An electroacoustic recording device for wireless sensing of neural signals.
An electroacoustic recording device for wireless sensing of neural signals.
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一种用于无线传感神经信号的电声记录装置。
DOI：
10.1109/embc.2013.6610193
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
Sahin,Mesut
中科院分区：
文献类型：
--
作者：
HuaMeng;Sahin,Mesut
特别是在存活动物研究中，高度期望消除将神经记录电极连接到外部电子器件的导线，这是由于这些导线引起的神经损伤和设备故障。在这项研究中，提出了一种电声设备的传感和无线传输的神经信号到外部单元，并从原型的结果。在这种方法中，神经信号调制由植入记录部位的小压电元件产生的声脉冲幅度。在神经系统外通过另一个压电换能器无线检测声波，并通过幅度解调提取神经信号。为了测试原型，在磷酸盐缓冲盐水中施加具有100 Vpp振幅的正弦信号以模拟神经信号，并且将外部换能器放置在距离记录元件10 mm处。实验结果表明，该方法可以实现对给定幅值的正弦信号的无线感知和重建，信噪比为14dB。
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.