June 2020
Beginner
256 pages
5h 38m
English
In 1959, David Hubel and Torsten Wiesel showed that some cells in the visual cortex respond only to horizontal lines, others respond only to vertical lines, others respond only to edges, and still others respond only to certain angles.
The theory for many years has been that the retina receives electrical patterns from what we look at and creates several tracks from the patterns. Some tracks contain information about shadows, others about movement, and so on. As many as 12 tracks of information are then sent to the brain’s visual cortex. In the visual cortex special areas respond to and process the information. For example, one area responds only to lines that are tilted ...