According to RIA Novosti, the brain can remain active from a few seconds to ten minutes after the heart has stopped.
A 2013 study by researchers at the University of Michigan School of Medicine found that rats’ brains remain alive for up to 30 seconds after their heart stops.
This suggested that he somehow uses a previously undiscovered mechanism for processing information at high speed.
In the new study, the researchers tested their theory on ICU patients who had just suffered a cardiac arrest. They were removed from life support and continued to record electrocardiograms (ECGs) and electroencephalograms (EEGs).
Within minutes of being disconnected from the ventilator, two patients experienced bursts of gamma waves and an increase in heart rate, both signs that certain parts or areas of their brains were still working.
The greatest activity was recorded in the “hot” zone of neural correlates of consciousness, which is located at the intersection of three areas of the brain: occipital, parietal and temporal. This zone is the source of dreams, visual hallucinations, and altered states of consciousness, including those that occur during epileptic seizures.
Thus, the passage of gamma waves indicates that brain cells are still functioning smoothly after cardiac arrest. RIA News .
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