NBB 302 Chapter Notes - Chapter 3: Auditory Agnosia, Two-Streams Hypothesis, Parietal Lobe

• School: Emory University
• Department: Neuroscience & Behavioral Sci
• Course: NBB 302
• Professor: Gillian Hue

Document Summary

Chapter 6: object recognition (219-261: introduction, patient g. s. His hands knew functionally so his eyes were processing the image; ruled out memory issues --> visual agnosia: principles of object recognition, agnosia: failure of knowledge/recognition (ex visual agnosia, 4 major concepts. Product of perception is also intimately interwoven with memory: multiple pathways for visual perception, visual info --> v1 --> ventral (occipitotemporal) / dorsal (occipitoparietal) stream. Dorsal stream occipitoparietal: object perception and recognition -- what, temporal lobe, neuron receptive fields always. Spatial perception -- where: parietal lobe, neurons may respond similarly to diff stimuli encompass fovea; activated by stimuli in. L/r visual field: cells have diverse pattern of selectivity, posterior -- simple features (edges, more anterior -- complex features (body, 40% neurons w/receptive fields in fovea, remaining outside fovea. Auditory -- anterior (what is sound); posterior (where is sound) Optic ataxia: recog objects but cannot use visual info to guide actions. Selective attention: enhancement of processing at some locations.