sEMG of Swallowing, Coughing and Speech

Dataset for in-progress manuscript by the associated authors. <br> <strong>Data Summary:</strong> <br> Dataset consists of 3-channel surface electromyography (sEMG) recorded from under the chin (submental muscles) and chest (intercostal and diaphragm muscles) from 11 study participants (8 control, 3 throat cancer). <br> Each participant attended 4 sEMG recording sessions, each session consisting of the following: 15 swallows (5 dry, 5 water, 5 banana). 3 cough recordings, each recording comprising 5 coughs. 3 speech recordings, each comprising 10 spoken sentences from the Harvard sentences (IEEE, "IEEE Recommended Practice for Speech Quality Measurements," IEEE Trans. Audio Electroacoust., vol. 17, no. 3, pp. 225-246, 1969). 6 movement recordings comprising the actions of standing, walking, reaching, twisting and sitting. 1 baseline recording, participant remained still for 60 seconds while baseline signals were recorded. Sound was recorded concurrently during swallow and speech recordings using a contact microphone placed over the cricoid cartilage. Pneumotachometry (airflow) was recorded during coughing. <br> <strong>Data Folders and File Notes:</strong> <br> Dataset contains both raw and processed data (signals have been normalized to baseline recording and excessive artefacts removed). <br> 1 folder exists per session: "P1_S1" corresponds to Participant 1 Session 1 data. <br> 1 .csv file exists per recording. From left to right .csv columns correspond to: Submental sEMG, Intercostal sEMG, Diaphragm sEMG, Pneumotachometry, Contact Microphone, Class Label. mV,mV,mV,cmH20,V,N/A (Units for raw data) <br> Class labels are as follows: 0 - Null (anything outside the other classes) 1 - Swallow phase 1 (preparation activity for swallowing such as chewing, sipping etc.) 2 - Swallow phase 2 (swallow reflex, larynx elevation following submental muscle contraction) 3 - Cough 4 - Speech <br> Movement recordings start with standing and end with sitting. The order of walking, twisting and reaching is randomised and summarised by the recording title e.g. "08_reach_twist_walk.csv" indicates an order of reach-twist-walk. <br> Files ending in "SW" indicate an out-of-protocol swallow took place e.g. participant swallowed during a cough recording. <br> Swallow files ending in "N2" or "N3" contain 2 or 3 swallows respectively. <br> &gt;1 baseline recording may exist in a session. If electrodes became detached during a session the baseline recording was repeated and subsequent recordings in the session normalised according to the latter baseline. <br> <strong>Hardware Setup:</strong> <br> Two submental electrodes (EL513, 10 mm diameter, BIOPAC Systems UK) were placed on the midline, posterior to the mental protuberance, with 20 mm interelectrode distance. <br> Three electrodes (EL503, 11 mm diameter, BIOPAC) were placed on the right 9th/10th intercostal space close to the anterior axillary line, with 35 mm interelectrode distance. The posterior two electrodes formed the intercostal recording dipole. The anterior electrode and a single electrode placed on the left 9th/10th intercostal space formed the diaphragm recording dipole. <br> Two reference electrodes (EL503) were placed on the midline over the sternum. <br> Two wireless EMG recorders (BIOPAC BN-EMG2 BioNomadix, 2,000 Hz sampling rate, 2,000× gain, 5 to 500 Hz bandpass filter) were placed at the waist and on the head to minimise relative cable length and motion artefacts. <br>本数据集为相关作者团队正在撰写的手稿配套数据集。<br><strong>数据概况：</strong><br>本数据集包含来自11名受试者（8名健康对照、3名喉癌患者）的三通道表面肌电图（surface electromyography, sEMG）信号，采集自受试者下巴下方的颏下肌肉以及胸部的肋间肌与膈肌。<br>每名受试者参与4次肌电记录时段，每次时段包含以下内容：<br>15次吞咽任务（5次干吞咽、5次饮水吞咽、5次香蕉吞咽）；3次咳嗽录制，每次录制包含5次咳嗽动作；3段语音录制，每段包含10句哈佛标准语句（引用自IEEE："IEEE Recommended Practice for Speech Quality Measurements"，IEEE Trans. Audio Electroacoust., 第17卷第3期，第225-246页，1969年）；6次动作录制，包含站立、行走、伸手、转身与坐下动作；1次基线录制：受试者保持静止60秒以采集基线信号。<br>吞咽与语音录制期间，通过置于环状软骨上方的接触式麦克风同步采集音频信号；咳嗽录制期间，通过呼吸速度描记法（Pneumotachometry）采集气流信号。<br><strong>数据文件夹与文件说明：</strong><br>本数据集包含原始数据与预处理后数据（信号已基于基线录制结果进行归一化处理，并已移除过多伪迹）。<br>每个记录时段对应一个专属文件夹：例如"P1_S1"代表受试者1、时段1的数据。<br>每次录制对应一个.csv格式文件。CSV列从左至右依次为：颏下表面肌电、肋间表面肌电、膈肌表面肌电、呼吸速度描记法（Pneumotachometry）信号、接触式麦克风音频、类别标签。原始数据单位依次为：mV、mV、mV、cmH₂O、V、无单位（N/A）。<br>类别标签说明如下：<br>0 - 空类别（其他类别之外的所有场景）<br>1 - 吞咽阶段1（吞咽准备活动，如咀嚼、啜饮等）<br>2 - 吞咽阶段2（吞咽反射，颏下肌肉收缩后喉部上抬）<br>3 - 咳嗽<br>4 - 语音<br>动作录制以站立为起始，以坐下为结束。行走、转身与伸手的动作顺序为随机排列，可通过录制文件名推断，例如"08_reach_twist_walk.csv"代表动作顺序为伸手-转身-行走。<br>文件名以"SW"结尾代表存在协议外吞咽动作，例如受试者在咳嗽录制期间发生了吞咽。<br>以"N2"或"N3"结尾的吞咽文件，分别包含2次或3次吞咽动作。<br>单个时段可能存在多条基线录制文件。若某时段内电极脱落，则需重新采集基线信号，该时段后续录制将基于新采集的基线进行归一化处理。<br><strong>硬件搭建方案：</strong><br>2个颏下电极（EL513，直径10mm，英国BIOPAC Systems）置于颏隆突后方的正中线位置，电极间距为20mm。<br>3个电极（EL503，直径11mm，BIOPAC）置于右侧第9/10肋间隙、近腋前线位置，电极间距35mm。其中靠后的2个电极构成肋间肌记录的双极导联；靠前的1个电极与置于左侧第9/10肋间隙的1个电极共同构成膈肌记录的双极导联。<br>2个参考电极（EL503）置于胸骨正中线位置。<br>2台无线肌电记录仪（BIOPAC BN-EMG2 BioNomadix，采样率2000Hz，增益2000倍，带通滤波范围5~500Hz）分别置于腰部与头部，以缩短相对线缆长度并减少运动伪迹。