Table 2.

Individual occurrences (mean±SEM) of positive hedonic and negative affective taste reactivity responses in morphine or vehicle treated rats.

Positive Hedonic Behaviors				Negative Affective Behaviors
Groups	LTP	PL	RTP	F	FW	G	HS
SV	0.33±0.33	12.50± 8.92	17.00±4.79	2.17±1.22	21.00±8.96	7.17±3.46	2.50±0.85
S2	3.83±1.40	3.83± 1.42	32.00±9.83	0.00±0.00	3.17±1.76	0.83±0.65	0.33±0.33
S4	0.50±0.34	11.83± 8.43	33.33±2.78	0.00±0.00	1.00±1.00	1.33±1.33	0.00±0.00
FV	1.20±0.80	88.00±19.78	18.80±6.21	0.80±0.37	9.60±3.40	1.40±0.98	1.00±0.77
F2	5.50±2.14	21.67±11.22	28.83±8.73	0.17±0.17	0.67±0.33	5.00±3.33	0.33±0.33
F4	0.80±0.58	7.40± 2.94	43.00±7.31	0.00±0.00	0.00±0.00	0.80±0.49	0.60±0.24

Positive hedonic responses (mean±SEM) were subdivided into lateral tongue protrusions (LTP), paw licks (PL) and rhythmic (midline) tongue protrusions (RTP). Negative affective responses (mean±SEM) were subdivided into flails (F), face wipes (FW), gapes (G), and head shakes (HS). Experimental treatment groups: SV = sham depleted + vehicle; S2 = sham depleted + morphine (2 mg/kg); S4 = sham depleted + morphine (4 mg/kg); FV = furosemide depletion + vehicle; F2 = furosemide depletion + morphine (2 mg/kg); F4 = furosemide depletion + morphine (4 mg/kg).