PSY 2502 Lecture Notes - Lecture 1: Parietal Lobe, Two-Streams Hypothesis, Temporal Lobe
12 Apr 2016
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Document Summary
Don"t worry about all the regions in pic- just a couple (ffa, etc. ) From occipital lobe to infero temporal lobe (primary visual cortex to there). Inferotemporal- responds to shapes but also specific objects. Object discrimination: food was always under the cube or cylinder. The where task: has to figure out where the food is not by identifying objects, but knowing where the object. If you lesion inferotemporal lobe (what stream): cannot do discrimination task. If you lesion parietal lobes: cannot do the landmark task. If damage visual cortex, cannot do either task- all starts at v1. Double dissociation: lesion one part, do task a not b. lesion other part and see the reverse pattern. Ventral stream demonstrate strong object selectivity: cells in dorsal stream don"t respond to specific stimuli. Ventral stream responds depending on what the object is. Ventral stream: respond to stimuli at or near the fovea. The dorsal stream does not really process information related to fovea.
