Table 1.

Group characteristics: mean (SD or range)

	Age (years)	Education (years)	Handedness	Lifetime Alcohol (kg)	Smoker	Smoking Onset Age (year)
Controls (12 men)	46.3 −5.2	16.9 −3.4	11R, 1L	34.1 −34.6	0	–
Alcoholics (12 men)	45.7 −4.4	12.9 −2.7	9R, 2L, 1A	1223.5 −790.9	8 current 1 past	23 (14 to 24)
t-test or c2 p-value	n.s.	0.005	n.s.	0.0005	0.01

Alcoholics: sober for 31–539 days, except for one (sober for 1 day, no alcohol in blood).

Subjects refrained from smoking and drinking caffeinated beverages for at least 2 hours before PCASL acquisition.