PSYC 310 1st Edition Lecture 16Outline of Last Lecture I. Semantic NetworksII. Properties of Good Psychological TheoriesIII. The Connectionist ApproachIV. Categories in the BrainV. Human Development and CategorizationOutline of Current Lecture I. ImageryII. Spatial or Propositional?III. Interactions of Imagery & PerceptionIV. Imagery & the BrainCurrent LectureI. Imagerya. Mental Imagery: experiencing a sensory impression in the absence of sensoryinputi. Visual imagery: “seeing” in the absence of a visual stimulusii. Possible for all sensesb. Provides a way of thinking that adds another dimension to purely verbal techniquesc. Imagery & Perception: Spatial correspondence between imagery and perceptionThese notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.i. Mental scanningd. We act as if our mental images are physical entitiesi. Scanningii. AcuityII. Spatial or Propositional?a. Pylyshyn (1973)i. Spatial representation is an epiphenomenon1. Accompanies real mechanism but is not actually a part of itii. Proposed that imagery is propositional1. Can be represented by abstract symbols2. Imagery debatea. Proposition representation: networks of symbolsb. Spatial representation: picturesIII. Interactions of Imagery & Perceptiona. Relationship between viewing distance and ability to perceive detailsi. Imagine small animal next to large animalii. Quicker to detect details on the larger animalb. Mental-walk task: imagine walking closer to this animal until it fills your field of visioni. People take more time to walk up to small animals1. Need to move closer to small than animals than large animalsii. Images are spatial, like perceptionc. You can mistake actual picture for a mental imaged. Mental image can act like a priming stimuluse. Differences in experiencei. Perception is automatic and stableii. Imagery takes effort and is fragileIV. Imagery & the Braina. Transcranial Magnetic Stimulation (TMS)i. Decreases brain functioning in a particular area of the brain for a short timeii. If behavior is disrupted, the deactivated part of the brain is involved inbehavioriii. Brain damage affects imagery, evidence for double dissociation between imagery and perception1. Indicates separate mechanismsiv. Also evidence for shared mechanismsv. Using Imagery to Improve Memory1. Visualizing interacting imagesa. Bizzareness not necessary (?)2. Method of Locia. Visualizing items to be remembered in different locations in a mental image of a spatial
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