In this video I discuss how color vision occurs and explain two important theories for understanding color vision; Young-Helmholtz Trichromatic Theory and Opponent Process Theory. Along the way I describe how some people are able to see ultraviolet (UV) light, a trick you can use to see infrared light, and two demonstrations of color afterimages. Don’t forget to subscribe … Read More
Photoreceptors, Receptive Fields, and Lateral Inhibition
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 retinal ganglion cells communicate differing patterns of light on the receptive fields. Finally I explain lateral inhibition and how it … Read More