ANP 1106 Lecture Notes - Lecture 18: Lateral Geniculate Nucleus, Pupillary Light Reflex, Optic Chiasm

• School: University of Ottawa
• Department: Anatomy and Physiology
• Course: ANP 1106
• Professor: Jacqueline Carnegie

Document Summary

The ganglion cells project to the lateral geniculate cells of the thalamus whose axons form the optic radiation terminating on cells of the primary visual cortex in the occipital lobe. Information coming from the rods and the blue, green and red cones follow separate pathways to the primary visual cortex without mixing so that one can perceive the different colours. A visual cortex receives information only from the contralateral visual field. A single eye receives light from both visual fields thus the information must be directed to the correct cortex. The ganglion cell axons between the eye and the optic chiasm is called the optic nerve while the part of the ganglion cell axons between the optic chiasm and the thalamus is called the optic tract. The thalamus projects to the ipsilateral cortex. You should understand the deficits caused by the lesions at a, b and c in the figure on slide 66.