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The aforementioned Dr. Fink believed the brain might remain conscious as long as 15 seconds; that's how long cardiac arrest victims last before blacking out. (Dr. Fink's colleague put the window of awareness at 5 seconds.) He also pointed out that people have remained alert after having had their spinal cords severed.his was proven when a scientist condemned to the guillotine in the 1700s told his assistant to watch and that he would blink as many times as he could. The assistant counted fifteen to twenty blinks after the head was severed, the blinks coming at intervals of about one second. So the head does remain briefly alive.
The left hemisphere has 186 million more neurons than the right hemisphere How much blood flows through the brain per minute? 750-1000mL or 3 full soda cans How long can the brain survive without oxygenated blood? 4-6 minutes before the cells begin to die. After 10 seconds you loose consciousness How much of your body heat is lost through your head? 40-50% What is the longest living cell in your body? Your brain cells can live up to an entire lifetime How many brain cells (neurons) does the average human have? 100 billion What is the name of the chemical signal used between neurons? Neurotransmitters How long can a neuron be? Around 15 feet, in a Giraffe, from toe to neck How many brain imaging techniques can you name?