Central Pathways
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Central Pathways - Perception - Lecture Slides, Slides of Brain and Cognitive Science
Central Pathways, Major Discoveries, Cell Types, Functional Organization, Maps and Columns, Torsten Weisel, David Hubel, Direction Selective Cells, Response Properties, Simple Cells are some important points in this lecture.
Typology: Slides
2011/2012
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Central Pathways
Torsten Weisel
David Hubel
Major discoveries
- Cell types in V
- Functional organization of V1 (Maps and columns)
Response Properties of V1 Neurons Simple cells:
- Low spontaneous activity (quiet when not stimulated).
- Receptive fields are elongated (not circular) and are also divided into excitatory (+) and inhibitory (-) regions.
- The (+) and (-) regions do not form a center and a surround but form alternating stripes (rectangular regions) -- edge detectors, slit detectors, line detectors.
- They are position (or phase) selective.
- They are orientation selective.
- They are size selective.
- They are often direction selective.
- They are often disparity selective.