Because it's a potent NMDA antagonist which blocks glutamate induced excitotoxicity. Also see: http://en.wikipedia.org/wiki/NMDA_receptor_antagonist#Potential_

Because it's a potent NMDA antagonist which blocks glutamate induced excitotoxicity. Also see: http://en.wikipedia.org/wiki/NMDA_receptor_antagonist#Potential_for_treatment_of_excitotoxicity http://en.wikipedia.org/wiki/NMDA_receptor_antagonist#Potent...