Local mechanical stimulation of the hearing organ by laser irradiation

Anders Fridberger, Tianying Ren

Research output: Contribution to journalArticlepeer-review

21 Scopus citations


Light produces force when interacting with matter. Such radiation pressure may be used to accelerate small objects along the beam path of a laser. Here, we demonstrate that a moderately powerful laser can deliver enough force to locally stimulate the hearing organ, in the absence of conventional sound. Damped mechanical oscillations are observed following brief laser pulses, implying that the organ of Corti is locally resonant. This new method will be helpful for probing the mechanical properties of the hearing organ, which have crucial importance for the ear's ability to detect sound.

Original languageEnglish (US)
Pages (from-to)33-37
Number of pages5
Issue number1
StatePublished - Jan 2006


  • Basilar membrane
  • Cochlear microphonic potential
  • Interferometry
  • Pressure
  • Radiation

ASJC Scopus subject areas

  • Neuroscience(all)


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