Why the Brain and Body are Cross Wired

Flickr creative commonsSomeone who suffers a stroke in their left cerebral hemisphere will lose control over the right side of their body.  Every doctor relies upon this well-known fact in performing neurological exams, but when I asked my doctor last week why this should be, all I got was a shoulder shrug.  So I asked Professor Catherine Carr, a neuroscientist at the University of Maryland, College Park the same question –“No good answer,” she replied.  Wow!  Such a fundamental property of how our brain and body are wired together and no one seems to know why?

To find out, see Quanta article:  Why the Brain’s Connections to the Body are Crisscrossed

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