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Geoffrey Boynton; A comparison of electrophysiology and fMRI signals in area V1. Journal of Vision 2015;15(12):1417. doi: 10.1167/15.12.1417.
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© 2017 Association for Research in Vision and Ophthalmology.
fMRI measures in area V1 typically show remarkable consistency with what is expected from monkey electrophysiology studies. However, discrepancies between fMRI and electrophysiology appear for non-stimulus driven factors such as attention and visual awareness. I will discuss possible explanations for these discrepancies, including the role of LFP’s in the hemodynamic coupling process, the effects of feedback and timing, and the overall sensitivity of the BOLD signal.
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