Closest to the visual field (and farthest from the brain) is the axon terminal, which releases a neurotransmitter called glutamate to bipolar cells.

Scientists have found that when brain cells, or neurons, are deprived of oxygen and glucose during a stroke, they release greater than normal quantities of a chemical called glutamate.

When harmed, the tissue is particularly prone to damage from one of the body's excitatory substances called glutamate.

Both enhance the action of a substance called glutamate, which has also been implicated in Alzheimer's disease.

This is a newer drug approved in October 2003 that works by blocking a substance called glutamate which may be overactive in someone with Alzheimer's disease.

Memantine (Namenda) works by regulating the amount of another chemical messenger in the brain, called glutamate.

This sets off a series of complex biochemical processes, including the release of an amino acid called glutamate, a toxin that kills brain cells.

The test, for abnormally high levels of a potentially harmful substance called glutamate, may allow doctors to determine which patients are most in need of aggressive treatment aimed at minimizing brain damage.

The test measures levels of a brain chemical called glutamate.

One neurotransmitter particularly susceptible to even small amounts of alcohol is called glutamate.