DocumentCode :
3196694
Title :
An electroacoustic recording device for wireless sensing of neural signals
Author :
Hua Meng ; Sahin, Mesut
Author_Institution :
Dept. of Biomed. Eng., New Jersey Inst. of Technol., Newark, NJ, USA
fYear :
2013
fDate :
3-7 July 2013
Firstpage :
3086
Lastpage :
3088
Abstract :
Elimination of wires connecting neural recording electrodes to external electronics is highly desired, particularly in survival animal studies, due to neural damage and the device failures caused by these wires. In this study, an electroacoustic device for sensing and wireless transmission of neural signals to an external unit is proposed and results from a prototype are presented. In this method, the neural signals modulate the acoustic pulse amplitudes generated by a small piezoelectric element that is implanted at the recording site. The acoustics waves are detected wirelessly outside the nervous system by another piezoelectric transducer and the neural signals are extracted by amplitude demodulation. To test the prototype, a sinusoidal signal with 100 Vpp amplitude was applied in phosphate buffered saline to simulated neural signals and the external transducer was placed 10mm away from the recording element. The results show that a sinusoidal signal of the given amplitude could be wirelessly sensed and reconstructed with a signal-to-noise ratio of 14dB.
Keywords :
acoustoelectric transducers; biomedical electrodes; medical signal processing; neurophysiology; piezoelectric transducers; signal denoising; signal reconstruction; ultrasonic transducers; ultrasonic waves; acoustic pulse amplitudes; acoustic waves; amplitude demodulation; device failures; electroacoustic recording device; external electronics; external transducer; nervous system; neural damage; neural recording electrodes; neural signal extraction; neural signal modulation; neural signal simulation; phosphate buffered saline; piezoelectric element; piezoelectric transducer; recording element; sensing transmission; signal reconstruction; signal-noise ratio; sinusoidal signal; wireless sensing; wireless transmission; Acoustic pulses; Electrodes; Modulation; Receivers; Wireless communication; Wires; neural recording; remote sensing; ultrasound;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Engineering in Medicine and Biology Society (EMBC), 2013 35th Annual International Conference of the IEEE
Conference_Location :
Osaka
ISSN :
1557-170X
Type :
conf
DOI :
10.1109/EMBC.2013.6610193
Filename :
6610193
Link To Document :
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