COGS101 Lecture Notes - Lecture 8: Dementia, Lilac Chaser, Fusiform Face Area
28 Aug 2018
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Not a memory problem, they can also say and know what it is but they cant visually recognise it. We do not know how brains recognise objects. What we see is not actually out there. Computers do not get close to what our brains do. We don"t know how our brains do it. What we see is not what we see. Our brains generate a percept based on input and prior experiences. Brains receive poor input and so it makes all of it up. Image> local features> shape representation> object representation. Usually caused by damage to the extra striate cortex. Still normal: acuity, brightness discrimination, colour vision, depth and contour perception. Unable to: group elements, recognise or match objects. Dorsal form: able to recognise elements but not the whole scene, one object at a time, gaze, pointing and reaching problems. Ventral: multiple objects can be seen, manipulated, counted etc, cannot grasp the meaning of the whole scene.
