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NeuroStream: spectral-spatio-temporal deep learning for visual stimulus classification from EEG.

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The 10 matches · 1 of them tie a paragraph to a whole file without given lines: a weak match, whose lines are not tinted
  1. [1] § Methods › Dataset ↔ scripts/generate-freqdistribution.py, lines 25 to 39 · score 0.73 · 14–70 Hz, 55–95 Hz, raw signal, 14 Hz, 55 Hz, EEG · Report a mismatch
  2. [2] § Results › Baselines and implementation details ↔ models/registery.py, the whole file · a weak match · score 0.68 · ATCNet, EEGNet, EEGConformer, EEGChannelNet, LSTM, model · Report a mismatch
  3. [3] § Methods › Dataset ↔ utils/lib.py, lines 184 to 306 · score 0.66 · 14–70 Hz, 55–95 Hz, 14 Hz, filtered, 55 Hz, channel · Report a mismatch
  4. [4] § Results › Block design confound › Semantic relabeling and generalization ↔ scripts/aggregate-results.py, lines 14 to 56 · score 0.66 · confidence intervals, random seeds, macro F1, confusion, validation, matrix · Report a mismatch
  5. [5] § Results › Block design confound › Semantic relabeling and generalization ↔ utils/evaluation-metrics.py, lines 5 to 31 · score 0.60 · confidence intervals, macro F1, confusion matrix, accuracy · Report a mismatch
  6. [6] § Results › Bias analysis ↔ scripts/bias-analysis.py, lines 130 to 221 · score 0.58 · multi class, confusion matrices, subject accuracies, bias, model · Report a mismatch
  7. [7] § Methods › Evaluation protocols ↔ utils/evaluation-metrics.py, lines 5 to 31 · score 0.55 · confidence intervals, macro F1, metric, accuracy · Report a mismatch
  8. [8] § Methods › Evaluation protocols ↔ scripts/aggregate-results.py, lines 14 to 56 · score 0.53 · confidence intervals, macro F1, metric, accuracy · Report a mismatch
  9. [9] § Results › Block design confound › Semantic relabeling and generalization ↔ scripts/aggregate-results.py, lines 58 to 89 · score 0.50 · confidence interval, macro F1, seed, raw, accuracy, model · Report a mismatch
  10. [10] § Methods › Spectral-spatio-temporal representation ↔ models/VisualTransforms.py, lines 123 to 187 · score 0.50 · log power, frequency bands, transformed · Report a mismatch

Paper

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The authors' code

Python · 100 lines · 3.7 KB · GPL-3.0 · 3 matches

  1. import glob
  2. import os
  3. import json
  4. import pandas as pd
  5. from pathlib import Path
  6. from ..utils import load_checkpoint
  7. import numpy as np
  8. # Import the metric calculation logic
  9. from ..utils.evaluation_metrics import compute_macro_f1_and_ci
  11. PKG_ROOT = Path(__file__).resolve().parents[1]
  12. MODELS_DIR = PKG_ROOT / "semantic_models"
  14. def aggregate_checkpoints():
  15. """
  16. Scans the directory for all checkpoints, groups them by Model and Dataset,
  17. and computes aggregated statistics across the random seeds.
  18. """
  19. model_files = glob.glob(f"{MODELS_DIR}/**/*.pth", recursive=True)
  21. # Dictionary to hold grouping: [Model][Dataset] -> list of run dicts
  22. grouped_results = {}
  24. for file_path in model_files:
  25. # We don't need the model state dict, just the metadata
  26. _, checkpoint = load_checkpoint(file_path, map_location="cpu")
  28. model_name = checkpoint.get("model_name", "Unknown_Model")
  29. dataset_name = checkpoint["dataset_options"]["eeg_dataset"].split("\\")[-1].split(".")[0]
  31. conf_mat = checkpoint.get("confusion_matrx")
  32. if conf_mat is None:
  33. continue # Skip if older checkpoint without matrix
  35. subject_acc = checkpoint["dataset_options"].get("subject_validation_acc", {})
  37. # Calculate true metrics from raw matrix
  38. acc, macro_f1, ci = compute_macro_f1_and_ci(conf_mat)
  40. run_data = {
  41. "seed_hash": checkpoint["model_hash"],
  42. "epoch": checkpoint["epoch"],
  43. "top1_accuracy": acc,
  44. "macro_f1": macro_f1,
  45. "confidence_interval": ci,
  46. "subject_bias": subject_acc
  47. }
  49. if model_name not in grouped_results:
  50. grouped_results[model_name] = {}
  51. if dataset_name not in grouped_results[model_name]:
  52. grouped_results[model_name][dataset_name] = []
  54. grouped_results[model_name][dataset_name].append(run_data)
  56. return generate_summary_report(grouped_results)
  58. def generate_summary_report(grouped_results):
  59. final_report = {}
  61. for model, datasets in grouped_results.items():
  62. final_report[model] = {}
  63. for dataset, runs in datasets.items():
  65. accs = [r["top1_accuracy"] for r in runs]
  66. f1s = [r["macro_f1"] for r in runs]
  67. cis = [r["confidence_interval"] for r in runs]
  69. # Extract average per-subject accuracy across seeds
  70. all_subjects = set(sub for r in runs for sub in r["subject_bias"].keys())
  71. subject_avg = {}
  72. for sub in all_subjects:
  73. sub_scores = [r["subject_bias"][sub] for r in runs if sub in r["subject_bias"]]
  74. subject_avg[f"Subject_{sub}"] = round(sum(sub_scores) / len(sub_scores), 4)
  76. final_report[model][dataset] = {
  77. "total_seeds_run": len(runs),
  78. "metrics": {
  79. "top1_accuracy_mean": round(float(np.mean(accs)), 4),
  80. "top1_accuracy_std": round(float(np.std(accs)), 4),
  81. "macro_f1_mean": round(float(np.mean(f1s)), 4),
  82. "macro_f1_std": round(float(np.std(f1s)), 4),
  83. "confidence_interval_mean": round(float(np.mean(cis)), 4)
  84. },
  85. "average_subject_accuracy": subject_avg,
  86. "raw_runs": runs
  87. }
  89. return final_report
  91. # TODO: make it accept the output as as a parameter
  92. if __name__ == "__main__":
  93. print("Aggregating checkpoint data without running inference...")
  94. report = aggregate_checkpoints()
  96. output_file = "bias_analysis_summary.json"
  97. with open(output_file, "w") as f:
  98. json.dump(report, f, indent=4)
  100. print(f"Aggregation complete! Clean data written to {output_file}.")

aggregate-results.py at commit fa800f4, under GPL-3.0 · at the source

Overview

Authors: Mohamed Abdelmagid1, Marwa Yusuf1,2, Basem M ElHalawany1,3, Ahmed Fares1,4
ORCID iDs: Mohamed Abdelmagid, Marwa Yusuf, Basem M ElHalawany, Ahmed Fares
  1. Electrical Engineering Department, Faculty of Engineering at Shoubra, Benha University, Cairo, Egypt
  2. Computer Science Faculty, Benha National University, Cairo, Egypt
  3. Electronics and Communication Engineering Department, Kuwait College of Science and Technology, Doha District, Kuwait
  4. Present Address: Egypt–Japan University of Science and Technology (E-JUST), Alexandria, Egypt
Institutions: Benha University (Egypt); Benha National University (Egypt); Kuwait College of Science and Technology (Kuwait); Egypt-Japan University of Science and Technology (Egypt)
Journal: Scientific reports, volume 16, issue 1, article 28489
Dates: received 6 March 2026; accepted 20 August 2026; published online 11 September 2026
Type: Research article · Language: English
License: CC BY
Identifiers: DOI 10.1038/s41598-026-68186-2 · PMID 42728336 · PMCID PMC13569483 · OpenAlex W7212258884
Open access: gold, a free copy (OpenAlex)
Status: code verified (how the code is found and verified)
Categories: EEG (modality), human (organism), methods / tools (subfield)
Methods: Statistics, Spectral & time-frequency, Machine learning
Keywords: EEG-classification, Brain-visual-representations, Multimodal-learning, Deep-learning, Computational biology and bioinformatics, Engineering, Neuroscience
MeSH: Deep Learning*, Electroencephalography*, Photic Stimulation*, Algorithms, Humans, Signal Processing, Computer-Assisted, Wavelet Analysis (* major topic)
Topic: EEG and Brain-Computer Interfaces (Cognitive Neuroscience, Neuroscience), according to OpenAlex
Funding: Science and Technology Development Fund; Benha University
Citations: not cited yet (Europe PMC); 65 references in the paper

Abstract

Electroencephalography (EEG)-based visual classification is a challenging task due to low spatial resolution, complex temporal dynamics, and potential experimental confounds, yet with the recent advances in EEG classification, it offers a cost-effective, portable alternative with millisecond-level temporal resolution to Functional Magnetic Resonance Imaging (fMRI) for large scale studies and real-time applications. We propose a novel Spectral-Spatio-Temporal (SST) representation that transforms raw EEG signals into a structured, video-like format. Specifically, we compute wavelet transforms for all channels, aggregate log power into frequency bands, and map these features to electrode positions over time, thereby synthesizing the signal’s multi-dimensional dynamics into a unified, high-fidelity sequence. Building on this representation, we introduce the NeuroStream-SST framework, featuring a lightweight deep learning architecture optimized for spatiotemporal feature extraction. Experiments on the EEGCVPR40 dataset show that our approach reaches accuracy in the high-gamma band using standard dataset splits, outperforming existing methods evaluated under an identical protocol and demonstrating its ability to capture complex neural characteristics effectively. Furthermore, we implement a set of evaluation protocols designed to expose and quantify the contribution of temporal correlations to reported accuracy. decoding performance declines steadily as the association between class labels and recording sessions is weakened, and falls to the majority-class baseline once the sessions of the evaluated classes are withheld entirely. These findings highlight our framework as a promising direction for EEG-based visual decoding, with implications for brain-computer interfaces and cognitive neuroscience.

Reproduced under the paper's license (CC BY), from the paper cited above.

Repository

Its files are read in the Code ↔ Paper reader above, with 10 matches between paragraphs and lines of code.

aim97/Visual-brain-study

License: GPL-3.0
State: the link answers, verified on 26 September 2026
Evidence: files inventoried
Commit: fa800f425e9cadc8a7ef4c5e89c2ee59ec7be48b, 14 July 2026
Languages: Python (57), Shell (1)
Size: 84 files, 58 scripts
Software Heritage: not archived
Found in: “Code availability”
Holds: license file
Not found: README, CITATION.cff, environment file, tests, continuous integration, documentation
Tools: PyTorch (46 files), NumPy (20 files), pandas (11 files), Matplotlib (7 files), Braindecode (3 files), SciPy (3 files), PyWavelets (1 file), scikit-learn (1 file), seaborn (1 file)
Availability: 1 check, the latest on 26 September 2026: the link answers
  • 26 September 2026: the link answers
59 files
At the source: github.com/aim97/Visual-brain-study

Code availability

The code used to preprocess the data and implement the Spectral–Spatio–Temporal (SST) model is available in our project repository:https://github.com/aim97/Visual-brain-study.

Reproduced under the paper's license (CC BY), from the paper cited above.

Tracing map

Proposed by the machine: these links were found in the paper and verified at the source, without human review. The map will receive a Zenodo DOI once one of the paper's authors has validated it with their ORCID.

What the map holds:

  • 1 repository of the authors' code, each at its verified commit, with its license and how the link was found in the paper;
  • 58 scripts, each with its path and the digest of its content;
  • 10 matches between paragraphs of the paper and lines of the code (method lexical-v1);
  • neither the text of the paper nor the code itself.

Its JSON (tracing-map.json) is deposited on Zenodo with its DOI once the map is validated.

Data

No dataset and no data link were found in the paper.

Data Availability Statement

The EEGCVPR40 dataset used in this study is publicly available from the original authors at:https://github.com/perceivelab/eeg_visual_classification. This study does not redistribute the original EEG recordings. The train/validation/test split indices generated for our experiments are publicly available at:https://github.com/aim97/Visual-brain-study/tree/master/resources

The code used to preprocess the data and implement the Spectral–Spatio–Temporal (SST) model is available in our project repository:https://github.com/aim97/Visual-brain-study.

Reproduced under the paper's license (CC BY), from the paper cited above.

Versions

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Version 3, 28 September 2026

  • Funding: added Science and Technology Development Fund; Benha University

Version 1, 27 September 2026: the first record

Recorded: type, language, journal, volume, issue, pages, dates, 4 authors, 7 keywords, 7 MeSH terms, 51 references.

Cite

This paper

Abdelmagid, M., Yusuf, M., ElHalawany, B. M., & Fares, A. (2026). NeuroStream: spectral-spatio-temporal deep learning for visual stimulus classification from EEG. Scientific reports, 16(1), 28489. https://doi.org/10.1038/s41598-026-68186-2

BibTeX

@article{abdelmagid2026neurostream,
author = {Abdelmagid, Mohamed and Yusuf, Marwa and ElHalawany, Basem M and Fares, Ahmed},
title = {{NeuroStream: spectral-spatio-temporal deep learning for visual stimulus classification from EEG}},
journal = {Scientific reports},
year = {2026},
month = sep,
volume = {16},
number = {1},
pages = {28489},
publisher = {Nature Publishing Group},
issn = {2045-2322},
doi = {10.1038/s41598-026-68186-2},
url = {https://doi.org/10.1038/s41598-026-68186-2},
pmid = {42728336},
pmcid = {PMC13569483}
}

RIS

TY - JOUR
AU - Abdelmagid, Mohamed
AU - Yusuf, Marwa
AU - ElHalawany, Basem M
AU - Fares, Ahmed
TI - NeuroStream: spectral-spatio-temporal deep learning for visual stimulus classification from EEG
T2 - Scientific reports
J2 - Sci Rep
PY - 2026
DA - 2026/09/11
VL - 16
IS - 1
SP - 28489
SN - 2045-2322
PB - Nature Publishing Group
DO - 10.1038/s41598-026-68186-2
UR - https://doi.org/10.1038/s41598-026-68186-2
LA - en
ER -

CSL-JSON

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