Lecture 9 Notes - topographic agnosia other objct agnosias...

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1. Alexia (return to re:language) 2. Case Studies A. Why are faces interesting? 1. Prepotency 2. Newborn preference 3. Inversion effect - Harder to recognize faces when upside down - Harder to see when they are distorted 4. Prosopagnosia a. Cannot recognize faces o Feel secluded from society o Recognize their loved ones by hair o Can recognize emotions o Difficulty identifying faces, knows a face is a face, can’t even recognize own face b. Cooccurances o Many co-occurances (is it just a form of object agnosia?), most of the time there is an effect on other areas, but recent studies show people with just prosopagnosia so it likely occurs because lesions are large o Often occurs with achromotopsia (can’t recognize colors),
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Unformatted text preview: topographic agnosia, other objct agnosias o Can be dissociated with face-matching deficits o Can be double dissociated from face expression and gaze analysis (determining where one is looking) c. Partial Information o One guy knew the face was a politician, but got the politician wrong o Another guy could tell sheep faces apart, but not human faces d. Patient CK as a double dissociation o Can’t identify objects, but can identify faces o In face fruit painting, can only see face, does not see fruits 5. Face Memory a. Patient can only identify faces before lesions b. Patient with dense amnesia who can remember individuals...
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