The events that take place in the brain hours and even days after severe head trauma could be much more devastating than the impact, resulting in loss of brain function -- or worse.
The events that occur with major brain injuries and head trauma may be very similar to a rare but devastating ocean-related disaster. The initial trauma is the first insult to the brain, but what happens in the hours and days afterward may be even worse.
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Neurological events called "brain tsunamis" occur several days after severe head trauma and may be responsible for inducing brain damage, according to a new study. Preventing these tsunamis or "killer waves" could help patients with severe head trauma avoid further brain damage and possibly retain most of their brain function.
The "brain tsunamis" are actually large population of brain cells that undergo massive depolarizations. Much like the weather-related tsunamis, these large waves of depolarizations spread slowly but persistently throughout the brain, causing widespread brain dysfunction.
These wave-like depolarizations have been studied in brain trauma patients for decades. But the new research showed for the first time that brain tsunamis are responsible for causing further brain damage in afflicted patients. The brain tsunamis drew the attention of the U.S. military as head injuries became a very common injury among veterans of the Iraq and Afghanistan wars.