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Region-Specific EEG Classification of Hypnotic Susceptibility Using a Sliding-Window 2D CNN: A Subject-Independent Evaluation

Krzysztof Wróbel, Grzegorz M. Wójcik · 2026 · arXiv (Cornell University)

DOI: 10.48550/arxiv.2610.28427 · cited by 0 works (OpenAlex) · open-access PDF

Japanese

当社は、最小限に前処理されたEEG信号で訓練された2Dコンヴォレーションニューラルネットワーク(CNN)が、異なる脳領域で催眠的感受性を分類することができるかどうかを、LOSEG依存性に基づいて調査します。 六十二人の男性参加者(32 Control、30 Guided Imagery/Hipno group)は、256チャンネルEGIキャップを使用して20分間のEEGレコーディングを受けました。 スライディングウィンドウアプローチは、レコーディング内のすべての10秒のウィンドウを評価します。 七つの事前定義された脳領域(前面、前面、時間、中央、パリエタラル、頭蓋骨、および顔)のそれぞれで、最大868個まで独立して

Machine translation (Meta M2M100); the English original follows.

Abstract

We investigate whether a 2D Convolutional Neural Network (CNN) trained on minimally preprocessed EEG signals can classify hypnotic susceptibility across distinct brain regions. Sixty-two male participants (32 Control, 30 Guided Imagery / Hipno group) underwent a 20-minute EEG recording using a 256-channel EGI cap. A sliding-window approach evaluates all 10-second windows within the recording for each of seven predefined brain regions (prefrontal, frontal, temporal, central, parietal, occipital, and facial), yielding up to 868 independently trained models. Initial screening with a segment-level 90/10 random split showed that five regions exceeded the 0.67 accuracy threshold, with the occipital region achieving the highest mean accuracy (0.721) across 90.3% of windows. Subject-independent evaluation via Leave-One-Subject-Out (LOSO) cross-validation, however, substantially revised this picture: occipital performance collapsed to near-chance (mean ACC 0.453, AUC 0.429), revealing that high random-split accuracy was driven by subject-specific EEG fingerprints rather than genuine group differences. In contrast, the frontal and prefrontal regions maintained above-chance LOSO accuracy (0.646 and 0.624, respectively), demonstrating genuine generalisability. These results underscore the necessity of subject-independent validation in EEG-based classification studies and highlight anterior cortical regions as more reliable neural markers of hypnotic susceptibility.

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Topics: Electroencephalography, Hypnotic, Artificial intelligence, Convolutional neural network, Psychology, Hypnotic susceptibility

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