Pain, autonomic activation and muscular activity related to experimentally-induced cognitive stress in headache patients

part of the study " Autonomic activation and pain " , investigating responses to low-grade stress in patients with migraine, tension-type headache, fibromyalgia and chronic shoulder/neck pains. (" Samarbeidsorganet "). I wish to express my sincere gratitude to a number of people who I have had the pleasure to work with over the last years: first of all I wish to thank my supervisors Trond Sand and Lars Jacob Stovner, for their brilliant and enthusiastic supervision. They patiently introduced me to the fields of headache, neurophysiology and statistics, and they have guided and encouraged me during my work here. I truly could not have asked for more. I also wish to thank my co-supervisor Linda White for her great supervision, and for accepting me as a diploma student back in 2003. Our discussions over countless cups of tea have meant a lot to me. Furthermore I wish to thank my co-author and office partner Kristian Bernhard Nilsen for his valuable comments and companionship, and co-author Rolf Westgaard for his major contributions to this field and to this thesis. I also thank my collegues Marit Stjern, Sylvia Nome Kvam and Grethe Helde for their contributions during the data collection. I am most grateful to my mother Astrid, my brother Espen, and Finn-Erik, for their support over the years, and to my dear Nicola, for her love and encouragement. I could not have done this without you all. This thesis is dedicated to my father. I wish he was still with us. " Stress-induced pain and muscle activity in patients with migraine and tension-type headache. " Cephalalgia 26(1): 64-73. " Cardiovascular responses to cognitive stress in patients with migraine and tension-type headache. " Submitted. 2007. " Noradrenaline and cortisol changes to low-grade cognitive stress differ in migraine and tension-type headache. " J Headache Pain 8:71-76.