Green laser light (532nm) activates a chloride current in the C1 neuron of Helix aspersa

P J Reece, Kishan Dholakia, R C Thomas, Glen Alfred Cottrell

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9 Citations (Scopus)

Abstract

Five hundred and thirty-two nanometers laser light evokes neuron-specific electrical responses in identified neurons of Helix ganglia. Such responses are intensity-dependent over the range 25-1500 mW, readily reversible and repeatable. Detailed experiments on the C1 neuron, which is inhibited by 532nm light, showed that inhibition results from a selective increase in transmembrane Cl- ion conductance. Experiments with calcium-sensitive microelectrodes suggest that the response does not result from an increase in I Ca2+](i). The change in Cl- ion conductance probably occurs in the extensive plasmalemma infoldings of the proximal axon. (C) 2008 Elsevier Ireland Ltd. All rights reserved.

Original languageEnglish
Pages (from-to)265-269
Number of pages5
JournalNeuroscience Letters
Volume433
Issue number3
DOIs
Publication statusPublished - 15 Mar 2008

Keywords

  • chloride currents
  • laser light
  • Helix neurones
  • STIMULATION
  • CHANNELS
  • APLYSIA
  • CALCIUM
  • CELLS

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