The CNS weighting of external and internal factors in feeding behavior

Harvey J. Grill, Edgar E. Coons

Research output: Contribution to journalArticlepeer-review


CNS weighting of sweet taste and internal signals was determined by matching food sucrose concentration and pulse frequency of hypothalamic stimulation to maintain a constant feeding bout. The slope of the derived power function, -0.260, indicates that changes in internal signals are weighted much more heavily than changes in sucrose concentration in determining feeding behavior. This is the first demonstration of a mathematical relationship specifying the relative weights of external and internal factors. The relative weights of these factors were not altered by taste-receptor anesthesia. This indicates that receptor desensitivity does not affect how information is processed centrally.

Original languageEnglish (US)
Pages (from-to)563-569
Number of pages7
JournalBehavioral Biology
Issue number4
StatePublished - Dec 1976

ASJC Scopus subject areas

  • General Environmental Science
  • General Earth and Planetary Sciences


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