PS260 Lecture Notes - Agnosia, Distributed Knowledge, Tachistoscope
Document Summary
Patients with apperceptive agnosia can perceive an object"s features but not the object in its entirety. Patients who suffer from apperceptive agnosia can see, but they can"t organize the elements they see in order to perceive an entire object. Patient d. f. was asked to copy the drawings shown in. Her attempts are shown in panel b. The problem is not in her drawing ability, because d. f. "s performance was much better (as shown in panel c) when she was asked to draw the same forms from memory, rather than from a model. Patients with associative agnosia can see (i. e. , have no difficulty in perceiving the entire object), but they cannot name it or recognize it for what it is. Recognition of objects relies on sophisticated cognitive processes despite being a seemingly easy task. The process of object recognition is complex and can depend on variations in.
