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Sunday, February 9, 2014

Criminal Justice Quote: The Psychology of Being Shot

     ….If it takes ten or twelve seconds to lose consciousness from blood loss (and consequent oxygen deprivation to the brain), why, then, do people who have been shot so often collapse on the spot? It doesn't just happen on TV.

     I posed this question to Duncan MacPherson, a respected ballistics expert and consultant to the Los Angeles Police Department. MacPherson insists the effect is purely psychological. Whether or not you collapse depends on your state of mind. Animals don't know what it means to be shot, and, accordingly, rarely exhibit the instant stop-and-drop….

     Not everyone agrees with the psychological theory. There are those who feel that some sort of neural overload takes place when a bullet hits….An area of the brain called the reticular activating system (RAS) is responsible for the sudden collapse. The RAS can be affected by impulses arising from massive pain sensations in the viscera. Upon receiving these impulses, the RAS sends out a signal that weakens certain leg muscles, with the result the person drops to the ground….

Mary Roach, Stiff, 2003 

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