Doctors test for them within minutes of birth, because these simple motions reveal complex brain development. Primitive ...

FILE - A doctor points to PET scan results that are part of a study on Alzheimer's disease at Georgetown University Hospital, on Tuesday, May 19, 2015, in Washington. (AP Photo/Evan Vucci, File) ...

Misplaced your keys again? Blanked on the name of your neighbor’s dog? Don’t panic: Occasional forgetfulness is a normal part of aging. But if you have a sneaking suspicion that your memory lapses ...

What is the acoustic reflex? When a loud sound stimulus is presented to the ear, there is a reflexive contraction of the minute muscles that are connected to the ossicles in the Middle Ear. When these ...