BRAIN SIGNALS
268 miles/hour
The speed of these signals depends on how fast the exchange of charged ions is inside and outside of the cell membrane. The main ions involved are sodium, potassium, chloride, and calcium. Without going into details, I can say that messages in the brain can travel at speeds up to 268 miles/hour
http://scienceline.ucsb.edu/getkey.php?key=1950
268 miles/hour = 393 foot/sec
BULLETS
2,500 feet per second
Bullets. The average bullet travels at 2,500 feet per second (around 1,700 mph). If you reacted to the sound of the gun going off and required 0.20 seconds (twice that of the fastest Olympic sprinters) to react, then you would need to be at least 500 feet away to successfully dodge a bullet.
http://www.mythbusterstheexhibition.com/science-content/dodge-a-bullet/
2,500 feet per second = 1704 miles/hour
Brain signals - 393 foot/sec
Bullet - 2,500 foot/sec
Bullet 6.36 times faster
Draw your own conclusions
No survivers if my calculations are correct
Don't know if you would consider the calculations "scientific knowledge"
I have looked after a patient who shot himself in the head. Surgion saved him and after many years he was semi independent
Based on my calculations NO