Perfusion with the GABAA antagonist through a microdialysis probe enhances 5-HT in the SFO.
Higher perfusion with the GABAA or GABAB agonist reduces the 5-HT levels.
The GABAA agonist attenuates the hypovolemia-increase in the 5-HT.
Muscimol, but not baclofen, affects in the 5-HT-mediated body fluid balance in the SFO.