Chapter 8.3:Chapter 8.3:Perception, Perception,

Illusions, and ESPIllusions, and ESP

Mr. McCormickMr. McCormickPsychologyPsychology

Do-Now:Do-Now:(Discussion)(Discussion)

What are What are optical illusionsoptical illusions??

Why do you think we experience them?Why do you think we experience them?

Provide an Provide an exampleexample of one optical illusion of one optical illusion that you have experienced.that you have experienced.

Perceptual OrganizationPerceptual Organization

Gestalt:Gestalt: The experience that comes from organizing The experience that comes from organizing

bits and pieces into meaningful wholesbits and pieces into meaningful wholes

Perceptual Organization

Perceptual Organization

Depth PerceptionDepth Perception

Depth Perception:Depth Perception: The ability to recognize distances and three-The ability to recognize distances and three-

dimensionalitydimensionality

Monocular Depth CuesMonocular Depth Cues

Monocular Depth Cues:Monocular Depth Cues: Cues that can be used with a Cues that can be used with a single eyesingle eye

E.g.:E.g.: Relative HeightRelative Height InterpositionInterposition Light and ShadowsLight and Shadows Texture/DetailTexture/Detail Motion ParallaxMotion Parallax Linear PerspectiveLinear Perspective Relative MotionRelative Motion

Monocular Depth CuesMonocular Depth Cues

How can you use How can you use monocular depth cues monocular depth cues

to perceive distance in this image?to perceive distance in this image?

Binocular Depth CuesBinocular Depth Cues

Binocular Depth Cues:Binocular Depth Cues: Cues that depend upon the movement of Cues that depend upon the movement of both both

eyeseyes

E.g.:E.g.: ConvergenceConvergence Retinal DisparityRetinal Disparity

Video Clip:Video Clip:“Is Seeing Believing?”“Is Seeing Believing?”

Why do the people in this Why do the people in this “Illusion Room” “Illusion Room” appearappear to change heights as they switch to change heights as they switch positions?positions?

How are our How are our monocular depth cuesmonocular depth cues being being misledmisled??

IllusionsIllusions

Illusions:Illusions: Perceptions that misrepresent physical stimuliPerceptions that misrepresent physical stimuli

IllusionsIllusions

IllusionsIllusions

IllusionsIllusions

3-D Sidewalk Illusions3-D Sidewalk Illusions

3-D Sidewalk Illusions3-D Sidewalk Illusions

3-D Sidewalk Illusions3-D Sidewalk Illusions

3-D Sidewalk Illusions3-D Sidewalk Illusions

3-D Sidewalk Illusions3-D Sidewalk Illusions

Extrasensory PerceptionExtrasensory Perception

Extrasensory Perception (ESP):Extrasensory Perception (ESP): An ability to gain information by some means An ability to gain information by some means

other than the ordinary sensesother than the ordinary senses

Types of ESP:Types of ESP: ClairvoyanceClairvoyance TelepathyTelepathy PsychokinesisPsychokinesis PrecognitionPrecognition

ReviewReview

What are What are GestaltsGestalts? What do they ? What do they implyimply about about perceptionperception??

What are the two ways in which humans What are the two ways in which humans perceive perceive depthdepth? Provide one ? Provide one exampleexample of each. of each.

What are What are illusionsillusions? What do they ? What do they imply imply about about perceptionperception??

What is What is ESPESP? Why has ? Why has sciencescience concluded little concluded little about this subject?about this subject?

HomeworkHomework

Study for Study for TestTest

Chapter 7:Chapter 7: Altered States of ConsciousnessAltered States of Consciousness

Chapter 8: Chapter 8: Sensation & PerceptionSensation & Perception