to activate a sensory system

Question 7

Threshold of conscious perception

Answer 7

The level of intensity that a stimulus must pass in order to be consciously perceived by the brain

Question 8

Subliminal perception

Answer 8

Information received by the CNS but does not cross the ToCP

Question 9

Difference threshold

Answer 9

The minimum change in the magnitude required for an observer to perceive that two diff stimuli are in fact different

Question 10

Webers Law

Answer 10

(initial - final) / initial

Question 11

Signal detection theory

Answer 11

internal and external factors influence thresholds

Question 12

Basic signal detection experiment

Answer 12

Noise trial
Catch trial
Hit ~> yes, signal present
Miss ~> no, signal present
False alarm ~> yes, no signal
Correct neg ~> no, no signal