[1] Baylor Coll Med, Dept Radiol, Houston, TX 77030 USA
[2] Baylor Coll Med, Dept Psychiat & Behav Sci, Houston, TX 77030 USA
[3] Baylor Coll Med, Herbert J Frensley Ctr Imaging Res, Houston, TX 77030 USA
[4] NINCDS, Neuroimaging Branch, NIH, Bethesda, MD 20892 USA
[5] Univ Queensland, Ctr Magnet Resonance, Brisbane, Qld, Australia
[6] Inst Neurol, Epilepsy Res Grp, London WC1N 3BG, England
[7] Inst Psychiat, Dept Neuroimaging, London, England
[8] Vet Affairs Med Ctr, Psychiat Serv, Houston, TX 77030 USA