They always use the neurotransmitter acetylcholine, and are always excitatory.
More recently, studies on the role of immediate early gene expression in excitatory amino acid-induced neurotoxicity have been initiated.
The role of the excitatory neurotransmitter glutamate is being investigated.
Connections shown in red have an excitatory effect on target structures (primarily through the transmitter glutamate ).
Monitoring excitatory and inhibitory amino acids will it is hoped, elucidate the mechanism by which these drug exert their effect.