In this video I go into more detail on the retina, describing the two main types of photoreceptors (rods and cones) and how they operate in different levels of light. Next I describe the composition of receptive fields and how … Read More
Blood Vessels, Floaters, and Blind Spots
In this video I consider several strange aspects of vision such as why we don’t normally see the blood vessels in our eyes, what those odd shapes are that we see when we look at a clear sky, and why … Read More
Parts of the Eye: How Vision Works
In this video I describe the parts of the eye and the function of each of these parts for vision. I also explain why the red-eye effect occurs in photographs and how an additional light is able to correct for … Read More
Split Brains: What Happens When You Sever the Corpus Callosum?
In this video I cover research by Roger Sperry and Michael Gazzaniga on split brain patients who have had the corpus callosum severed. I explain some hemispheric specializations such as speech production and facial recognition as well as how visual … Read More