PS260 Lecture Notes - Lecture 3: Parallax, Optical Flow, Interposition
Document Summary
Visual system: modality in which humans acquire a lot of knowledge, much is known about neural wiring of visual system. Cornea transparent tissue at the front of each eye. Muscles control the curvature of the lens. Curvature helps the eye to form a sharp image on the retina. Retina light sensitive tissue that lines the back of the eyeball. Fovea the very centre of the retina. When we look at an object, we are lining the object up with the fovea. Higher acuity (ability to see fine detail) Photoreceptors stimulate bipolar cells, which stimulate ganglion cells. Bipolar cells receive input from photoreceptors; transmit info to ganglion cells. Ganglion cells collect information from retina and then gather to form optic nerve. Carries information from eye to different sites in brain: thalamus (lateral geniculate nucleus) First destination: occipital cortex (v1, primary visual projection area) Not just a passive carrier of information.
