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Say that someone was measuring their own brain data at home using an EEG headset. What DIY/low-cost clinical solution might be able to provide biomarkers (AKA d
by bbor 2y ago
Say that someone was measuring their own brain data at home using an EEG headset. What DIY/low-cost clinical solution might be able to provide biomarkers (AKA data that you've timestamp-synced to brain data to help a multimodal model) for breath rate/depth? Anyone familiar with the research or relevant companies, or have a wacky MacGyver proposal to get it done on the cheap? My first guesses:
1. Wearing a sticker on the chest seems right out, but a fannypack/messenger-bag like device that fits under a shirt could work. Could also be a good addition to an overall mobile-monitoring setup for EEG data -- you could even move the batteries and bluetooth components from your head/belt to the square of your back. This would obviously only work over a shirt though, which seems like it would make getting high quality breath data harder.
2. I mean... dare I just ignore the physical sciences and aim a high quality camera at myself? To what extent is a microphone in your glasses + footage of your chest rising and falling enough? Sorta doubting anyone here has experience here but you never know!
3. I vaguely know that people measure things with lasers -- this could be enough for measuring breathing while seated at a desk perhaps! And surely the most accurate by far, disregarding noise from clothing.
If I ever get to this point, I look forward to trying all these before hitting up google scholar for the boring easy answer...
- fellerts 2y agoFor what purpose? If you just want to know your respiratory rate, respiration belts are simple and very effective. You should be able to MacGyver your own with limited electronics skills: https://www.instructables.com/Quick-and-dirty-Respiration-Sensor/ https://www.instructables.com/Quick-and-dirty-Respiration-Se.... > To what extent is a microphone in your glasses + footage of your chest rising and falling enough? I'm sure a skilled computer vision engineer could make this work, but I'd argue it's the wrong approach. Lasers might work as well, but I think your best bet is radar. I know there are companies making doppler radar-based systems for tracking respiratory rate. Can't dig for them at the moment but here's an article about the method: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10172641/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10172641/. By the way, heart-rate variability correlates strongly with respiratory rate. As far as I understand, this is because inhalation raises your blood pressure which increases your heart rate. Using a pulse oxymeter, you should be able to extract respiratory rate from the raw PPG data. Should be effective if you're otherwise healthy and reasonably young. HRV decreases with age and illness. https://pubmed.ncbi.nlm.nih.gov/34024811/ https://pubmed.ncbi.nlm.nih.gov/34024811/