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Visual perception | Retina, photoreceptors, and rhodopsin

We don't see with our eyes, we see with our brains! This video is the first in a series on how the brain senses what's going on in the world. We start at vision, with the organization of the retina, the neurons that sense light, and the rhodopsin molecules in those neurons that transduce photons into activation of the nervous system. Retinas are quite a bit more sophisticated than the photodetectors on a digital camera! Human retinas are capable to detecting single photons, yet can also see in bright sunlight. We introduce the differences between rods and cones, and the implications of their organization on the retina for color vision and seeing at night. Bonus: Does eating carrots make you see better? And why does anyone thing so? Playlist for all videos in series:    • Introduction to Neuroscience   Professor Bing Wen Brunton www.bingbrunton.com