Biomagnetic Imaging Laboratory
Srikantan S. Nagarajan, Ph.D., Director, 415/476-4982

The Biomagnetic Imaging Laboratory is a shared clinical and research facility in the Department of Radiology at UCSF. The laboratory primarily conducts basic and clinical research on brain function with a focus on Electromagnetic source imaging (ESI). The laboratory also provides clinical services such as functional brain mapping in patients with brain tumors and arteriovenous- malformations, and epileptic zone localization in patients with epilepsy.
More from the Biomagnetic Imaging Laboratory site.

Read an article on the Advances in Electromagnetic Source Imaging. (pdf)

Research Directions:

• Development of machine learning algorithms and tools for functional brain imaging and for brain machine interfaces
• Development of clinical applications for electromagnetic source imaging
• Neuroimaging of sensory feedback processing during motor actions
• Imaging of spatiotemporal plasticity associated with perceptual learning
• Integration of multi-modal and multi-scale imaging of dynamic and noisy cortical representations

Recent Key References:

K.E. Hild, H.T. Attias, Comani S., and S.S. Nagarajan, “Fetal cardiac signal extraction from magnetocardiographic data using a probabilistic algorithm”, in press, Signal Processing (Invited paper)

K.E. Hild, Alleve G, S.S. Nagarajan, and Comani S., “Performance comparison of six Independent Components Analysis algorithms for fetal signal extraction from real fMCG data”, in press, Physics in Biology and Medicine

Wassenhove VV and Nagarajan SS, Auditory cortical plasticity in modulation rate discrimination learning, in press, J. Neuroscience

Nagarajan S.S., Attias H.T., Hild K.H. and Sekihara K., “Probabilistic Algorithm for Robust Interference Suppression in Bioelectromagnetic Data”, in press, Statistics in Medicine (Invited paper).

Hild KE, Nagarajan SS, Source Localization Of Eeg/Meg Data By Correlating Columns Of ICA Solution With Lead Field Matrix, ICASSP 2007

Hairston IS and Nagarajan SS, Neural mechanisms of time-order errors, in press, J. Cognitive Neuroscience.

Zumer JM, Attias HT, Sekihara K and Nagarajan SS, “A probabilistic algorithm for interference suppression and source reconstruction from MEG/EEG data”, Advances in Neural Information Processing System, 2006.

Heinks-Maldanado T, Nagarajan SS, Houde JF, “Magnetoencephalographic evidence for a precise forward model in speech production”, 2006 Sep 18;17(13):1375-9. Neuroreport.

Canolty RT, Edwards E, Dalal SS, Soltani M, Nagarajan SS, Kirsch HE, Berger MS, Barbaro NM, Knight RT., “High gamma power is phase-locked to theta oscillations in human neocortex”, Science. 2006 Sep 15;313(5793):1626-8.

Berman, J. Henry, R., Nagarajan S.S. and Berger, M.S., “Accuracy of diffusion tensor MRI tractography assessed with intraoperative subcortical stimulation and magnetic source imaging”, in press, J. Neurosurgery.