Single neurone responses to tactile stimulation of the heart in the snail, Helix pomatia L.

Katalin S.-Rózsa, J. Salánki

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

The electrical activity of the heart nerve and of single neurons in the suboesophageal ganglia were recorded during tactile stimulation of the heart. 15 neurons were identified which responded to heart stimulation by inhibiting or accelerating activity. Cells influenced by heart afferents are scattered in the visceral and in the right and left parietal ganglia. In most of the cases both decrease and increase of cell activity are caused by synaptic potentials, in some cases, however, the neuron is assumed to have a sensory character. The activity of three neurons influenced by heart stimulation was conducted into the heart nerve. These cells are central neurons of a heart-CNS-heart reflex. Some of the neurons located in the right parietal and visceral ganglia have no connection with the mechanoreceptors of the heart. Since their spikes propagate into the heart nerve, they probably take part in the extracardial regulation of heart activity. One of the neurons located in the visceral ganglion (cell V12) sends its axon into the heart nerve. The response of this neuron to heart stimulation was an increase in activity and an inhibition of the heart rate. This is an inhibitory neuron of the extracardial heart regulatory system.

Original languageEnglish
Pages (from-to)267-279
Number of pages13
JournalJournal of Comparative Physiology
Volume84
Issue number3
DOIs
Publication statusPublished - Sep 1973

Fingerprint

Helix (Snails)
Helix pomatia
Touch
snail
snails
neurons
heart
Neurons
Ganglia
nerve tissue
regulation
rate
cells
subesophageal ganglia
Synaptic Potentials
mechanoreceptors
Mechanoreceptors

ASJC Scopus subject areas

  • Behavioral Neuroscience
  • Neuroscience(all)
  • Physiology (medical)
  • Physiology
  • Animal Science and Zoology
  • Medicine(all)

Cite this

Single neurone responses to tactile stimulation of the heart in the snail, Helix pomatia L. / S.-Rózsa, Katalin; Salánki, J.

In: Journal of Comparative Physiology, Vol. 84, No. 3, 09.1973, p. 267-279.

Research output: Contribution to journalArticle

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