Table 1.

Behaviors observed during microdialysis sample collection in the 10 min periods during and after BLA stimulation

Behaviors	Controls		LY354740		LY293558
Behaviors	During	After	During	After	During	After
Ambulation		63	0	13*	0	33
Grooming	0	59	0	25	0	11*
Freezing	96	56	94	81	100	56
Sniffing	48	63	6*	50	22	56
Mouth movement	63	26	81	69*	100*	67*
Jaw tremor	48	33	31	38	78*	89*

Data are presented as percentages of animals that exhibited selected behaviors within each group. The control group (n = 27) had normal Ringer's perfused into the microdialysis probe implanted in the PFC. In the other two groups, either the mGluR2 agonist LY354740 (n = 16) or the AMPA/kainate antagonist LY293558 (n = 9) was added to the Ringer's solution that was perfused into the PFC. All animals were at rest for the 10 min period before BLA stimulation (data not shown). Asterisks denote significant differences (p < 0.05) compared with the control group.