Synaptic connections of buccal mechanosensory neurons in the opisthobranch mollusc, Navanax inermis

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Mechanical stimulation of various areas of the pharyngeal wall and lips can produce EPSPs and IPSPs, as well as abruptly rising impulses, in primary sensory cells. IPSP fields are generally larger than EPSP fields and these fields are distributed without obvious order around fields from which afferent spikes are evoked. Apparentlly monosynaptic excitatory and inhibitory contacts are formed between primary sensory neurons. These synapses are blocked by high Mg2+ indicating chemical transmission. IPSPs are inverted by Cl- injection. Excitatory inputs can be electrically far from the soma. Sensory cells form apparently monosynaptic excitatory or inhibitory contacts on motoneurons mediating pharyngeal expansion. Brief sensory excitation can initiate sustained firing within this neuronal population and sustained synaptic activity in moto-neurons. Interactions of sensory neurons may be important in information processing and in generating motor patterns. These neurons serve both primary sensory and interneuronal functions.

Original languageEnglish (US)
Pages (from-to)271-286
Number of pages16
JournalBrain Research
Volume182
Issue number2
DOIs
StatePublished - Jan 27 1980

Fingerprint

Inhibitory Postsynaptic Potentials
Cheek
Mollusca
Excitatory Postsynaptic Potentials
Sensory Receptor Cells
Neurons
Carisoprodol
Motor Neurons
Lip
Automatic Data Processing
Synapses
Injections
Population

Keywords

  • buccal ganglion
  • feeding, neural control of
  • gastropod mollusc
  • intersensory interaction
  • Navanax
  • opisthobranch mollusc
  • sensory neurons

ASJC Scopus subject areas

  • Developmental Biology
  • Molecular Biology
  • Clinical Neurology
  • Neuroscience(all)

Cite this

Synaptic connections of buccal mechanosensory neurons in the opisthobranch mollusc, Navanax inermis. / Spray, David C.; Spira, M. E.; Bennett, Michael V. L.

In: Brain Research, Vol. 182, No. 2, 27.01.1980, p. 271-286.

Research output: Contribution to journalArticle

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