Wavelength-specific optoacoustic-induced vibrations of the guinea pig tympanic membrane.

ABSTRACT: Optoacoustic-induced vibrations of the hearing organ can potentially be used for a hearing device. To increase the efficiency of such a hearing device, the conversion of the light energy into vibration energy within each type of irradiated tissue has to be optimized. To analyze the wavelength-dependency of optoacoustic-induced vibrations within the tympanic membrane (TM), and to define the most efficient and best-suited optical stimulation parameters for a novel auditory prosthesis. Single nanosecond laser pulses, continuously tunable in a range of visible to near-infrared, were used to excite the guinea pig TM. The induced vibrations of the hearing organ were recorded at the malleus using a laser Doppler vibrometer. Our results indicate a strong wavelength-dependency of the vibration's am

SUBMITTER: Heimann L 

PROVIDER: S-EPMC7934890 | biostudies-literature | 2021 Mar

REPOSITORIES: biostudies-literature