Sleep Deprivation:
25% (In brain stem [LC cells]) brain neuron loss from 3 day fragmented sleep (4-5 hours/day)
40% (In brain stem [LC cells]) brain neuron loss from 4 days without sleep
Blunt Force Trauma:
7% strained neurons die after 12 hours
12% strained neurons die after 7 hours
All strained neurons die after 2.5 days
50 joule (kinetic energy) impact to head has 5% chance of causing unconsciousness
30 joule (kinetic energy) impact to head can cause brain damage if repetitive
80 joule (kinetic energy) impact to head has 50% chance of causing unconsciousness
All unconsciousness from blunt force trauma is brain damage
Oxygen Deprivation:
Brain cells begin to die after 1 minute without oxygen (or when unconsciousness occurs)
Unconsciousness occurs after 30-180 seconds without oxygen
Average person can hold breathe for 30(SD=10) seconds
No comments:
Post a Comment
Note: Only a member of this blog may post a comment.