Correlation of receptive field position of mechanosensory neurons and the strength of their connections to AP neurons in the CNS of the leech (Whitmania pigra)

Ren Ji Zhang, Dong Jing Zou, Jie Zheng

Research output: Contribution to journalArticle

7 Scopus citations


An identified neuron of unknown function in the CNS of the leech, the anterior pagoda (AP) cell, receives multiple synaptic inputs from mechanosensory neurons that innervate the skin. Impulses in touch (T), pressure (P) and nociceptive (N) sensory cells on both sides of the ganglion produced electrical coupling potentials on both AP cells. Sensory cells with receptive fields contralateral to the cell body of the AP neuron always gave rise to larger synaptic potentials. In addition sensory cells supplying dorsal skin gave rise to larger synaptic potentials than those with lateral or ventral fields. It is suggested that integration by the AP cell can provide information about the position of mechanical stimuli impinging on the body wall of the animal.

Original languageEnglish (US)
Pages (from-to)249-254
Number of pages6
JournalInvertebrate Neuroscience
Issue number3
StatePublished - Dec 1995
Externally publishedYes



  • electrical synapses
  • integration
  • leech
  • positional discrimination
  • synaptic connections

ASJC Scopus subject areas

  • Neuroscience(all)

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