![]() ![]() ![]() Doctors can revive people who are on their death beds. For example, how did people figure out the inner workings of the human body and discover it had its own electricity?īecause of these discoveries and exceptional minds, technology has lent itself to life saving inventions. It really makes one wonder how people were able to gather so much information so quickly to get where we are today. Yet, those people spoke the same languages and wore many of the same fabrics. It's natural to wonder.The accomplishments that humans have made in the last five hundred years, and especially the last 100 years, could never have been imagined to the humans who were beginning to discover exploration across the oceans 600 years ago. But whether I'm right or wrong about that, I'd still find it terrifying to see that report. My guess is that it's picking up these other movements. Even though peristalsis (the pushing of food through your digestive tract) stops, some things are still in motion. Bacteria remains alive in the gut (remember, most of the living cells in your body aren't even human), so for a time, those bacteria keep breaking down food. with that pulse gone, does the FitBit start grasping at straws and interpreting other movements as heart rate? After death, the body still moves. If it sees 90 such throbbings per minute, then it reads a heart rate of 90 bpm. Thanks to the light on the back of the FitBit, it can see the change in the diameter of your capillaries as that pulse pushes downstream. When your heart beats, it sends a pulse of blood through your arteries, which also travels through your veins and capillaries. With this light, it can "see" your capillaries. Rather than detecting electrical impulses, it shines light from a light-emitting diode into the skin. Interesting theory, but that's not how the FitBit works. Since fitbit is designed to support those who are actively living, and not specifically meant as a time of death device, it might make sense that it would be set to be very sensitive in order to give the most accurate readings.) That would also explain why a fitbit might read it where a medical device does not. ![]() (As an added thought, medical devices are likely set to only read those impulses above a certain threshold, which prevents them from continuing to give back readings like these after the body stops. Perhaps that theory could, not only explain why an electrically-based device will continue to pick up the electrical impulses we read as a heart rate after the heart has stopped, but also offer some closure to those who have experienced it and might be left wondering. But when the body as a whole has stopped, these electrical signals can no longer trigger anything to happen, and eventually they would fade until they are not happening any more. When the body is living, these impulses would cause things to function, the heart to beat, arteries to contract, sensations to be felt, etc. This wouldn't necessarily indicate life-sustaining activity, brain activity, or potential for resuscitation, but simply that the living organisms which power our body (cells and the activity between them) do not instantly cease to function when the body as a whole stops. (So, basically after brain death and after heart failure, but before all electrical activity has left the body.) If a device like a fitbit instead uses electrical pulses to monitor heart rate, and it is set to be very sensitive (threshold very low), it may pick up residual electrical pulses which may remain in/ continue between the nerves in the body long after the pulses stop being strong enough to actually contract the heart or power the neurons. We typically observe heart rates by feel (pulse on the wrist or neck) or sound (listening for a pulse). This is pure speculation, but I'm going to posit a possible theory: ![]()
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