[1] S. S. Kety and C. F. Schmidt, (1948) The nitrous oxide method for the quantitative determination of cerebral blood flow in man: Theory, procedure and normal values, J. Clin. Invest. 27, 476-483.
[2] H. I. Glass and A. M. Harper, (1963) Measurement of regional blood flow in cerebral cortex of man through intact skull, Br. Med. J., 1, 593.
[3] D. E. Kuhl and R. Q. Edwards, (1963) Image separation radioisotope scanning, Radiology, 80, 653-661.
[4] H. Berger, (1929) über das elektrenkephalogramm des menschen, Arch. Psychiatr Nervenkr, 87, 527-570.
[5] Veopen, (1995) Magnetic resonance imaging of brain function, Magn. Reson. Med., 22, 149-166.
[6] K. R. Thulborn, J. C. Waterton, P. M. Matthews, and G. K. Radda, (1982) Oxygen dependence of the transverse relaxation time of water protons in whole blood at high field, Biochim. Biophys. Acta., 714, 265-270.
[7] S. Ogawa, T. M. Lee, A. S. Nayak, and P. Glynn, (1990) Oxygenation-sensitive contrast in magnetic resonance image of rodent brain at high magnetic fields, Magn. Reson. Med., 14, 68-78.
[8] S. Ogawa and T. M. Lee, (1990) Magnetic resonance imaging of blood vessels at high fields: In vivo and in vitro measurements and image simulation, Magn. Reson. Med., 16, 9-18.
[9] P. T. Fox, M. E. Raichle, M. A. Mintun, and C. Dence, (1988) Nonoxidative glucose consumption during physiologic neural activity, Science, 241, 462-464.