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An Intraoperative EEG Biomarker for Postoperative Delirium Predicting Based on Interpretable Deep Learning Framework.

Code ↔ Paper

8 matches between paragraphs of the paper and lines of its authors' code, computed by the harvester (lexical-v1). Click a colored paragraph or line to see its counterpart.

The 8 matches
  1. [1] § Results › Best Temporal Filter Captures an EEG Signature of POD Individuals ↔ plot/Figure4.ipynb, lines 254–318 · score 0.69 · gradient boosting machine, multilayer perceptron, random forest, 10 %, training, accuracies
  2. [2] § Results › Best Temporal Filter Captures an EEG Signature of POD Individuals ↔ plot/figure_3.ipynb, lines 282–359 · score 0.69 · gradient boosting machine, multilayer perceptron, random forest, 10 %, training, accuracies
  3. [3] § Materials and Methods › Filter Analysis ↔ plot/Figure4.ipynb, lines 254–318 · score 0.68 · multilayer perceptron, gradient boosting, random forest, training, model
  4. [4] § Materials and Methods › Filter Analysis ↔ plot/figure_3.ipynb, lines 282–359 · score 0.68 · multilayer perceptron, gradient boosting, random forest, training, model
  5. [5] § Results › A Novel EEG Waveform as a Potential Biomarker for POD Early Warning ↔ plot/Figure5.ipynb, lines 187–248 · score 0.63 · power spectral density, confidence interval, target wave, 12 Hz
  6. [6] § Results › A Novel EEG Waveform as a Potential Biomarker for POD Early Warning ↔ plot/Figure5.ipynb, lines 561–662 · score 0.58 · biomarker events, confidence intervals, brain regions, bootstrap, min, POD
  7. [7] § Results › A Novel EEG Waveform as a Potential Biomarker for POD Early Warning ↔ plot/Figure5.ipynb, lines 561–662 · score 0.53 · confidence interval, brain regions, event, bootstrap, min, biomarkers
  8. [8] § Results › A Novel EEG Waveform as a Potential Biomarker for POD Early Warning ↔ supp_plot/supp_figure_4.ipynb, lines 74–140 · score 0.52 · power spectral density, target wave, PSD, POD, 12 Hz

Paper

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The authors' code

Jupyter notebook · 662 lines · 522 KB · no license · 3 matches

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Overview

Authors: Yinuo Zhang1, Yan Zhu1, Xinxin Zhang2,3,4, Xinke Shen1, Xuemiao Tang2,5, Zhihong Lu2,3,4, Chong Lei2,3,4, Mengyu Li2,3,4, Hailong Dong2,3,4, Zhichao Liang1,6, Quanying Liu1, Guangchao Zhao2,3,4
ORCID iDs: Guangchao Zhao
  1. Department of Biomedical Engineering, Southern University of Science and Technology, Shenzhen, Guangdong, China
  2. Department of Anesthesiology and Perioperative Medicine, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
  3. Key Laboratory of Anesthesiology (The Fourth Military Medical University), Ministry of Education, Xi'an, China
  4. Shaanxi Provincial Clinical Research Center for Anesthesiology Medicine, Xi'an, China
  5. Department of Anesthesiology, The Third People's Hospital of Chengdu, Chengdu, Sichuan, China
  6. Center for Neurocognition and Social Behavior, Artificial Intelligence Research Institute, Shenzhen University of Advanced Technology, Shenzhen, Guangdong, China
Journal: MedComm, volume 7, issue 9, article e70980
Dates: received 20 October 2025; accepted 23 June 2026; published online 6 September 2026
Type: Research article · Language: English
License: CC BY
Identifiers: DOI 10.1002/mco2.70980 · PMID 42707129 · PMCID PMC13547085 · OpenAlex W7210277326
Open access: gold, a free copy (OpenAlex)
Status: code verified
Categories: EEG (modality), human (organism), other condition (population), clinical / translational (subfield)
Methods: Spectral & time-frequency, Preprocessing, Connectivity, Statistics, Smoothing, state filtering, decompositions, Machine learning
Keywords: interpretable deep learning framework, multichannel EEG recording, postoperative delirium, spatiotemporal convolutional network
Topic: Intensive Care Unit Cognitive Disorders (Critical Care and Intensive Care Medicine, Medicine), according to OpenAlex
Funding: National Natural Science Foundation of China (2021ZD0200500, 82221001, 82271211, 82293643, 62472206, 82430040, 3254100307); Southern University of Science and Technology; Shenzhen Science and Technology Innovation Commission (KJZD20230923115221044, RCBS20231211090748082); National Science and Technology Major Project (2021ZD0200500, 2025ZD0218300); Basic and Applied Basic Research Foundation of Guangdong Province (2025A1515011645, 2026A1515010121, 2026B1515020099)
Citations: not cited yet (Europe PMC); 36 references in the paper

Abstract

Postoperative delirium (POD) is a common complication in older surgical patients and substantially worsens clinical outcomes, yet existing intraoperative electroencephalography (EEG) monitoring tools lack spatial and temporal specificity, creating a need for interpretable biomarkers. We prospectively analyzed 32‐channel intraoperative EEG from 71 patients aged ≥ 60 undergoing noncardiac surgery, trained an interpretable spatiotemporal convolutional network (ST‐CN), derived a best temporal filter (BTF), and evaluated model performance with region‐specific tests and independent external validation. The ST‐CN classified POD with 97.52% accuracy and an ROC of 0.996. The BTF alone discriminated POD with an AUC of 0.911 and achieved 85.12% accuracy using frontal EEG alone. It captured a distinct 2–12 Hz (δ–θ–α) oscillation in a spindle‐like envelope, which occurred at a significantly higher rate in POD patients (4.62 ± 0.15 vs. 3.88 ± 0.13 waves/min in the frontal region) and differed in central frequency and spectral power. Independent external validation further confirmed robust generalizability, with frontal EEG achieving 89.01% accuracy and an AUC of 0.950. This framework enables accurate, interpretable POD risk stratification and identifies a reproducible frontal EEG biomarker, supporting objective intraoperative early warning and individualized perioperative care.

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 8 matches between paragraphs and lines of code.

ncclab-sustech/POD-biomarker

License: none: the authors keep all their rights
State: the link answers, verified on 26 September 2026
Evidence: files inventoried
Commit: 0f9c56db9a968774970f1494373a6581407b2c88, 13 September 2025
Languages: Jupyter (8), Python (5)
Size: 166 files, 13 scripts
Software Heritage: not archived
Found in: “Data Availability Statement”
Holds: README, 8 notebooks
Not found: license file, CITATION.cff, environment file, tests, continuous integration, documentation
Tools: NumPy (11 files), Matplotlib (9 files), PyTorch (8 files), scikit-learn (7 files), MNE-Python (3 files), pandas (3 files), SciPy (3 files), seaborn (3 files)
Availability: 1 check, the latest on 26 September 2026: the link answers
  • 26 September 2026: the link answers
14 files, not copied: shown from their source

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The paper's code and data availability statement is in the Data section.

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;
  • 13 scripts, each with its path and the digest of its content;
  • 8 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 analysis code has been uploaded to GitHub, the code is available at https://github.com/ncclab‐sustech/POD‐biomarker.git (https://github.com/ncclab-sustech/POD-biomarker.git). Detailed experimental protocols and analysis code are provided in Section 4 Materials and Methods. The data that support the findings of this study are available upon reasonable request from the corresponding author.

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 National Natural Science Foundation of China: 2021ZD0200500, 82221001, 82271211, 82293643, 62472206, 82430040, 3254100307; Southern University of Science and Technology; Shenzhen Municipal Science and Technology Innovation Council: KJZD20230923115221044, RCBS20231211090748082; National Science and Technology Major Project: 2021ZD0200500, 2025ZD0218300; Basic and Applied Basic Research Foundation of Guangdong Province: 2025A1515011645, 2026A1515010121, 2026B1515020099

Version 1, 27 September 2026: the first record

Recorded: type, language, journal, volume, issue, pages, dates, 12 authors, 4 keywords, 36 references.

Cite

This paper

Zhang, Y., Zhu, Y., Zhang, X., Shen, X., Tang, X., Lu, Z., Lei, C., Li, M., Dong, H., Liang, Z., Liu, Q., & Zhao, G. (2026). An Intraoperative EEG Biomarker for Postoperative Delirium Predicting Based on Interpretable Deep Learning Framework. MedComm, 7(9), e70980. https://doi.org/10.1002/mco2.70980

BibTeX

@article{zhang2026intraoperative,
author = {Zhang, Yinuo and Zhu, Yan and Zhang, Xinxin and Shen, Xinke and Tang, Xuemiao and Lu, Zhihong and Lei, Chong and Li, Mengyu and Dong, Hailong and Liang, Zhichao and Liu, Quanying and Zhao, Guangchao},
title = {{An Intraoperative EEG Biomarker for Postoperative Delirium Predicting Based on Interpretable Deep Learning Framework}},
journal = {MedComm},
year = {2026},
month = sep,
volume = {7},
number = {9},
pages = {e70980},
publisher = {Wiley},
issn = {2688-2663},
doi = {10.1002/mco2.70980},
url = {https://doi.org/10.1002/mco2.70980},
pmid = {42707129},
pmcid = {PMC13547085}
}

RIS

TY - JOUR
AU - Zhang, Yinuo
AU - Zhu, Yan
AU - Zhang, Xinxin
AU - Shen, Xinke
AU - Tang, Xuemiao
AU - Lu, Zhihong
AU - Lei, Chong
AU - Li, Mengyu
AU - Dong, Hailong
AU - Liang, Zhichao
AU - Liu, Quanying
AU - Zhao, Guangchao
TI - An Intraoperative EEG Biomarker for Postoperative Delirium Predicting Based on Interpretable Deep Learning Framework
T2 - MedComm
J2 - MedComm (2020)
PY - 2026
DA - 2026/09/06
VL - 7
IS - 9
SP - e70980
SN - 2688-2663
PB - Wiley
DO - 10.1002/mco2.70980
UR - https://doi.org/10.1002/mco2.70980
LA - en
ER -

CSL-JSON

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