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'Social Dementia' Decimates Special Neurons
By Michael Balter
ScienceNOW Daily News
22 December 2006

Being human has its pluses and minuses. Our cognitive powers are superior to that of other animals, and we can act consciously to alter our destinies. On the other hand, our highly evolved brains are prone to serious malfunctions such as mental illness and dementia. Now a team of neuroscientists has found that some of these blessings and curses might be linked to the same specialized neural circuits.
In 1999, researchers discovered that the brains of humans and great apes such as chimpanzees and gorillas contain special elongated nerve cells called spindle neurons. These cells, also known as Von Economo neurons (VENs), are localized in two parts of the cerebral cortex known to be associated with social behavior, consciousness, and emotion. They are not found in other primates, although very recently they were discovered in some whales (ScienceNO