Perceptual Organization

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Perceptual Organization. Objective: Explain how the mind perceives information from the senses and ways in which the mind can be tricked. CBM Video: Sensation & Perception Notes/Activities: Perceptual Organization Work on Children Book Due Friday 10/21 by 4:00 HW: Read pg. 248-263 - PowerPoint PPT Presentation

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Perceptual Organization

Perceptual OrganizationObjective: Explain how the mind perceives information from the senses and ways in which the mind can be tricked.CBMVideo: Sensation & PerceptionNotes/Activities: Perceptual OrganizationWork on Children Book Due Friday 10/21 by 4:00HW: Read pg. 248-263NEXT TEST: MUTIPLE CHOICE A-DAY MON OCT 24B-DAY TUES OCT 25 ESSAY A-DAY WED OCT 26B-DAY THURS OCT 27

Video Discovering Psychologyhttp://www.learner.org/discoveringpsychology/07/e07expand.html?pop=yes&pid=1504#What information does this video review?What is some of the new information provided?What explanations are given for our perception?

All Senses - GestaltThe following 7 slides apply to all the senses most commonly used with vision but can apply to all equally

What do you see?Figure Ground Perception all sensesTwo faces or a vase?4Proximity3 sets of parallel lines not six separate lines5Things that are proximal (Close together) are perceived as belonging togetherSimilarity9 separate shapesOrTwo columns and oneColumn?6Parts that are the same are perceived as belonging togetherContinuity7Perceive in lines & patterns; look for normal way of doing thingsClosure

8Fill in gaps to make a figurePerceptualOrganization- Grouping Principles

9ConnectednessExplain the following:Youre sitting on your porch hanging out with your friends. Several people go running by. Why? What is happening?Assume that all the people are together & are headed for same place even though not stated10Depth Perception

Perceptual OrganizationDepth Perception

Visual CliffUsed to test infants depth perception12Most infants refused to crawl on the glass which showed that they were afraid they were going to fallVisual CuesBinocular CuesConvergenceRetinal DisparityStereopsis

Monocular CuesTexture GradientLinear PerspectiveInterpositionMotion parallaxRelative sizeRelative brightness

Convergence both eyes looking at an object in the center of the visual field they must angle more sharply for a near object that a far object. Information from muscles that move the eyes provides a clue to the distance of the object from the viewerRetinal disparity eyes are a couple of inches apart so do not see the same view of objects, especially when it is close.Stereopsis two different images fuse into one after looking at them for an extended time

Monocular CuesTexture Gradient texture is more visible up close than far awayLinear objects cast smaller images on the retina when they are more distant (perspective)Interposition an object that is closer blocks the views of objects that are farther awayMotion parallax objects father away appear to move across the field of vision slower than closer objectsRelative size things that are closer are larger; those that are vertical seem taller than horizontalRelative brightness things that are closer seem brighter than those far away

13Perceptual ConstancyObject ConstancyShapeLocationBrightnessSizeMotion PerceptionStroboscopic MotionPhi Phenomenonhttp://highered.mcgraw-hill.com/sites/0070579431/student_view0/chapter8/phi_phenomenon_activity.html

Objects dont change in shaper, size, location, brightness because our brain is able to understand that the light not the object is changing

Motion PerceptionStroboscopic motion brain interprets rapid series of slightly varying images as movement (24 pcs/sec)Phi Phenomenon adjacent stationary lights blink on and off in quick succession perceive a single light moving back and forth between them14

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