Average concentration change and time course for norepinephrine in the vBNST. (A) Maximal norepinephrine concentration change measured in response to infused tastants (p < 0.0001 for sucrose, P < 0.0001 for quinine). (B) Time for 20 nM norepinephrine changes to occur (t±20nM) after initiation of tastant infusion. (C, D) Effect of idazoxan (IDA, 5 mg/kg), desipramine (DMI, 15 mg/kg), raclopride (RA, 2 mg/kg) and GBR 12909 (GBR, 15 mg/kg) on electrically evoked norepinephrine release. (C) Maximal evoked norepinephrine concentration ([NE]). (D) half-decay time (t1/2).
* Indicates significantly different from control values (P < 0.05).