Dataset: Brain negativity as an indicator of predictive error processing: The contribution of visual action effect monitoring

There are two files for each subject: 1. sub##_error.dat -> Contains EEG Segments, that were recorded while the subject executed a clear target miss (minimal distance between the center of the ball and target > 12 cm) in the task (segment and electrode information can be found below). 2. sub##_hit.dat -> Contains EEG Segments, that were recorded while the subject executed a clear target hit (minimal distance between the center of the ball and the target < 7 cm) in the task (segment and electrode information can be found below). The data in the *.dat-files are stored in a two dimensional matrix: n*1400 datapoints x 15 electrodes n represents the number of segments. 1400 datapoints per segment translate to a segment length of 2800 ms (from 600 ms before to 2200 ms after ball release). The ball´s release is located at the 301st datapoint and the feedback was presented at datapoint 726 (850 ms after ball release) in every segment. datapoints: The first dimension (rows) includes the measured neural activations in microvolts. The data is stored vectorized, i.e. hit/error #1 -> row 1 to 1400, hit/error #2 -> row 1401 to 2800, ..., hit/error #n -> (n-1) * 1400 + 1 to n * 1400 electrodes: The second dimension (columns) consists of the 15 different electrodes that were used during data recording in this exact order: [F3 Fz F4 C4 Cz C3 P3 Pz P4 VEOGu VEOGo HEOGre HEOGli FCz Mastre]

每个受试者对应两个数据文件：
1. sub##_error.dat：包含受试者在任务中出现明确目标未命中情况（球心与目标的最小距离＞12厘米）时记录的脑电片段（EEG Segments），片段与电极的相关信息详见下文。
2. sub##_hit.dat：包含受试者在任务中出现明确目标命中情况（球心与目标的最小距离＜7厘米）时记录的脑电片段（EEG Segments），相关信息详见下文。

*.dat格式文件中的数据以二维矩阵形式存储：行数为n×1400个数据点，列数为15个电极，其中n为脑电片段的总数量。每个片段包含1400个数据点，对应总时长2800毫秒，涵盖球释放前600毫秒至球释放后2200毫秒的时段。所有片段中，球释放时刻对应第301个数据点，而反馈提示则在第726个数据点处呈现（即球释放后850毫秒）。

数据点说明：第一维度（行）存储以微伏（μV）为单位的实测神经活动数据，数据采用向量化存储方式，即第1次未命中/命中的脑电片段对应第1至1400行，第2次对应第1401至2800行，……，第n次对应(n-1)×1400+1至n×1400行。

电极说明：第二维度（列）包含本次数据采集使用的15个电极，顺序如下：[F3、Fz、F4、C4、Cz、C3、P3、Pz、P4、VEOGu、VEOGo、HEOGre、HEOGli、FCz、Mastre]