Professor Graham Collingridge describes the glutamate receptor, AMPA, the workhorse receptor for communicating information.
There are two major types of glutamate receptor at most synapses which show LTP, one of which is the AMPA receptor, and the other is called the NMDA receptor. The AMPA receptor is responsible for mediating the synaptic response during low frequency transmission in the brain. It is, if you like, the workhorse receptor for communicating information in the brain.