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Lab Meeting: November 13, 2009
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Every other Friday at 2:00pm
Neurological Institute Library, 14th Floor
WHAT BRAIN HEMODYNAMICS MAY OR MAY NOT TELL US ABOUT NEURAL ACTIVITY
Presented by Aniruddha Das and Yevgeniy Sirotin.
We will discuss two sets of current findings about the neural underpinnings of brain hemodynamics. First we will talk about components of the brain hemodynamic signal that may be unrelated to any local neural activity. This is based on our finding of a robust anticipatory hemodynamic signal in V1 that entrains to rhythmic visual tasks even in the absence of any visual input or causal local neural signals. Next we will talk about neurally evoked hemodynamic signals and evidence showing that these signals are not driven by deoxygenation of the blood.