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      <title>Successful single-session neural self-regulation through neurofeedback varies between features</title>
      <description>Data and code from: Successful single-session neural self-regulation through neurofeedback varies between features

Dataset DOI: 10.5281/zenodo.18266174

Dataset Overview

This repository contains the pre-processed EEG data supporting the findings of the pre-print "Successful single-session neural self-regulation through neurofeedback varies between features" published open access at Human Brain Mapping with the doi: 10.1002/hbm.70611 and as a pre-print with the doi:  10.64898/2026.01.07.698228. The dataset is organized at the single-subject level, provided in MATLAB (.mat) format. Each subject file contains time-frequency resolved data separated by feature, allowing for modular analysis. The data has been pre-processed and downsampled to 100 Hz, resulting in a three-dimensional array structure of 40 × 62 × 19,100 per feature. In addition, we share supporting information, and the code used to reproduce the results in the manuscript.

Description of the data and file structure

Data and computer code for "Successful single-session neural self-regulation through neurofeedback varies between features"

Files and variables

File: feedback_sessions.zip

Description: The main data file (see below for the complete archived repository including data overviews and computer code).

Variables:

The feedback_sessions.zip file contains individual neurofeedback files for each participant and session following this formatS(N) + Feature + feedbackPower.mat each file contains the following variables:

feedbackPowerASRdB: A three dimensional matrix of the size 40 x 62 x 19,100 corresponding to frequencies 1-40, 62 channels, and, 19,100 samples.

nftChanlocs: MATLAB structure that contains the channel names and locations.

nftChannels: Vector with indices to the channels which feedback was based on.

nftFreqs: Vector with indices to the frequencies which feedback was based on.

File: demographics.csv

Description: Demographic information about the participants, with the variables: ID, age, gender, handedness, and education.

Various files: aggregated_data.zip

Description: For convenience, we also provide some of the aggregated data generated by the shared code files in the repository.

Software

MATLAB (version R2022b) was used for pre-processing of raw EEG data. Analyses were performed with R (version 4.2.1), JOPS package (version 0.1.2), dtwclust package (version 5.5.11), eegUtils package (version 0.4.6), and mgcv package (version 1.9-1).

Code

Pre-process the raw EEG files

finalPreprocessNFT.m

Inputs

Feature.mat Raw EEG files

Outputs

S + ID + Feature + avgFeedbackPowerdBASR.mat

S + ID + Feature + avgFeedbackPower.mat

Dependencies

fExtractFeedbackPowerWaveletCompletedB.m

extractFeedbackSamples.m #

blocks2samples.m # Blocks to sample indices

laplacian_perrinX.m # Spatial filter

Export averaged EEG power to a text file for further analysis

export_EEG_PowerforAnalysis.m

Inputs

S + ID + Feature + avgFeedbackPowerdBASR.mat

Outputs

newPipelineAvgPowerdB + Feature + N20ASR.txt

Fit B-spline models with V-curve smoothing of power time-series data and compute Bayesian CIs for each participants and feature, save results, especially coefficients, for further analysis

smoothV-CurvSplineClustering.R

Inputs

newPipelineAvgPowerdB + Feature + N20ASR.txt

Outputs

Feature + CoeffsSmoothV127.rds

Feature + FitSmoothV127.rds

Cluster the learners

clusteringLearners.R

Inputs

Feature + CoeffsSmoothV127.rds

Feature + FitSmoothV127.rds

Outputs

Feature + Clusters.csv

Export averaged EEG power (per feature) for all EEG channels to a text file for further analysis

exportAvgNFTbyChannel.m

Inputs

S + ID + Feature + feedbackPower.mat

Outputs

S + ID + Feature + NFTbyChannel.txt

Model coefficients by cluster with mgcv package (bam), save data for plots with topoplot and trendlines

smoothModelsForClustersCoeffsAndToposFINAL.R

Inputs

Feature + Clusters.csv

Feature + NFTbyChannel.txt

chanlocs.txt

Outputs

Feature + CoeffsbyClusters2.csv

Feature + ToposbyBlockandClusters2.csv

Dependencies

flipSMRAmplitudesLaterallyAndEvaluate.R

Create plots for each feature displaying topoplots and trendlines for the clusters

plotCoeffsandTopoplotsByClusteredData.m

Inputs

Feature + NFTsettings.mat

Feature + Clusters.csv

Feature + CoeffsbyClusters2.csv

Feature + ToposbyBlockandClusters2.csv

Outputs

Figure3 + Feature + .png

Figure3 + Feature + .svg

Create plots for each feature displaying change between first and last block for each frequency band in the controlled channels

figureChangeLastblockVsThreshold.R

Inputs

S + ID + Feature + NFTbyChannelFrequency.txt

Feature + Clusters.csv

Outputs

Feature + FreqBandChangeFINAL2.svg</description>
      <pubDate>Fri, 16 Jan 2026 00:00:00 GMT</pubDate>
      <link>https://researchdata.se/sv/catalogue/dataset/doi-10-5281-zenodo-18266174</link>
      <guid>https://researchdata.se/sv/catalogue/dataset/doi-10-5281-zenodo-18266174</guid>
      <dc:publisher>Mälardalens universitet</dc:publisher>
      <dc:creator>Syrjänen, Elmeri</dc:creator>
      <dc:creator>Silva, Joana</dc:creator>
      <dc:creator>Astrand, Elaine</dc:creator>
    </item>
    <item>
      <title>Data Set: Software-Related Fatal Failures: An Empirical Exploration of RISKS Reports</title>
      <description>About the dataset

This dataset accompanies the study Software-Related Fatal Failures: An Empirical Exploration of RISKS Reports. It contains 73 documented cases, dated from 1978 to 2014, in which software was considered a crucial contributing factor to an accident involving one or more fatalities.

The cases were identified primarily through the ACM SIGSOFT Software Engineering Notes series RISKS to the Public in Computers and Related Systems. The dataset also records supporting references such as official investigations, scientific publications, books, newspapers, and magazines where these were available.

Purpose

The dataset was created to provide an empirical basis for investigating software-related fatal failures. It supports research into:

fatalities reported in connection with software-related failures;

the probable main causes of these failures;

the industries and application areas in which they occurred;

the roles of software, hardware, users, interfaces, and operating conditions; and

the quality and completeness of publicly available evidence.

It is intended as a starting point for replication, validation, correction, extension, and comparative research in software safety, dependable systems, human-computer interaction, accident analysis, and risk management.

Dataset contents

Each row represents one reported case. The fields describe the date, number of deaths, location, nature of the accident, principal contributing faults, probable main-cause category, industry or application area, assessed data quality, references, and relevant notes.

Probable main causes are classified as Physical, Software, Physical and Software, User-Software Interaction, or Insufficient Data. Evidence quality is classified as Good, Poor, or Controversial.

Important limitations

In this dataset, software-related does not mean that software was necessarily the sole or root cause. Many accidents involved interactions among software, hardware, users, interfaces, operating procedures, training, environmental conditions, and organizational factors.

The collection is based on publicly available reporting and should not be interpreted as a complete census of software-related fatalities. Cases may be missing, incompletely investigated, disputed, or documented only through secondary sources. Fatality counts and causal classifications should therefore be treated as research estimates rather than definitive legal or technical findings.

Reuse

Researchers extending this dataset are encouraged to verify cases against primary or official sources, preserve the original case numbers, document all changes and reclassifications, and provide provenance information for newly added evidence.

Suggested citation

Sycofyllos, Nikolaos, and Eduard Paul Enoiu. 2021. Data Set: Software-Related Fatal Failures: An Empirical Exploration of RISKS Reports. Zenodo. DOI: 10.5281/zenodo.5493688.</description>
      <pubDate>Wed, 08 Sep 2021 00:00:00 GMT</pubDate>
      <link>https://researchdata.se/sv/catalogue/dataset/doi-10-5281-zenodo-5493688</link>
      <guid>https://researchdata.se/sv/catalogue/dataset/doi-10-5281-zenodo-5493688</guid>
      <dc:publisher>Mälardalens universitet</dc:publisher>
      <dc:creator>Nikolaos Sycofyllos</dc:creator>
      <dc:creator>Eduard Paul Enoiu</dc:creator>
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