SpinalExpect_NonInvasive

Contact person: Max-Philipp Stenner, email: [e-mail] or [e-mail], ORCID: 0000-0002-3694-1887 Brief overview of the tasks in the experiment: The goal was to reveal whether temporal expectation influences initial sensory processing in the human spinal cord. In each trial, subjects (n=30, healthy, young) received at least one electric median nerve stimulation on the left wrist. Their task was to silently count in how many (rare) trials in each block (~5 min) there were two median nerve stimuli in rapid succession (80 ms ISI), and to report that number at the end of each block. In each trial, the median nerve stimulation was preceded by an auditory cue. In alternating blocks, the time interval between the auditory cue and the (first) median nerve stimulation was either fixed at 1100 ms, or varied randomly (uniform distribution) between 100 and 2100 ms. Each subject (except for sub-24) completed two days of testing. Whether a session began with a constant-interval block or variable-interval block was counterbalanced across subjects. Montage: Adapted from/extended beyond Chander, B. S., Deliano, M., Azañón, E., Büntjen, L., & Stenner, M. P. (2022). Non-invasive recording of high-frequency signals from the human spinal cord. NeuroImage, 253, 119050, as follows. Electrodes were placed in three rings around the neck. "Sr" in the channel names stands for "spinal ring". There was a caudal, middle, and cranial ring of electrodes. The middle ring was connecting a point above the spinous process of the sixth cervical vertebra (SrC6), and a point above the thyroid cartilage ("SrF"). Between these two electrodes, the remaining six electrodes for the middle ring were evenly spaced around the neck. "L" in channel names means left, "R" means right, "B" means "back", "F" means front, and "M" means middle. For the caudal and cranial rings, electrodes were placed approximately 2 cm below ("_b") and 2 cm above ("_a") the corresponding electrodes of the middle ring, respectively. Events: There are three events of interest. "S1" is a keypress of the experimenter, to advance the task upon breaks. "S1" can therefore be used to identify the start of each new block. "S70" corresponds to the auditory cue. "S130" corresponds to median nerve stimulation. "S99" is a "placeholder" that corresponds to no stimulus at all. The placeholder was used to enable "double stimuli", i.e., a rapid succession of two median nerve stimulations with an ISI of 80 ms. Most trials follow a sequence of "S70" - "S130" - "S99". Deviant trials have "S70" - "S130" - "S130".联系人：马克斯-菲利普·施特纳（Max-Philipp Stenner），电子邮箱：[e-mail] 或 [e-mail]，ORCID：0000-0002-3694-1887 实验任务简要概述： 本实验旨在探究时序预期是否会影响人类脊髓的初始感觉加工过程。每次试次中，30名健康年轻被试均会接受至少一次左侧腕部正中神经电刺激。被试的任务为：在每个时长约5分钟的组块内，默数出现两次正中神经刺激以80毫秒刺激间隔（ISI）快速连续呈现的罕见试次数量，并在每组块结束时上报该数值。每一试次中，正中神经刺激前均会呈现听觉提示信号。在交替实施的组块中，听觉提示信号与（首次）正中神经刺激的时间间隔要么固定为1100毫秒，要么在100至2100毫秒之间随机均匀分布。除24号被试外，所有被试均完成了为期两天的测试。被试间采用平衡设计，即各被试的首个测试组块类型（固定间隔组块或可变间隔组块）得以均衡配置。 电极导联配置： 本配置改编并拓展自Chander等人2022年发表于《NeuroImage》的研究（Chander, B. S., Deliano, M., Azañón, E., Büntjen, L., & Stenner, M. P. (2022). Non-invasive recording of high-frequency signals from the human spinal cord. NeuroImage, 253, 119050），具体设置如下。电极沿颈部布置为三圈：导联名称中的"Sr"代表"脊髓环（spinal ring）"，三圈电极分别对应尾侧、中间与头侧位置。中间环连接两个点位：第六颈椎棘突上方（SrC6）与甲状软骨上方（SrF）。在这两个电极之间，其余6个中间环电极沿颈部均匀分布。导联名称中，"L"代表左侧，"R"代表右侧，"B"代表后方，"F"代表前方，"M"代表中间。尾侧环与头侧环的电极分别对应中间环的对应电极，位置分别在其下方约2厘米处（后缀"_b"）与上方约2厘米处（后缀"_a"）。 事件定义： 本实验共包含三类关注事件： 1. "S1"：实验者在休息阶段用于推进任务的按键操作，可用于识别每个新组块的起始节点。 2. "S70"：对应听觉提示信号。 3. "S130"：对应正中神经刺激。 "S99"为"占位符"，代表无任何刺激。该占位符用于实现"双刺激"范式，即两次正中神经刺激以80毫秒刺激间隔快速连续呈现。多数试次遵循"S70 → S130 → S99"的序列，而异常试次则采用"S70 → S130 → S130"的序列。

搜集汇总

背景与挑战

背景概述

该数据集是一个EEG数据集，专注于非侵入性记录人类脊髓的高频信号，以研究时间预期对脊髓初始感觉处理的影响。实验涉及30名健康年轻受试者，他们接受左腕正中神经电刺激，并执行计数任务，数据采集使用颈部电极环布置，包含听觉线索和刺激事件。数据集规模较大，有417个文件（92.81GB），遵循BIDS标准，许可证为CC0，发布于2024年12月。