PSYB65H3 Lecture Notes - Lecture 5: Visual Agnosia, Optic Chiasm, Prosopagnosia
Document Summary
Visual agnosia is the inability to recognize objects for what they are; cannot figure out what to do with it or what it is used for; typically caused by damage to the left occipital lobe. Prosopagnosia is when a person cannot recognize faces; also may not be able to recognize other complex objects; typically from bilateral damage from areas 18 and 19. Colouragnosia is when the colours seem less intense to people, and in extreme cases, they can lose colour vision completely after a stroke; typically caused by bilateral damage to the occipital- temporal area. Babinski sign; test for babinski is to take a pen and run it along the bottom of the foot, and seeing which way toes curl (normal is down, abnormal is up); babies also have an abnormal. Babinski; if you have a less severe stroke, it tends to disrupt fine motor functions (difficulty typing, picking up things, etc.
