Non-invasive recording of EEG from the cervical spinal cord via surface electrodes placed around the neck

Data and scripts used for Chander et al. 2021. EEG data recorded via 10 electrodes placed around the neck of 17 healthy young human individuals, in addition to EEG data recorded from scalp electrodes (numbers of electrodes vary across individuals), an ECG channel, and EOG channels. The reference electrode was placed above the right acromion, the ground electrode above the left acromion. Sampling rate 5000 Hz, online lowpass filter 1000 Hz, online highpass filter .1 Hz (BrainAmp DC amplifier). During recordings, the left median nerve of participants was stimulated using a DS7 Digitimer at ~110% of motor threshold (constant current stimulation, 50-500 µsec pulse width (depending on the participant), square wave) at 3 Hz. 15% of stimuli were pseudo-randomly omitted. Participants counted the number of omissions in each of 3 minute blocks. The montage for neck electrodes is explained in Chander et al. 2021. There are three trigger values: 1 = experimenter pressed a key to start the experiment, or to initiate a new block. 130 = median nerve stimulation. 99 = omission. Further details in Chander et al. 2021.本数据集及配套脚本用于Chander等人2021年的相关研究。研究采集的脑电（EEG）数据包括：通过10个电极采集自17名健康年轻人类受试者颈部的脑电信号，此外还包含头皮电极采集的脑电数据（不同受试者的头皮电极数量存在差异）、心电（ECG）通道数据以及眼电（EOG）通道数据。参考电极置于右侧肩峰上方，接地电极置于左侧肩峰上方。信号采样率为5000 Hz，采用BrainAmp DC放大器进行在线滤波：在线低通滤波截止频率为1000 Hz，在线高通滤波截止频率为0.1 Hz。 数据采集期间，使用DS7 Digitimer以约110%运动阈值的恒定电流刺激受试者左侧正中神经，刺激脉冲宽度为50~500微秒（依受试者个体调整），为方波脉冲，刺激频率为3 Hz。其中15%的刺激会被伪随机省略，受试者需在每个持续3分钟的试次块中计数被省略的刺激次数。颈部电极的电极排布方案详见Chander等人2021年的研究。 本次数据集包含三类触发标记：1代表实验者按下按键启动实验或开启新的试次块；130代表正中神经刺激事件；99代表刺激被省略事件。更多实验细节可参见Chander等人2021年的研究。