Nanowires precisely grown on the ends of microwire electrodes permit the recording of intracellular action potentials within deeper neural structures

John E. Ferguson, Christopher Boldt, Joshua G. Puhl, Tyler W. Stigen, Jadin C. Jackson, Kevin M. Crisp, Karen A. Mesce, Theoden I. Netoff, A. David Redish

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

Aims: Nanoelectrodes are an emerging biomedical technology that can be used to record intracellular membrane potentials from neurons while causing minimal damage during membrane penetration. Current nanoelectrode designs, however, have low aspect ratios or large substrates and thus are not suitable for recording from neurons deep within complex natural structures, such as brain slices. Materials & methods: We describe a novel nanoelectrode design that uses nanowires grown on the ends of microwire recording electrodes similar to those frequently used in vivo. Results & discussion: We demonstrate that these nanowires can record intracellular action potentials in a rat brain slice preparation and in isolated leech ganglia. Conclusion: Nanoelectrodes have the potential to revolutionize intracellular recording methods in complex neural tissues, to enable new multielectrode array technologies and, ultimately, to be used to record intracellular signals in vivo. Original submitted 7 June 2011; Revised submitted 15 September 2011; Published online 4 April 201.

Original languageEnglish (US)
Pages (from-to)847-853
Number of pages7
JournalNanomedicine
Volume7
Issue number6
DOIs
StatePublished - Jun 2012

Keywords

  • electrophysiology
  • intracellular recording
  • nanoelectrode
  • nanotechnology
  • nanowire
  • neuron

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