Proprioceptive indentation of the campaniform sensilla of cockroach legs

S. M. Spinola, K. M. Chapman

Research output: Contribution to journalArticle

52 Scopus citations


1. Individual proprioceptive campaniform sensilla of tibial Group 6 in the cockroach Blaberus discoidalis were stimulated by combinations of proprioceptive and punctate stimuli. 2. Punctate stimulation during a proprioceptive discharge increased the response rather than decreasing it, indicating that proprioceptive stimuli indent, rather than bulge, the cap of the sensillum. 3. The magnitude of the indentation associated with a strong proprioceptive discharge was estimated from compliance and sensitivity measurements to be in the range 10 to 50 nanometers. 4. The excitatory strain of the tibial cuticle appears to be compression perpendicular to the long axis of the cap of the sensillum. We suggest that the elaborate structure of the cap cuticle serves to amplify the tibial cuticular strain to squeeze the terminal of the dendritic sensory process.

Original languageEnglish (US)
Pages (from-to)257-272
Number of pages16
JournalJournal of Comparative Physiology ■ A
Issue number3
StatePublished - Sep 1 1975
Externally publishedYes

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Physiology
  • Animal Science and Zoology
  • Behavioral Neuroscience

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