Table 1:

Summary data of normalized and nonnormalized mean PSC and SD for both analysis methods

N = 16	Nonnormalized Data				Normalized Data
	PSC Boxcar		PSC Automated		PSC/mm Hg Boxcar		PSC/mm Hg Automated
P = <.05^*	Mean SD		Mean SD		Mean SD		Mean SD
Whole brain (GM+WM)	2.86	0.60	2.70^*	0.43	0.41	0.13	0.39	0.16
Whole-brain GM	2.93	0.68	2.73	0.48	0.42	0.13	0.40	0.16
Whole-brain WM	2.65	0.43	2.54^*	0.29	0.38	0.13	0.37	0.14
GM MCA territory	2.88	0.61	2.68^*	0.39	0.41	0.14	0.39	0.15

Note:—PSC indicates percentage BOLD signal change; GM, gray matter; WM, white matter; MCA, middle cerebral artery.
* Indicates significant difference to a level of .05.