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optic nerve

the second cranial nerve, which carries the axons of retinal ganglion cells and extends from the retina to the optic chiasm. Also called cranial nerve II.

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Psychology term of the day

February 22nd 2025

excitotoxic lesion

excitotoxic lesion

a lesion caused by paroxysmal overactivity of neurons, which may be associated with seizures or occur after stroke. This is most commonly caused by overstimulation of neurons by excitatory amino acids (see excitotoxicity).