PSYC 311 Lecture Notes - Lecture 12: Multiregional Origin Of Modern Humans, American Sign Language, Pretzel

• School: McGill University
• Department: Psychology
• Course: PSYC 311
• Professor: Michalakis Petrides

Document Summary

Scope and limitations of the concept of agnosia. Agnosia = lack or absence of knowledge. Apperceptive agnosia is due to the disturbed integration of otherwise normally perceived components of a stimulus. Associative agnosia is referred to as pure" agnosia. Article claims that perception is sufficient for recognition to take place. The claim is that agnosia is a malfunction of memory confined to certain stimuli. To sum up agnosia, it is a disorder in which an alert individual with normal attention, intellect, language and visual perception fails to arrive at the meaning of previously known non-verbal stimuli. To diagnose one with visual agnosia, you must establish the following: The impairment cannot be explained by an elementary disturbance of perception or intellect. The defect foes beyond an inability to name or describe verbally a stimulus with which the patient is otherwise familiar.