Patent ID: 8152727
Filing Date: 2012-04-10
Classification: A61B

Abstract:
1. A noninvasive method to determine the cerebral blood flow velocity response to colors of light observed by a human subject, including steps of: (a) obtaining a subject's baseline mean blood flow velocity in cerebral arteries on both sides of the brain using a simultaneous transcranial Doppler instrument with two probes placed on the temples and sample volumes focused on cerebral arteries on both sides; (b) testing the subject in one visual field with several colors while simultaneously monitoring the mean blood flow velocity in real-time; (c) simultaneously with (b) determining if there is an opponent mechanism between short wavelength and long wavelength colors; (d) simultaneously with (c) determining if there is an opponent mechanism between medium wavelength and long wavelength colors; (e) determining the opponent response between short- and long-wavelength colors using Fourier derived spectral density peaks at cortical and subcortical regions; (f) simultaneously with (e) determining opponent response between short wavelength and long wavelength colors for different vascular territories; (g) representing in a pattern the opponent response in all vascular territories; (h) simultaneously with (g) comparing the opponent response pattern to known patterns in normal and disease conditions; (i) determining regions of abnormal opponent responses; and (j) selecting the wavelength of colors that induced the activation or inhibition of blood flow velocity in areas of abnormal responses.