Optical stimulation of the cavernous nerves in the rat prostate

Nathaniel M. Fried, Gwen A. Lagoda, Nicholas J. Scott, Li Ming Su, Arthur L. Burnett

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations


Laser nerve stimulation has recently been studied as an alternative to electrical stimulation in neuroscience. Advantages include non-contact stimulation, improved spatial selectivity, and elimination of electrical stimulation artifacts. This study explores laser stimulation of the rat cavernous nerves, as a potential alternative to electrical nerve mapping during nerve-sparing radical prostatectomy. The cavernous nerves were surgically exposed in a total of 10 male rats. A Thulium fiber laser stimulated the nerves, with a wavelength of 1870 nm, pulse energy of 7.5 mJ, radiant exposure of 1 J/cm2, pulse duration of 2.5 ms, pulse rate of 10 Hz, and 1-mm laser spot diameter, for a stimulation time of 60 s. A significant increase in the intracavernosal pressure was detected upon laser stimulation, with pressure returning to baseline levels after stimulation. This study demonstrates the feasibility of non-contact laser stimulation of the cavernous nerves using near-infrared laser radiation.

Original languageEnglish (US)
Title of host publicationProgress in Biomedical Optics and Imaging - Proceedings of SPIE
StatePublished - 2008
EventPhotonic Therapeutics and Diagnostics IV - San Jose, CA, United States
Duration: Jan 19 2008Jan 19 2008

Publication series

NameProgress in Biomedical Optics and Imaging - Proceedings of SPIE
ISSN (Print)1605-7422


OtherPhotonic Therapeutics and Diagnostics IV
Country/TerritoryUnited States
CitySan Jose, CA


  • Cavernous
  • Fiber
  • Laser
  • Nerve
  • Neurovascular
  • Prostatectomy
  • Stimulation
  • Thulium

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Biomaterials
  • Radiology Nuclear Medicine and imaging


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