Oh no! Grammaropolis is currently experiencing problems with our video streaming service. Until service has been restored, please check out the music videos on our YouTube page.
1 A neurotoxin is a toxic agent or substance that inhibits, damages or destroys the tissues of the nervous system, especially neurons, the conducting cells of your body's central nervous system. 2  This is an example of a cytotoxin.
Excitotoxicity and cell damage. Excitotoxicity is the pathological process by which neurons are damaged and killed by the overactivations of receptors for the excitatory neurotransmitter glutamate, such as the NMDA receptor and AMPA receptor.