“…In addition, the following antagonists of fast excitatory and inhibitory transmission were used: 100 M D-(Ϫ)-2-amino-5-phosphonopentanoic acid (D-AP5; an NMDA receptor antagonist; Tocris Bioscience), 20 -100 M 6-cyano-7-nitroquinoxaline-2,3-dione (CNQX; a nonNMDA receptor antagonist; Tocris Bioscience), 10 M bicuculline methiodide (a GABA A receptor antagonist; Sigma-Aldrich), and 10 M strychnine (a glycine receptor antagonist; Tocris Bioscience). The drug concentrations and the application time were similar to those used in previous studies (Bongianni et al, 1999(Bongianni et al, , 2002(Bongianni et al, , 2006Aberger et al, 2001;Le Ray et al, 2003Shao and Feldman, 2002;Tryba et al, 2003;Peña et al, 2004;Del Negro et al, 2005;Lorier et al, 2007;Shao et al, 2008;St. John and Leiter, 2008;Mutolo et al, 2010).…”