Table 4.

Adaptation of tastant events within brain regions co‐activated by gustation and interoception

	Exteroceptive adaptation (EA)			Interoceptive adaptation (IA)			EA − IAa
	% Signal change			% Signal change			% Signal change
	Mean	SD	P	Mean	SD	P	t (14)	P
Sweet event
L dorsal mid‐insula	0.55	0.25	<0.001	0.42	0.31	<0.001	2.56	0.02
L ventral insula	0.46	0.29	<0.001	0.35	0.24	<0.001	1.77	0.10
R dorsal mid‐insula	0.51	0.31	<0.001	0.36	0.28	<0.001	2.43	0.03
Neutral event
L dorsal mid‐insula	0.55	0.36	<0.001	0.48	0.36	<0.001	1.17	0.26
L ventral insula	0.47	0.36	<0.001	0.44	0.40	<0.001	0.28	0.78
R dorsal mid‐insula	0.60	0.37	<0.001	0.50	0.42	<0.001	1.15	0.27

^a t values were computed using two‐tailed paired t‐tests.

A, anterior; P, posterior.