This paper is only available as a PDF. To read, Please Download here.
      To read this article in full you will need to make a payment

      Purchase one-time access:

      Academic & Personal: 24 hour online accessCorporate R&D Professionals: 24 hour online access
      One-time access price info
      • For academic or personal research use, select 'Academic and Personal'
      • For corporate R&D use, select 'Corporate R&D Professionals'


      Subscribe to Veterinary Anaesthesia and Analgesia
      Already a print subscriber? Claim online access
      Already an online subscriber? Sign in
      Institutional Access: Sign in to ScienceDirect


        • Crook J.H.
        The Evolution of Human Consciousness. Oxford Univ. Press, 1980
        • Desmedt J.E.
        Clinical uses of cerebral, brainstem and somato-sensory evoked potentials. in “Progress in Clinical Neurophysiology”, Vol. VII. Karger, Basel1980
        • Dubuisson D.
        • Dennis S.G.
        Pain. 1977; 4: 161-174
        • Heiss W.D.
        • Phelps M.E.
        “Position emission tomography of the brain”. Springer, Berlin1983
        • Lewis T.
        “Pain”. MacMillan Press, 1942
        • Leyhausen P.
        “Cat Behaviour”. Garland Press, New York1979
        • Lorenz K.
        Symp. Soc. exp. Biol. 1950; 4: 221-268
        • Melzack R.
        Pain. 1975; 1: 277-299
        • Reid J.E.
        • Inbau F.E.
        Truth and Deception: The Polygraph (Lie Detector) Technique. 2nd ed. Williams and Wilkins, Baltimore1977
        • Sherrington C.S.S.
        “Shafer's Textbook of Physiology”. Vol. 2. Y.J. Pentland, Edinburgh and London1900
        • Tinbergen N.
        Z. Tierspsychol. 1963; 20: 404-434
        • Walker S.
        ) “Animal Thought”. Routledge and Kegan Paul, London1983
        • I.A.S.P.
        Pain. 1979; 6: 250