Table 3.

Regions in brain showing activation during inhalation of tussive substances for all participants.

Region	Peak coordinates
	X	Y	z	Max Z score
Capsaicin > Saline (n = 56)
Precentral gyrus	−45	−15	40	6.21
	46	−11	41	6.30
Paracingulate gyrus	−3	15	46	4.98
Cingulate gyrus	0	−18	32	4.54
Superior frontal gyrus	−13	12	66	4.43
Putamen	−26	−1	−1	3.92
Medulla	−2	−43	−53	5.33
ATP > Saline (n = 56)
Precentral gyrus	−36	−16	39	6.57
Supplementary motor cortex	7	4	49	5.79
Insular cortex	35	8	10	5.33
Middle temporal gyrus	−55	−36	−10	4.56
Cerebellum	35	−51	−50	4.30
Medulla	−1	−43	−55	4.99