School of Automation Science and Electrical Engineering, Beihang University, Beijing 100191, China.
Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing 100191, China.
Sensors (Basel). 2021 May 11;21(10):3336. doi: 10.3390/s21103336.
The acquisition and analysis of EEG signals of dolphins, a highly intelligent creature, has always been a focus of the research of bioelectric signals. Prevailing cable-connected devices cannot be adapted to data acquisition very well when dolphins are in motion. Therefore, this study designs a novel, light-weighted, and portable EEG acquisition device aimed at relatively unrestricted EEG acquisition. An embedded main control board and an acquisition board were designed, and all modules are encapsulated in a 162 × 94 × 60 mm waterproof device box, which can be tied to the dolphin's body by a silicon belt. The acquisition device uses customized suction cups with embedded electrodes and adopts a Bluetooth module for wireless communication with the ground station. The sampled signals are written to the memory card on board when the Bluetooth communication is blocked. A limited experiment was designed to verify the effectiveness of the device functionality onshore and underwater. However, more rigorous long-term tests on dolphins in various states with our device are expected in future to further prove its capability and study the movement-related artifacts.
海豚是一种高度智能的生物，对其脑电信号的获取和分析一直是生物电信号研究的重点。传统的有线连接设备在海豚运动时不能很好地适应数据采集。因此，本研究设计了一种新型的、轻便的、便携式脑电采集设备，旨在进行相对无限制的脑电采集。设计了一个嵌入式主控板和采集板，所有模块都封装在一个 162×94×60mm 的防水设备箱中，可以通过硅带绑在海豚的身体上。采集设备使用带有嵌入式电极的定制吸盘，并采用蓝牙模块与地面站进行无线通信。当蓝牙通信受阻时，采样信号被写入板载内存卡中。设计了一个有限的实验，在陆地上和水下验证设备功能的有效性。然而，我们希望在未来对各种状态下的海豚进行更严格的长期测试，以进一步证明其性能，并研究与运动相关的伪影。
