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Off-response in frog taste nerve and cell after stimulation of the tongue with bitter solutions
Affiliation:1. Center on Nanoenergy Research, School of Physical Science and Technology, Guangxi University, Nanning 530004, PR China;2. Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 100083, PR China;3. College of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing 100049, PR China;4. School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0245, USA;1. Center for Computational Biology, Simons Foundation, New York, NY 10010, USA;2. Department of Statistics, Center for Theoretical Neuroscience, and Grossman Center for the Statistics of Mind, Columbia University, New York, NY 10027, USA;3. Department of Biochemistry and Molecular Biophysics and Howard Hughes Medical Institute, Columbia University, New York, NY 10032, USA;4. Department of Neuroscience and Kavli Institute of Brain Science, Columbia University, New York, NY 10032, USA;5. Zuckerman Mind Brain Behavior Institute, Columbia University, New York, NY 10032, USA;6. Howard Hughes Medical Institute, Janelia Research Campus, Ashburn, VA 20147, USA;7. Neurotechnology Center, Department of Biological Sciences, Columbia University, New York, NY 10027, USA;1. CIBIO Research Centre in Biodiversity and Genetic Resources, InBIO, Universidade do Porto, Campus Agrário de Vairão, Rua Padre Armando Quintas, No. 7, 4485-661 Vairão, Vila do Conde, Portugal;2. 26 Rockfield Gardens, Collydean, Glenrothes, Fife, KY7 6SZ Scotland, UK;3. National Institute of Biology, Večna pot 111, SI-1000 Ljubljana, Slovenia;1. Department of Neuroscience, Division of Biology and Medicine, Brown University, Providence, RI 02912, USA;2. The Robert J. and Nancy D. Carney Institute for Brain Science, Brown University, Providence, RI 02912, USA
Abstract:
  • 1.1. After a Ringer-adapted frog tongue was stimulated with quinine-HCl (Q-HCl), rinsing the tongue with the Ringer produced a large off-response in the glossopharyngeal nerve.
  • 2.2. The off-response was caused by the enhancing action of Q-HCl stimulation upon the stimulating effectiveness of an NaCl component of Ringer solution.
  • 3.3. Analysis of gustatory neural unit responses showed that following Q-HCl stimulation the enhancement of responses to Ringer of those units which responded to both Q-HCl and Ringer or Ringer alone is related to the generation of the off-response.
  • 4.4. A phasic off-depolarization of taste cells elicited by a Ringer rinse following Q-HCl stimulation is thought to be associated with the off-response in the gustatory nerve.
Keywords:
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