Dan HandwerkerGreat talks at #OHBM2023 by Bharat Biswal and Molly Bright, but also a nice contrast. Bharat spent years trying to convince people that resting state fMRI isn't all vascular and now Molly is trying to convince resting state researchers that vascular variation is important and can be neurally relevant.
Manjari Narayan@DanHandwerker Great point. We keep attributing a lot of fMRI variation to underlying Neuro but vascular alone may be important in its own right.
Jo Etzel@NeuroStats @DanHandwerker And don't forget swallowing ... (Jonathan Power showed some beautiful activity caused by swallowing this morning.)
@JosetAEtzel @NeuroStats Looking at the swallowing data, it seemed like a mini-breath hold (artifact), sometimes head movement (artifact), and a neural activity we can monitor. Unfortunately the conversation seemed to focus primarily on calling it purely an artifact to remove.
@DanHandwerker @JosetAEtzel The tricky thing about movement and swallowing is that it both causes artifacts and genuine neural activity which may or may not be relevant.
@NeuroStats @JosetAEtzel The neural activity is as relevant as wiggling toes or thinking about what they plan to do later in the day.
@DanHandwerker @JosetAEtzel Yeah, I mean I usually don't expect it to be. But if they are genetically correlated with other traits then I don't want to rule out that possibility. But yeah, I agree those are rarely relevant.