Chapter 2- Sensation And Perception

Question 1

Absolute threshold

Answer 1

Minimum stimulus energy needed to activate sensory system

Question 2

Subliminal perception

Answer 2

Below a given threshold

• stimulus may be too subtle to demand attention , or too brief

Question 3

Différence threshold

Answer 3

JND: minimum difference in magnitude between two stimuli before one can notice a difference

Question 4

Webers law

Answer 4

∆I/I = k

∆I = JND
I = initial stimulus 
K= constant

Question 5

Signal detection theory

Answer 5

When perception of stimuli can also be affected by non sensory factors (such as experiences, motives, expectations)

• hearing your name call out in a noisy room

Question 6

Visual pathway

Answer 6

Optic nerve -> optic chiasm-> optic tract -> LGN of the thalamus
->occipital lobe

Question 7

Draw out outer, middle, and inner ear

Answer 7

I expect at least three different colours

Question 8

Perilymph and endolymph

Answer 8

Endo: found in membranous labyrinth

Péri: found in boney labyrinth

Question 9

Auditory pathway

Answer 9

Vestibulocochlear nerve > brain stem

> ascend to medial geniculate nucleus of thalamus
auditory cortex in temporal lobe

LGN is for light
MGN is for music

Question 10

Identify 5 common gestalt principles

Answer 10

1) proximity
2) similarity
3) good continuation
4) subjective contours
5) closure

Question 11

Make more for eye and ear

Answer 11

What are you waiting for asshole?