Chorda tympani nerve (CT) whole nerve integrated, rectified activity (μV) in response to lingual application of quinine hydrochloride (QHCl), NaCl (75, 150, 300, 450, 600 mM), and NaCl mixed with amiloride. A: representative trace from a control rat. B: representative trace from a 2-day Na+-deprived (NaD2) rat.