EEG, ECG and pupil data from young and older adults: rest and auditory cued reaction time tasks

Age-related differences in EEG, ECG and pupilography during auditory cued reaction time tasks

In this study, we acquired the electroencephalogram (EEG), pupilogram and electrocardiogram (ECG) while a group of young (N = 36) and a group of older (N = 39) adults were engaged in auditory cued reaction time tasks (active tasks) or passively listening to the auditory stimulus used as temporal cue, presented with the same frequency as in the active tasks (passive task - 4 minutes acquired at the beginning of the session).

The active tasks were a cued simple reaction time task and a cued go/no-go task. In the active tasks, 16% of the trials were cue only trials (the cue was presented but no target followed).

The order of the active tasks was counterbalanced across participants and were acquired in two runs of 8 minutes per task. In each task, we acquired 120 trials. In the simple reaction time task, 100 trials were cue-target trials and 20 trials were cue-only. In the go/no-go task, 80 trials were cue-go trials, 20 were cue-no-go trials, and 20 trials were cue-only trials.

Participants were fixating a grey computer screen with a lighter grey fixation cross at the center. The auditory stimuli were single-frequency signals (pure tones) with duration 250 ms, with the following frequencies: cue 1500 Hz; go stimulus 1700 Hz; no-go stimulus 1300 Hz; and error feedback signal 1000 Hz.

The sounds were played at around 67 dB(A) from a hi-fi speakers system. All stimuli were suprathreshold.

EEG signal was recorded using a 64-channel Neuroscan system with scalp electrodes placed according to the International 10-20 electrode placement standard, with reference between the electrodes CPz and Cz and ground between FPz and Fz. Acquisition rate was 500 Hz. Vertical and horizontal electrooculograms were recorded to monitor eye movements and blinks. Bipolar electrocardiogram (ECG) electrodes were placed on the chest. During data acquisition, the participants head was stabilized with a chin and forehead rest. Consequently, the electrodes on the forehead, FP1, FPz, and FP2, displayed signal fluctuation artifacts due to the pressure on the forehead rest. These were excluded from the recordings.

Electrode positions were measured using a 3D-digitizer Fastrak (Polhemus, VT, USA) and imported into the EEGLAB files.

Pupil data was acquired with iView X Hi-Speed 1250 system from SMI with a sampling rate of 240 Hz. Pupil data was imported into the EEG dataset with the EYE-EEG EEGLAB plugin.

Synchronized EEG, ECG and pupil data are included in separate channels in the EEGLAB .set files.

听觉线索反应时任务中脑电图(EEG)、心电图(ECG)及眼瞳图(pupilogram)的年龄相关差异

本研究采集了青年组（N=36）与老年组（N=39）成人在完成听觉线索反应时任务（主动任务），或被动聆听与主动任务中同频率听觉时间线索（被动任务——实验开始前采集4分钟数据）时的脑电图(EEG)、眼瞳图(pupilogram)与心电图(ECG)数据。

主动任务包含线索型简单反应时任务与线索型Go/NoGo任务。主动任务中，16%的试次为仅线索试次（仅呈现线索而无后续目标刺激）。

主动任务的实施顺序在被试间进行平衡，每项任务分两段完成，每段时长8分钟。每项任务包含120个试次：其中简单反应时任务含100个线索-目标试次与20个仅线索试次；Go/NoGo任务则包含80个线索-Go试次、20个线索-NoGo试次与20个仅线索试次。

被试需注视中央带有浅灰色注视十字的灰色计算机屏幕。听觉刺激为时长250ms的单频纯音，各刺激频率如下：线索音1500Hz，Go刺激音1700Hz，NoGo刺激音1300Hz，错误反馈音1000Hz。

声音通过高保真扬声器系统以约67dB(A)的音量播放，所有刺激均为阈上刺激。

脑电图数据采用64通道Neuroscan系统采集，头皮电极按照国际10-20电极放置标准布设，参考电极置于CPz与Cz之间，接地电极置于FPz与Fz之间，采样率为500Hz。同时记录垂直与水平眼电图以监测眼动与眨眼情况。双极心电图电极放置于胸部。数据采集过程中，被试头部通过下颌托与额托进行固定，因此前额电极FP1、FPz与FP2因额托压迫出现信号波动伪影，该部分数据已从记录中剔除。

电极位置通过3D数字化仪Fastrak（Polhemus，美国佛蒙特州）进行测量，并导入至EEGLAB数据文件中。

眼瞳数据采用SMI公司的iView X Hi-Speed 1250系统采集，采样率为240Hz，通过EEGLAB的EYE-EEG插件导入至脑电图数据集。

同步化的脑电图、心电图与眼瞳数据以独立通道形式存储于EEGLAB .set格式文件中。

搜集汇总

背景与挑战

背景概述

该数据集包含75名年轻和年长成年人在静息和听觉线索反应时任务中的同步EEG、ECG和瞳孔数据，用于研究年龄相关的神经生理差异。数据采集包括主动任务（如简单反应时和go/no-go任务）和被动任务，以EEGLAB格式存储，已通过BIDS验证，支持神经科学研究的可重复性分析。