1. Bromm B.: Consciousness, pain, and cortical activity.In: Bromm B. and Desmedt J.E. (Eds),Pain and the Brain: From Nociception to Cognition New-York, Raven Press,22, 35–59, 1995.
2. Price D.D.: Psychological and neural mechanisms of the affective dimension of pain.Science 288, 1769–1772, 2000.
3. Merskey H. andBogduk N.:In: Int Ass Study of Pain (IASP) (Eds),Classification of chronic pain 2nd ed. Seattle: IASP Press, 1994.
4. Drewes A.M., Nielsen K.M., Arendt-Nielsen L., Birket-Smith L. andHansen L.M.: The effect of cutaneous and deep pain on the electroencephalogram during sleep — An experimental study.Sleep 20, 623–640, 1997.
5. Bonnet M.H.: Sleep deprivation.In: Kryger M.H., Roth T. and Dement W.C. (Eds),Principles and practice of sleep medicine, 3 ed. Philadelphia, W.B. Saunders, 53–71, 2000.