Abstract #3513
Detection of Human Neuronal Currents with Phase MRI
Jie Huang 1 and David C. Zhu 1,2
1
Department of Radiology, Michigan State
University, East Lansing, MI, United States,
2
Department
of Psychology, Michigan State University, East Lansing,
MI, United States
Brain activity-associated neuronal currents produce weak
transient magnetic fields that would affect both
magnitude and phase of the local MR signal. Recent
studies show that the neuronal current-induced MR signal
attenuation is too weak to be reliably detected with
present magnitude MRI techniques. This study
demonstrates that the visual stimulus-evoked neuronal
currents in the visual cortex do not induce detectable
phase signal changes either. The reduction of temporal
phase noise level will be needed to achieve such
detection.
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