6 ms·
While RT-fMRI is an incremental technological advance (it's just faster data collection with some spiffy signal processing) it hugely broadens the scope of fMRI
by viergroupie 19y ago
While RT-fMRI is an incremental technological advance (it's just faster data collection with some spiffy signal processing) it hugely broadens the scope of fMRI's usability. The hemodynamic delays of traditional fMRI are atrocious. For the first time fMRI is giving us access to when brain activity happens, which is nearly as importnat as knowing where. If you look at the biofeedback work being done with RT-fMRI you'll see it's extremely exciting.
Also, I don't view the depth restriction of EROS as a very big problem. There are enough mysteries lurking in the top 3 centimeters of your brain to keep academia busy for a hundred years.
- robg 19y agoI don't know about the BOLD delay being "atrocious". We get good temporal resolution and it's getting better and better (hundreds of milliseconds for some paradigms). I agree though - the biofeedback stuff is very exciting. As for below the first few centimeters, that's where the control network is in mid-brain structures. That's kind of important, and if EROS can't penetrate deeper and with precision it's not likely to be widely adopted.
- viergroupie 19y agoI think part of the reason neuro-imaging is so preoccupied with midbrain structures at the moment is because their activity is simpler and easier to correlate to the brain's inputs or outputs. With the huge boost in both spatial and temporal resolution EROS provides we can put more focus where the cognitive action is (the cortex).