Electrode walking study

The electrode and synchronized walking study: Participants performed 3 tasks outside:
eyes open/eyes close, standing, walking alone & walking with experimenter oddball task, and 3 walking with experimenter tasks
Only part of the second task (standing and walking oddball) was used for the first paper.
Each of 18 participants performed the task using both active (session 1) and passive (session 2) electrodes, in counterbalanced order
Task 1: Eyes open / Eyes closed; 1. Participant stands facing a wall with eyes open (or closed) for 1 min.
Then 1 min of eyes closed (or open). This is counterbalanced and repeated. 2X each type. Task 2: Oddball task: Standing / Walking alone /
Walking together. Participants performed an oddball task in which they listened to the tones through headphones and silently counted the deviant tones.
The tones were 800 and 1000 Hz, with the standard/target status counterbalanced across participants. During the walking conditions,
participants walked clockwise around an outdoor (roofed) basketball arena, following pylons. Each block was about 5-6 minutes.
Blocks were counterbalanced and repeated 2X each. Task 3: Walking together: Natural / Control / Synchronize 3. Participants walked with
the experimenter for 6 minutes in 3 conditions. The experimenter listened to a metronome while walking, and synchronized their steps with it
(also true during walking together oddball task). During Natural walking, participant is just asked to walk with the experimenter, with no other
instruction. In Control, participant is `blinded` using `side-blinders` which block their view of the experimenter. In Synchronize, participants
try to synchronize their steps with the experimenter. All walking & oddball conditions started with a countdown (this has a specific trigger for oddball conds,
not for task 3 conds. It plays during the first ~ 12 seconds of the 6 min trial

- Joanna Scanlon (Feb 2022)

本数据集为电极与同步步行实验数据集：18名被试在户外完成三项实验任务，每名被试以平衡顺序先后完成两轮实验——首轮使用主动电极（active electrodes），次轮使用被动电极（passive electrodes）。本研究仅将第二项任务（站立与步行异常刺激（Oddball task）任务）的部分数据用于首篇学术论文。
具体任务详情如下：
任务1：睁眼/闭眼静息任务：被试面朝墙壁站立，先睁眼（或闭眼）保持1分钟，随后闭眼（或睁眼）保持1分钟，该条件的呈现顺序采用平衡设计，每种条件重复2次。
任务2：异常刺激（Oddball task）任务：包含站立、单独步行、结伴步行三种子任务。被试通过耳机聆听800Hz与1000Hz的音调，默数异常音调，标准刺激与目标刺激的分配在被试间采用平衡设计。步行条件下，被试沿户外带顶棚篮球场的标志锥（pylons）划定的路线顺时针步行，每个实验区块（block）时长约5-6分钟，区块顺序采用平衡设计，每种条件重复2次。
任务3：结伴步行任务：包含自然步行、对照、同步三种子任务，总时长为6分钟。实验者步行时跟随节拍器调整步频，配合实验者的异常刺激任务中同样遵循该规则。自然步行条件下，仅要求被试与实验者一同步行，无额外指令；对照条件下，被试佩戴侧方遮眼罩以遮挡对实验者的视线；同步条件下，要求被试尝试与实验者的步频保持一致。所有步行与异常刺激任务均以倒计时开场：异常刺激任务带有专属触发信号，任务3无该信号，倒计时会在6分钟试次（trial）的前约12秒内播放。
本数据集由乔安娜·斯坎伦（Joanna Scanlon）于2022年2月整理发布。