REDWOOD CITY, Calif.--(BUSINESS WIRE)--Autonomic Technologies, Inc. (ATI), the developer of the ATI Neurostimulation System designed for the treatment of severe headaches, today announced results of their clinical study in cluster headache, now published online in Cephalalgia.1 The robust, multi-centre, randomized, placebo-controlled clinical study is the largest study performed with a medical device for cluster headache.