PSYC 260 Lecture Notes - Midbrain Tectum, Prototype Pattern, Thalamus
Document Summary
In cortex, visual processing splits into two distinct streams, each dealing with a distinct kind of representation. Vision for perception stream) occipital lobe"s visual cortex to the temporal lobe, which includes the fusiform gyrus. How (dorsal) stream = occipital lobe"s visual cortex to parietal lobe and other motor- related regions, and mostly detects motion and is associated with our movements and how we interact with what we are looking at. The visual representation of the what pathway is distinct from the visual representation of the how pathway. Visual agnosia (damage to the what stream) (in hierarchical organization) Apperceptive agnosia (form/shape: characterized by the inability to recognize and perceive visual forms and shapes. Patients have trouble recognizing, copying, or discriminating between different visual stimuli: patients are unable to copy images. Associative agnosia (objects: characterized by the inability to identify or categorize a visually presented stimulus despite adequate visual perception/recognition.
