A method of measuring human brain activity includes the steps of simultaneously measuring pulses at two locations on a human subject that each receives blood from a different carotid artery that feeds a respective one of left and right hemispheres of the brain of the human subject, determining pulse...http://www.google.fr/patents/US7547284?utm_source=gb-gplus-shareBrevet US7547284 - Bilateral differential pulse method for measuring brain activity
Bilateral differential pulse method for measuring brain activity