Publications of Hellmuth Obrig

Heekeren, H. R., Kohl, M., Obrig, H., Wenzel, R., Pannwitz, W. V., Matcher, S. J., … Villringer, A. (1999). Noninvasive Assessment of Changes in Cytochrome-C-Oxidase Oxidation in Human Subjects during Visual Stimulation. Journal of Cerebral Blood Flow & Metabolism, 19, 592–603.

Kohl, M., Nolte, C., Heekeren, H. R., Horst, S., Scholz, U., Obrig, H., & Villringer, A. (1998). Determination of the wavelength dependence of the differential pathlength factor from near infrared pulse signals. Physics in Medicine and Biology, 42, 1171–1182.

Heekeren, H., Obrig, H., Wenzel, R., Eberle, K., Ruben, J., Villringer, K., … Villringer, A. (1997). Cerebral haemoglobin oxygenation during sustained visual stimulation: A near–infrared spectroscopy study. Proceedings of the Royal Society of London Series B-Biological Sciences, 352, 743–750.

Arnold, G., Kinze, S., von Pannewitz, H., Obrig, H., & Villringer, A. (1997). Kann man den Blutfluss während der Migräne-Attacke messen? Med-Report, 26, 6.

Heekeren, H. R., Wenzel, R., Obrig, H., Ruben, J., Ndayisaba, J. P., Luo, Q., … Chance, B. (1997). Towards noninvasive optical human brain mapping - improvements of the spectral, temporal and spatial resolution of near-infrared spectroscopy. Proceedings SPIE, 2979, 847–857.

Hirth, C., Obrig, H., Valdueza, J., Dirnagl, U., & Villringer, A. (1997). Simultaneous assessment of cerebral oxygenation and hemodynamics during a motor task. A combined near infrared and transcranial doppler sonography study. Advances in Experimental Medicine and Biology, 411, 461–469.

Hirth, C., Obrig, H., Villringer, K., Bernarding, J., Thiel, A., Dirnagl, U., … Mühlnickl, W. (1997). Towards brain mapping combining near-infrared spectroscopy and high resolution 3D MRI. Advances in Experimental Medicine and Biology, 413, 139–147.

Obrig, H., Hirth, C., Junge-Huelsing, G. J., Doege, C., Wenzel, R., Wolf, T., … Villringer, A. (1997). Length of resting period between stimulation cycles modulates hemodynamic response to a motor stimulus. Advances in Experimental Medicine and Biology, 411, 471–480.

Obrig, H., & Villringer, A. (1997). Near-infrared spectroscopy in functional activation studies: Can NIRS demonstrate cortical activation? Advances in Experimental Medicine and Biology, 413, 113–127.

Ruben, J., Wenzel, R., Obrig, H., Villringer, K., Bernarding, J., Hirth, C., … Villringer, A. (1997). Haemoglobin oxygenation changes during visual stimulation in the occipital cortex. Advances in Experimental Medicine and Biology, 428, 181–187.

Villringer, K., Minoshima, S., Hock, C., Obrig, H., Ziegler, S., Dirnagl, U., … Villringer, A. (1997). Assessment of local brain activation: A simultaneous PET and near-infrared spectroscopy study. Advances in Experimental Medicine and Biology, 413, 149–153.

Wenzel, R., Obrig, H., Ruben, J., Villringer, K., Dirnagl, U., & Villringer, A. (1996). Cerebral blood oxygenation changes induced by visual stimulation in humans. Journal of Biomedical Optics, 1, 399–404.

Brandt, S. A., Davis, T., Obrig, H., Meyer, B. U., Belliveau, J. W., Rosen, B. R., & Villringer, A. (1996). Functional magnetic resonance imaging shows localized brain activation during serial transcranial stimulation in man. NeuroReport, 7, 734–736.

Hirth, C., Obrig, H., Villringer, K., Thiel, A., Bernarding, J., Muehlnickel, W., … Villringer, A. (1996). Non-invasive functional mapping of the human motor cortex using near-infrared spectroscopy. NeuroReport, 7, 1977–1981.

Kleinschmidt, A., Obrig, H., Requardt, M., Merboldt, K. D., Dirnagl, U., Villringer, A., & Frahm, J. (1996). Simultaneous recording of cerebral blood oxygenation changes during human brain activation by magnetic resonance imaging and near-infrared spectroscopy. Journal of Cerebral Blood Flow & Metabolism, 16, 817–826.

Obrig, H., Heekeren, H., Ruben, J., Wenzel, R., Ndayisaba, J. P., Dirnagl, U., & Villringer, A. (1996). Continuous spectrum near-infrared spectroscopy approach in functional activation studies in the human adult. Proceedings SPIE, 2926, 58–66.

Obrig, H., Hirth, C., Junge-Huelsing, G. J., Doege, C., Wolf, T., Dirnagl, U., & Villringer, A. (1996). Cerebral oxygenation changes in response to motor stimulation. Journal of Applied Physiology, 81, 1174–1183.

Obrig, H., Wolf, T., Doege, C., Junge-Huelsing, G. J., Dirnagl, U., & Villringer, A. (1996). Cerebral oxygenation changes during motor and somatosensory stimulation in humans as measured by near-infrared spectroscopy. Advances in Experimental Medicine and Biology, 388, 219–224.

Wolf, T., Lindauer, U., Obrig, H., Dreier, J. P., Back, T., Villringer, A., & Dirnagl, U. (1996). Systemic nitric oxide synthase inhibition does not affect brain oxygenation during cortical spreading depression (CSD) in rats: A noninvasive near infrared spectroscopy (NIRS) and Laser-Doppler flowmetry (LDF) study. Journal of Cerebral Blood Flow & Metabolism, 16, 1100–1107.

Wolf, T., Obrig, H., Villringer, A., & Dirnagl, U. (1996). Extra- and intracellular oxygen supply during cortical spreading depression in the rat. Advances in Experimental Medicine and Biology, 388, 299–304.