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Proceedings Paper

Pressure generation during neural stimulation with infrared radiation
Author(s): N. Xia; X. Tan; Y. Xu; C.-P. Richter
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Paper Abstract

This study quantifies laser evoked pressure waves in small confined volumes such as a small dish or the cochlea. The pressure was measured with custom fabricated pressure probes in front of the optical fiber. For the pressure measurements during laser stimulation the probes were inserted into scala tympani or vestibuli. At 164 μJ/pulse, the intracochlear pressure was between 96 and 106 dB (re 20 μPa). The pressure was also measured in the ear canal with a sensitive microphone. It was on average 63 dB (re 20 μPa). At radiant energies large enough to evoke an auditory compound action potential, the outer ear canal equivalent pressure was 36-56 dB (re 20 μPa).

Paper Details

Date Published: 15 February 2017
PDF: 6 pages
Proc. SPIE 10062, Optical Interactions with Tissue and Cells XXVIII, 100620B (15 February 2017); doi: 10.1117/12.2253290
Show Author Affiliations
N. Xia, Qingdao Univ. (China)
X. Tan, Northwestern Univ. (United States)
Y. Xu, Northwestern Univ. (United States)
C.-P. Richter, Northwestern Univ. (United States)


Published in SPIE Proceedings Vol. 10062:
Optical Interactions with Tissue and Cells XXVIII
E. Duco Jansen; Hope Thomas Beier, Editor(s)

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