The research reported in this paper was supported in part by grant N-16 from the American Heart Association, Illinois Affiliate (W.W.M.), and by the National Institutes of Health, CA57032 (E.G.). Some experiments and analyses of the data produced were performed at the Laboratory for Fluorescence Dynamics (LFD) in the Department of Physics at the University of Illinois at Urbana-Champaign (UIUC). The LFD is supported jointly by the National Institutes of Health (RR03155) and UIUC. A preliminary version of this study was presented at the 32nd Conference of the Society for Psychophysiological Research, San Diego, CA. October 14 18, 1992.
Feasibility of intracranial near-infrared optical scanning
Version of Record online: 30 JAN 2007
Volume 31, Issue 2, pages 211–215, March 1994
How to Cite
GRATTON, G., MAIER, J. S., FABIANI, M., MANTULIN, W. W. and GRATTON, E. (1994), Feasibility of intracranial near-infrared optical scanning. Psychophysiology, 31: 211–215. doi: 10.1111/j.1469-8986.1994.tb01043.x
We are grateful to John Cacioppo, David Friedman, and two anonymous reviewers for helpful comments on a previous version of this manuscript.
- Issue online: 30 JAN 2007
- Version of Record online: 30 JAN 2007
- (Received August 13, 1993; Accepted October 14, 1993)
- Noninvasive functional brain imaging;
- Photon migration in tissues
Light injected at a point on a surface of a scattering medium is emitted at the surface after traveling a quasisemicircular path deep into the medium. This phenomenon can be exploited to detect objects immersed in the medium from time-resolved measurements of light intensity at the surface. Our experiments on model systems demonstrate that absorbing objects, surrounded by bone and other scattering material, can be detected. The technique yields surface images of absorbing objects submerged in a scattering medium. Images of the same phantoms inside the cavity of a skull can be obtained by the same technique.