Cost-Effective Magnetoencephalography Based on Time Encoded Optical Fiber Interferometry for Epilepsy and Tinnitus
Technical Report,10 Dec 2014,09 Jun 2016
University of California Irvine United States
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Functional neuroimaging is critical to the understanding and diagnosis of neurological disorders especially Epilepsy and Tinnitus. Both conditions severely harm servicemen and veterans wellbeing and combat capability, but are difficult to diagnose with anatomical tools like MRI and CT due to the functional nature of these disorders. In contrast Magnetoencephalography MEG, which spatially monitors brain activities in real time has been proven effective at studying, screening and diagnosing Epilepsy and Tinnitus, providing insightful information for surgical treatments. The proposed MEG technique is based on two major innovations, whose feasibility will be tested in this project. I Interferometric magnetic detection A Sagnac fiber interferometer will be constructed and used to perform magnetic sensing by measuring the magnetic-field-induced optical phase shift in optically pumped Rubidium Rb vapor placed outside patients head. This interferometric technique is expected to be more sensitive than existing atomic magnetometers.
- Medicine and Medical Research