Posted tagged ‘brain’

Half a Brain

November 26, 2007

half-brain.jpg   To say that someone has half a brain is usually an uncomplimentary slam.  But the brain is a mysterious, compensating, and remarkable organ.  Consider the case of a young adult woman from Wuhan City in China, who was literally born with half a brain.  Completely unaware of this anomaly, she functioned well and was only recently diagnosed with this rare condition when doctors ran an MRI while examining the woman for complaints of weakness.  A congenital condition, the woman’s half a brain had assumed the functions normally shared among two hemispheres.

A handful of others have also existed successfully with half a brain when a portion is removed due to disease or traumatic injury.  The brains of children are especially adept at adjusting to trauma that might be devastating in mature adults.

Brain-Eating Amoebas!

September 30, 2007

amoeba.jpg        Yes…brain-eating amoebas are real, and live in lakes!  It sounds like B-grade science fiction, but they enter the body through the nose and attack the brain, where they feed until you die!

The amoeba, called Naegleria fowleri, killed 23 people in the United States from 1995 to 2004.  The Centers for Disease Control and Prevention know of only several hundred cases worldwide since the discovery of the amoeba in Australia in the 1960’s.  Infections tend to be found in southern states, and people become infected when they wade through shallow water and stir up the bottom.  If someone allows water to shoot up the nose the amoeba can latch onto the olfactory nerve, destroying tissue as it makes its way up into the brain where it continues the damage, basically feeding on the brain cells.–Isn’t that a happy thought?

The infection is usually fatal within two weeks.  Early syptoms are a stiff neck, headache, and fever; later symptoms are hallucinations and behavioral changes.  The amoebas can live in lakes, hot springs, and even dirty swimming pools, living off algae and bacteria in the sediment. 

And to think, I had been worried about zombies eating my brain (although it would be a starvation diet)!