Convergence of Afferents from Superior Sagittal Sinus and Tooth Pulp on Cells in the Thalamus of The Cat

DOI Web Site 1 Citations
  • H Angus-Leppan
    Institute of Neurological Sciences, The Prince Henry and Prince of Wales Hospitals, School of Medicine, University of New South Wales, Australia
  • B Olausson
    Institute of Neurological Sciences, The Prince Henry and Prince of Wales Hospitals, School of Medicine, University of New South Wales, Australia
  • P Boers
    Institute of Neurological Sciences, The Prince Henry and Prince of Wales Hospitals, School of Medicine, University of New South Wales, Australia
  • GA Lambert
    Institute of Neurological Sciences, The Prince Henry and Prince of Wales Hospitals, School of Medicine, University of New South Wales, Australia

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Abstract

<jats:p> We have previously shown convergence of craniovascular and tooth pulp afferents in the cervical spinal cord of cats. This study looked for similar convergence in the thalamus. Fifty-four thalamic cells with input from tooth pulp, superior sagittal sinus, or both, were identified. Twenty-nine cells with tooth pulp and superior sagittal sinus input were located in the ventrobasal complex or the intralaminar nuclei. Most of these 29 cells were also excited by cooling the contralateral tooth pulp, and 21 had receptive fields on the contralateral face or forelimb. Twenty cells excited by stimulation of superior sagittal sinus, and not tooth pulp, were found in several nuclei. The 5 cells excited by stimulation of tooth pulp, but not sagittal sinus, were restricted to the ventrobasal complex. The data confirm convergence from sagittal sinus, tooth pulp, and skin in the thalamus of anaesthetized cats. </jats:p>

Journal

  • Cephalalgia

    Cephalalgia 15 (3), 191-199, 1995-06

    SAGE Publications

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