optic radiations

nerve fibers that project from the lateral geniculate nucleus to the visual cortex in the occipital lobe and to the pretectum, a structure in the midbrain important for the reflexive contraction of the pupils in the presence of light. As the optic radiations sweep around the lateral ventricles, they are called Meyer’s loop.

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Psychology term of the day

December 18th 2024

Type III cell

a type of taste cell that, when viewed by electron microscopy, is similar to a Type II cell but has dense-cored vesicles in its basal region. Type III cells comprise 15% of the cells in a taste bud; they contain acetylcholine and serotonin for activation of peripheral nerve fibers. Also called intermediate cell.