Pretel Matías Rodolfo, Vidal Vanessa, Kienigiel Dante, Forcato Cecilia, Ramele Rodrigo
Laboratorio de Sueño y Memoria, Life Sciences Department, Instituto Tecnológico de Buenos Aires (ITBA), Buenos Aires, Argentina.
Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET), Buenos Aires, Argentina.
HardwareX. 2024 Jul 6;19:e00553. doi: 10.1016/j.ohx.2024.e00553. eCollection 2024 Sep.
To continue sleep research activities during the lockdown resulting from the COVID-19 pandemic, experiments that were previously conducted in laboratories were shifted to the homes of volunteers. Furthermore, for extensive data collection, it is necessary to use a large number of portable devices. Hence, to achieve these objectives, we developed a low-cost and open-source portable monitor (PM) device capable of acquiring electroencephalographic (EEG) signals using the popular ESP32 microcontroller. The device operates based on instrumentation amplifiers. It also has a connectivity microcontroller with Wi-Fi and Bluetooth that can be used to stream EEG signals. This portable single-channel 3-electrode EEG device allowed us to record short naps and score different sleep stages, such as wakefulness, non rapid eye movement sleep (NREM), stage 1 (S1), stage 2 (S2), stage 3 (S3) and stage 4 (S4). We validated the device by comparing the obtained signals to those generated by a research-grade counterpart. The results showed a high level of accurate similarity between both devices, demonstrating the feasibility of using this approach for extensive and low-cost data collection of EEG sleep recordings.
为了在因新冠疫情而实施的封锁期间继续开展睡眠研究活动，之前在实验室进行的实验转移到了志愿者家中。此外，为了进行广泛的数据收集，有必要使用大量的便携式设备。因此，为了实现这些目标，我们开发了一种低成本的开源便携式监测器（PM）设备，它能够使用流行的ESP32微控制器采集脑电图（EEG）信号。该设备基于仪表放大器运行。它还具有一个带有Wi-Fi和蓝牙的连接微控制器，可用于传输EEG信号。这种便携式单通道三电极EEG设备使我们能够记录短时间午睡并对不同睡眠阶段进行评分，如清醒、非快速眼动睡眠（NREM）、第1阶段（S1）、第2阶段（S2）、第3阶段（S3）和第4阶段（S4）。我们通过将获得的信号与研究级同类设备产生的信号进行比较来验证该设备。结果表明，两种设备之间具有高度准确的相似性，证明了使用这种方法进行EEG睡眠记录的广泛且低成本数据收集的可行性。
