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

Blind Spots, Brain Maps, and Backaches: A New Chiropractic Delusion

My trip down the rabbit hole started when an ad in the newspaper caught my eye: “Do you have a good brain or a bad brain? One simple test may tell you… call today for a free brain exam.” I started to worry. I had always thought I had a pretty good brain, but what

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