Perception Review
Kimberley Clow
kclow2@uwo.ca
http://instruct.uwo.ca/psychology/215a-570
Final Exam
 Cumulative Final
– Textbook chapters 10, 15, & 16
– All lectures (September-December)
– 30-ish questions on info since test2
– 50-ish questions on test1 and test2 info
 40%
– Unless you missed or replace test1 or missed or
replace test2
• Then it is 70%
– Unless you missed or replaced BOTH tests
• Then it is 100%
Definitions
 Sensation
– the process by which stimuli are registered in the receptors
 Perception
– the conscious experience of objects and object relationships
 Psychophysics
– The study of the relationship between physical stimuli in the world
and the sensations about them that we experience
 Absolute Threshold
– Boundary between detectable and undetectable stimuli
 Just Noticeable Difference
– Minimum amount a stimulus must be changed to produce a
noticeable difference
Psychophysics
 What are we looking
at?
– What is detection?
– What is
discrimination?
– What is scaling?
– What is identification?
 Scaling
– Indirect Scaling
– Magnatude Estimation
– Cross Modality
Matching
 What are the methods
of psychophysics?
– Method of Constant
Stimuli
– Method of Limits
– Staircase Method
– Signal Detection
Theory
 Weber’s Law
Vision
 Cones
– Colour vision
– Acuity
– Fovea
 Rods
– Night vision
– Periphery
 The Eye
– Cornea
– Lens
– Retina
– Blind spot
 Lateral Inhibition
 Focusing the Eye
– Accommodation
– Near vs. Far-sighted
 Receptive Fields
 Visual Pathway
– Tectopulvinar
– Geniculostriate
 Visual Cortex Areas
– V1-V5
Colour Vision
 When do we see white?
 What is the Trichromatic Theory?
 What is the Opponent-Process Theory?
 What are the different forms of color blindness?
– Which is most common?
 What is additive colour mixing?
– Primaries?
 What is subtractive colour mixing?
– Primaries?
Hearing
 The frequency of a sound wave corresponds to
what perceptual quality of sound?
 What is timbre?
 What is another name for the eardrum?
 What are those bones in the middle ear called?
 How does the auditory system code pitch?
 How do we locate sound?
 How do the different neurons respond?
– Onset, Pauser, Chopper, Primary-like, Offset
 What are the auditory pathways?
 Describe the auditory cortex
Speech
 Pronouncing vowels vs. consonants
 Define phonology, semantics, and syntax
 What do you know about formants?
 What is categorical perception?
 The McGurk Effect
 Phonemic Restoration Effect
 Pauses
 Speech Errors
 Aphasia
– Broca’s; Wernicke’s
Touch, Taste, & Smell
 Touch
– 4 Receptor Types
• Adapting & Receptive
Fields
– Somatosensory Cortex
• Representation
– Pain
– Touch Acuity
– Haptics
 Taste
– 4 Papillae
– Supertasters
– Identifying tastes
• Effects of smell
 Smell
– Olfactory bulb
• Cilia
– Identification vs.
Discrimination
– Pheromones
• McClintock Effect
– Memory
Depth
 Oculomotor
– Accommodation
– Convergence
 Pictorial Cues
–
–
–
–
–
–
–
Interposition
Relative Size
Familiar Size
Atmospheric Haze
Linear Perspective
Texture Gradient
Shading
 Motion Based Cues
– Motion Parallax
– Biological Motion
– Kinetic Depth Effect
 Binocular Cues
– Retinal Disparity
• Crossed & Uncrossed
• Diplopia
• Horopter
Perceiving Form
 Form defined by
texture
 Pop-out effects
 Perceiving form
– Change
– Top down vs. bottom
up processing
– Figure-Ground
 Theories
– Template Theories
– Feature Theories
• Pandemonium Model
 Gestalt Principles
– Proximity
– Similarity
– Good Continuation
– Symmetry
– Closure
– Subjective Contours
Perceiving Objects
 Attention
– Change Blindness
– Cued Paradigm
 Theories
– Recognition by Components
– View-Based Recognition
 Is face perception special?
– Prosopagnosia
– Greebles
Learning & Experience
 Development of the
visual system
– Acuity, contrast
sensitivity, colour
perception
 Methodologies
– Fixating & Scanning,
Reflexes, Preferential
Looking, Habituation,
Forced-Choice
Preferential Looking
 Development of
– Form, Motion, &
Depth Perception
– Monocular &
Binocular Cues
 Experiences
– Strabismus
– Astigmatism
– Monocular Deprivation
 Critical Periods
 Restored Vision
– SB
No Class Wednesday
Study Hard!
&
Good Luck!!