Neurosalience

Neurosalience #S1E7 with Jean Chen, and Molly Bright - The opportunities and challenges of physiologic fMRI

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Apr 16, 2021
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INSIGHT

Brain Vascular and Neural Network Overlap

  • Brain vascular networks may map onto neural networks, complicating signal separation.
  • It may be better to characterize both neural and physiological signals together rather than try to isolate them fully.
ANECDOTE

Jean Embraces Multimodal Imaging

  • Jean Chen integrated EEG with fMRI recently to better differentiate neural from non-neural signals.
  • Multimodal imaging has benefits and challenges but provides complementary physiological perspectives.
INSIGHT

Exploiting Artery-Vein Signal Lag

  • Susceptibility differences between arteries and veins create time-lagged, opposite-sign BOLD signals.
  • This phenomenon allows mapping of cerebral blood transit delays non-invasively with resting state fMRI.
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