Tuesday, October 21, 2008

Lab humans

Remember those mice on Mount Everest?

There may be a good reason for them to limit their mountain-climbing expeditions. It might shrink their brains.

have studied human mountain climbers and found reduced volume and density of white and gray matter in areas of the brain associated with motor activity.

It is not known if this phenomenon is relevant to mouse health, but it suggests that mice should use caution when participating in high-altitude activities.