15476
In contrast , an association of subthreshold doses of amphetamine with NMDA or AMPA receptor antagonists exerted a selective effect on reactivity to a spatial change .
 Chemical: amphetamine; Chemical: NMDA; Chemical: AMPA
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: amphetamine; Chemical: NMDA; Chemical: AMPA