Table 2.

Mean blood flow velocities in posterior cerebral artery during the white light stimulation and in the dark in the group of healthy subjects.

Mean blood flow velocities in posterior cerebral artery (cm/s ± 2SD)
		Light	Dark
Healthy (n = 30)	Right PCA	29.99 ± 9.5	20.12 ± 8.33
	Left PCA	30.56 ± 8.34	21.40 ± 7.32

cm/s: centimeters in second.

n: number of healthy subjects.

PCA: posterior cerebral artery.

SD: standard deviation.