Physiology 3120 Lecture Notes - Lecture 6: Deconstruction, Retinotopy, Prosopagnosia

• School: Western University
• Department: Physiology
• Course: Physiology 3120
• Professor: Tom Stavraky

Document Summary

Two types of photoreceptors in the retinas are the rods and cones. Rods and cones make synaptic connections with bipolar neurons. Bipolar neurons then make synaptic connections with ganglion cells. Ganglion cells then have axons which go into the optic nerve. Optic nerve goes from retina into central ns and up to thalamus. Retina is part of the central ns an outpocketing of the brain which is why there are lots neurons and interneurons in the retina as it is part of the central ns. Direction of light would intuitively think would go from photoreceptors and down but in reality goes from optic nerve up to photoreceptors. Photoreceptors in this example are rods at the top. More than one rod can converge on to one bipolar cell (middle of picture) Bipolar cells connect to ganglion cells that go on to lateral geniculate area in thalamus. From there it goes to the visual cortex.