Mammillary bodies

An MRI scan reveals how the mammillary bodies of a sleep apnea patient (right) are smaller than those of a control subject (left).

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Brain memory areas

Counterclockwise, from center: This image shows (1) the location of the mammillary bodies in the head, (2) their position on the underside of the brain, (3) normal mammillary bodies and (4) smaller mammillary bodies in sleep apnea patients.

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