PSYC 311 Lecture Notes - Lecture 11: Frontal Lobe, Agraphia, Hemianopsia

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

Document Summary

Patients with visual agnosia do not respond appropriately to visually presented material even though visual sensory processing, language and g are all intact. Poor recognition is limited to the visual sphere appropriate responses are yielded when the patient is allowed to handle the object or hear it in use (tactile & auditory) When the patient fails to name but can indicate visual recognition by other means (description, gestures) the diagnosis is called anomia. Unlike the agnosic patient, the anomic patient does not improve when the material is presented via another non-visual sensory modality. Also, anomic patients exhibit conversational speech which contains indicators of difficulty the speech contains paraphasias and on visual confrontation naming because circumlocutions. Patients with this defect fail at recognition tasks because they cannot perceive clearly. They cannot draw misidentified items accurately or match them to sample. They are unable to point to objects named by the examiner.