Publications of Hellmuth Obrig

Journal Article (106)

2001
Journal Article
Wobst, P.; Wenzel, R.; Kohl, M.; Obrig, H.; Villringer, A.: Linear Aspects of Changes in Deoxygenated Hemoglobin Concentration and Cytochrome Oxidase Oxidation during Brain Activation. NeuroImage 13, pp. 520 - 530 (2001)
2000
Journal Article
Benaron, D. A.; Hintz, S. R.; Villringer, A.; Boas, D.; Kleinschmidt, A.; Frahm, J.; Hirth, C.; Obrig, H.; van Houten, J. C.; Kermit, E. L. et al.; Cheong, W. F.; Stevenson, D. K.: Noninvasive functional imaging of human brain using light. Journal of Cerebral Blood Flow & Metabolism 20, pp. 469 - 477 (2000)
Journal Article
Obrig, H.; Neufang, M.; Wenzel, R.; Kohl, M.; Steinbrink, J.; Villringer, A.: Spontaneous low frequency oscillations of cerebral hemodynamics and metabolism in human adults. NeuroImage 12 (6), pp. 623 - 639 (2000)
Journal Article
Obrig, H.; Wenzel, R.; Kohl, M.; Horst, S.; Wobst, P.; Steinbrink, J.; Thomas, F.; Villringer, A.: Near-infrared spectroscopy: does it function in functional activation studies of the adult brain? International Journal of Psychophysiology 35 (2-3), pp. 125 - 142 (2000)
Journal Article
Steinbrink, J.; Kohl, M.; Obrig, H.; Curio, G.; Syre, F.; Curio, G.; Syre, F.; Thomas, F.; Wabnitz, H.; Rinneberg, H. et al.; Villringer, A.: Somatosensory evoked fast optical intensity changes detected non-invasively in the adult human head. Neuroscience Letters 291, pp. 105 - 108 (2000)
Journal Article
Wenzel, R.; Wobst, P.; Heekeren, H.; Kwong, K. K.; Brandt, S. A.; Kohl, M.; Obrig, H.; Dirnagl, U.; Villringer, A.: Saccadic suppression induces focal hypooxygenation in the occipital cortex. Journal of Cerebral Blood Flow & Metabolism 20, pp. 1103 - 1110 (2000)
1999
Journal Article
Heekeren, H. R.; Kohl, M.; Obrig, H.; Wenzel, R.; Pannwitz, W. V.; Matcher, S. J.; Dirnagl, U.; Cooper, C. E.; Villringer, A.: Noninvasive Assessment of Changes in Cytochrome-C-Oxidase Oxidation in Human Subjects during Visual Stimulation. Journal of Cerebral Blood Flow & Metabolism 19, pp. 592 - 603 (1999)
1998
Journal Article
Kohl, M.; Nolte, C.; Heekeren, H. R.; Horst, S.; Scholz, U.; Obrig, H.; Villringer, A.: Determination of the wavelength dependence of the differential pathlength factor from near infrared pulse signals. Physics in Medicine and Biology 42, pp. 1171 - 1182 (1998)
1997
Journal Article
Heekeren, H.; Obrig, H.; Wenzel, R.; Eberle, K.; Ruben, J.; Villringer, K.; Kurth, R.; Villringer, A.: Cerebral haemoglobin oxygenation during sustained visual stimulation: A near–infrared spectroscopy study. Proceedings of the Royal Society of London Series B-Biological Sciences 352 (1354), pp. 743 - 750 (1997)
Journal Article
Arnold, G.; Kinze, S.; von Pannewitz, H.; Obrig, H.; Villringer, A.: Kann man den Blutfluss während der Migräne-Attacke messen? Med-Report 26, p. 6 (1997)
Journal Article
Heekeren, H. R.; Wenzel, R.; Obrig, H.; Ruben, J.; Ndayisaba, J. P.; Luo, Q.; Dale, A.; Nioka, S.; Kohl, M.; Dirnagl, U. et al.; Villringer, A.; Chance, B.: Towards noninvasive optical human brain mapping - improvements of the spectral, temporal and spatial resolution of near-infrared spectroscopy. Proceedings SPIE 2979, pp. 847 - 857 (1997)
Journal Article
Hirth, C.; Obrig, H.; Valdueza, J.; Dirnagl, U.; Villringer, A.: 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, pp. 461 - 469 (1997)
Journal Article
Hirth, C.; Obrig, H.; Villringer, K.; Bernarding, J.; Thiel, A.; Dirnagl, U.; Villringer, A.; Mühlnickl, W.: Towards brain mapping combining near-infrared spectroscopy and high resolution 3D MRI. Advances in Experimental Medicine and Biology 413, pp. 139 - 147 (1997)
Journal Article
Obrig, H.; Hirth, C.; Junge-Huelsing, G. J.; Doege, C.; Wenzel, R.; Wolf, T.; Dirnagl, U.; Villringer, A.: Length of resting period between stimulation cycles modulates hemodynamic response to a motor stimulus. Advances in Experimental Medicine and Biology 411, pp. 471 - 480 (1997)
Journal Article
Obrig, H.; Villringer, A.: Near-infrared spectroscopy in functional activation studies: Can NIRS demonstrate cortical activation? Advances in Experimental Medicine and Biology 413, pp. 113 - 127 (1997)
Journal Article
Ruben, J.; Wenzel, R.; Obrig, H.; Villringer, K.; Bernarding, J.; Hirth, C.; Heekeren, H.; Dirnagl, U.; Villringer, A.: Haemoglobin oxygenation changes during visual stimulation in the occipital cortex. Advances in Experimental Medicine and Biology 428, pp. 181 - 187 (1997)
Journal Article
Villringer, K.; Minoshima, S.; Hock, C.; Obrig, H.; Ziegler, S.; Dirnagl, U.; Schwaiger, M.; Villringer, A.: Assessment of local brain activation: A simultaneous PET and near-infrared spectroscopy study. Advances in Experimental Medicine and Biology 413, pp. 149 - 153 (1997)
1996
Journal Article
Wenzel, R.; Obrig, H.; Ruben, J.; Villringer, K.; Dirnagl, U.; Villringer, A.: Cerebral blood oxygenation changes induced by visual stimulation in humans. Journal of Biomedical Optics 1 (4), pp. 399 - 404 (1996)
Journal Article
Brandt, S. A.; Davis, T.; Obrig, H.; Meyer, B. U.; Belliveau, J. W.; Rosen, B. R.; Villringer, A.: Functional magnetic resonance imaging shows localized brain activation during serial transcranial stimulation in man. NeuroReport 7, pp. 734 - 736 (1996)
Journal Article
Hirth, C.; Obrig, H.; Villringer, K.; Thiel, A.; Bernarding, J.; Muehlnickel, W.; Flor, H.; Dirnagl, U.; Villringer, A.: Non-invasive functional mapping of the human motor cortex using near-infrared spectroscopy. NeuroReport 7, pp. 1977 - 1981 (1996)
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