CAS PS 222 Lecture Notes - Lecture 6: Retinal Ganglion Cell, Retina, Ganglion

• School: Boston University
• Department: Psychological & Brain Sciences
• Course: CAS PS 222
• Professor: Andrea Mercurio

Document Summary

Remember: photoreceptors respond proportionally to the amount of light they pick up (and to particular wavelengths). There are millions of photoreceptors in the retina. Photoreceptors detect the stimulus and transduce it into signals that neurons can understand. One the light is focused on the retina, the photoreceptors at different location can detect the presence of light and can signal how much light they detect. How do we know the orientation of anything. I order to get the orientation, we need to pay attention to what is going on in all the individual pixels (photoreceptors). We need to organize the info from the photoreceptors. The rst thing we need to do is gure out where the boundaries of objects are. Differences in surface re ectance in objects tell us where boundaries are. This is what we need to do to see objects. This all is done by retinal ganglion cells.