Class Notes (839,267)
Canada (511,230)
NEUR 2600 (19)

Visual Coding

2 Pages

Course Code
NEUR 2600
Ian Whishaw

This preview shows 80% of the first page. Sign up to view the full 2 pages of the document.
Visual Coding March-08-13 11:03 AM Whole dorsal part of the brainis unconscious. - Visual Coding 1. Cortical visual anatomy 2. ON-off center surround cells 3. Orientation detections 4. Visual development - The GeniculostriateSystem - Visual Field ○ Concept  Left - right visual cortex  Right - left visual cortex □ Cross half the fibers from each eyeto each side  Break the side down smaller □ Only excite a small part of the retina, which will onlyexcite a small part of the visual cortex  The visual fieldfor the bunny is just the area of the right visual field  Every cell has a visual field ◊ Sees a certain part of your world ◊ Find what it responds to, must find what its visual fieldis  Visual field projects onto a visual map, and so has a topographic representation ◊ It is upside down and backward – A stroke in a rightvisual cortex produces a blindspot in the left visual field  If below the clacarine fissure, the blindspot is in the upper quadrant □ The ventral stream but not the dorsal stream functions under anesthesia □ Inhibitionand excitation - the two response modes of neurons  Stephen W. Kuffler □ Cellswent on to spots of lightor off or both  If you put a light in the centre of the screen and indicate when the cell discharged ◊ The biggerthe circle, the more discharge ◊ On off center surround cells  Some cells respond to color ◊ Red green ◊ Blue-yellow ◊ Black-white 1. All ganglioncellsand all lateral geniculate body (LGB) cells are on-off or off-on center surround cells 2. On-off or off-on center surround cellscode for the above colors  Lateral inhibition ◊ Some receptor cellsare excitatory or inhibitory  The explanationfor center surround cells -it's the wiring at
More Less
Unlock Document

Only 80% of the first page are available for preview. Some parts have been intentionally blurred.

Unlock Document
You're Reading a Preview

Unlock to view full version

Unlock Document

Log In


Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.