Blind-Spot Mapping, Cortical Function, and Chiropractic Manipulation

Steven Novella recently wrote about so-called “chiropractic neurology” and its most outspoken proponent, Ted Carrick.  In 2005 I published an article in The Scientific Review of Alternative Medicine (Vol 9, No 1, p. 11-15) entitled “Blind-Spot Mapping, Cortical Function, and Chiropractic Manipulation.” It was an analysis of a study Carrick had published. Carrick read a shorter,

Brain Balance

A member of Quackwatch’s Healthfraud discussion list recently reported from a health fair: One booth was a bit of a mystery for me: Brain Balance. “Is your child struggling with ADHD, dyslexia, autism, Asperger’s, Tourette’s, or other related disorders?” A quick glance at their website makes it seem that they may be legitimate. No, a

Blind Spot Mapping: A Dubious Aspect of “Chiropractic Neurology”

Several hundred practitioners, mostly chiropractors, are offering a simple paper-and-pencil test that they say can tell how your brain is functioning [1]. They call it “blind spot mapping,” “brain function testing,” “brain mapping,” or “cortical mapping.” They claim that this test can detect an enlarged blind spot in one eye, that the enlarged blind spot