Table 1.

Coordinates of brain regions showing a significant correlation with subjective sleepiness in the correlation analysis of fear-neutral contrasts ( p  < 0.001, uncorrected, k  > 5)

Positive correlation
	Brain region			BA		MNI		t	Clusterk
					x	y	z
	Right	Lentiform nucleus/Parahippocampal gyrus	Putamen/Amygdala		24	−4	−8	5.05	25
	Right	Lentiform nucleus	Putamen		28	4	12	4.9	16
	Left	Parahippocampal gyrus	Amygdala		−24	−8	−12	4.2	17
Negative correlation
	Left	Inferior parietal lobule		40	−40	−56	54	5.31	45
	Left	Precuneus		7	−4	−74	50	5.31	219
	Right	Superior frontal gyrus		10	22	56	−8	5.18	59
	Left	Fusiform gyrus		20	−40	−32	−22	4.83	26
	Right	Inferior temporal gyrus		20	34	−8	−42	4.78	33
	Left	Cingulate gyrus		23	−6	−24	32	4.62	74
	Left	Cerebellar tonsil			−50	−56	−42	4.22	6
	Left	Paracentral lobule		5	0	−44	62	4.22	55
	Left	Middle temporal gyrus		20	−56	−38	−12	4.09	5
	Right	Precuneus		7	18	−52	52	4.03	8
	Left	Superior frontal gyrus		11	−4	60	−22	4.02	11
	Right	Medial frontal gyrus		10	8	64	2	3.97	7
	Left	Posterior cingulate		29	−8	−44	16	3.96	11
	Left	Middle frontal gyrus		6	−36	−2	46	3.95	10
	Left	Middle frontal gyrus		11	−26	52	−14	3.82	14

The x, y, and z coordinates denote the peak location on the MNI template.

Abbreviations: BA = Brodmann area; MNI = Montreal Neurological Institute template; Cluster k = p < 0.001 uncorrected threshold; Degrees of freedom (df) = 20.