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Main Authors: Zhang, Lina, Monsoor, Tonmoy, Li, Peizheng, Cui, Jiarui, Peng, Xinyi, Han, Chong, Sinha, Prateik, Dai, Siyuan, Pasqua, Jessica Nichole, McCrimmon, Colin M, Liu, Weiting, Miranda, Hailey Marie, Hu, Bing, Wu, Xiangting, Xu, Tengyou, Li, Chunhan, Tian, Jiaye, Tang, Jiarui, Ma, Detao, Kong, Lingye, Lyu, Junnan, Li, Jungang, Zan, Yan, Huang, Junhua, Mazumder, Rajarshi, Roychowdhury, Vwani
Format: Preprint
Published: 2026
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Online Access:https://arxiv.org/abs/2605.21852
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author Zhang, Lina
Monsoor, Tonmoy
Li, Peizheng
Cui, Jiarui
Peng, Xinyi
Han, Chong
Sinha, Prateik
Dai, Siyuan
Pasqua, Jessica Nichole
McCrimmon, Colin M
Liu, Weiting
Miranda, Hailey Marie
Hu, Bing
Wu, Xiangting
Xu, Tengyou
Li, Chunhan
Tian, Jiaye
Tang, Jiarui
Ma, Detao
Kong, Lingye
Lyu, Junnan
Li, Jungang
Zan, Yan
Huang, Junhua
Mazumder, Rajarshi
Roychowdhury, Vwani
author_facet Zhang, Lina
Monsoor, Tonmoy
Li, Peizheng
Cui, Jiarui
Peng, Xinyi
Han, Chong
Sinha, Prateik
Dai, Siyuan
Pasqua, Jessica Nichole
McCrimmon, Colin M
Liu, Weiting
Miranda, Hailey Marie
Hu, Bing
Wu, Xiangting
Xu, Tengyou
Li, Chunhan
Tian, Jiaye
Tang, Jiarui
Ma, Detao
Kong, Lingye
Lyu, Junnan
Li, Jungang
Zan, Yan
Huang, Junhua
Mazumder, Rajarshi
Roychowdhury, Vwani
contents While Multimodal Large Language Models (MLLMs) have demonstrated remarkable proficiency in general video understanding, their capacity to interpret involuntary, and spatio-temporally evolving pathologic motor behaviors such as seizure semiology remains largely untested. To address this gap, we introduce Seizure-Semiology-Suite, a clinically grounded dataset and benchmark for fine-grained, structured seizure semiology understanding. The dataset includes 438 seizure videos annotated with over 35,000 dense labels covering 20 ILAE-defined semiological features. Building on this dataset, we propose a seven-task hierarchical benchmark that systematically evaluates MLLMs from low-level visual perception to temporal sequencing, narrative report generation, and seizure diagnosis. To enable clinically meaningful evaluation of generated reports, we further introduce the Report Quality Index for Seizure Semiology (Seizure-RQI). Extensive baselines across 11 open-weight MLLMs reveal systematic weaknesses in laterality reasoning, temporal localization, symptom sequencing, and clinically faithful reporting. We show that seizure-specific fine-tuning substantially improves performance across tasks, and that a two-stage neuro-symbolic framework achieves an F1 score of 0.96 on epileptic versus non-epileptic seizure classification. Seizure-Semiology-Suite establishes a rigorous benchmark for evaluating multimodal models in safety-critical medical video understanding and guides the development of clinically reliable, domain-adaptive multimodal intelligence.
format Preprint
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institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Seizure-Semiology-Suite (S3): A Clinically Multimodal Dataset, Benchmark, and Models for Seizure Semiology Understanding
Zhang, Lina
Monsoor, Tonmoy
Li, Peizheng
Cui, Jiarui
Peng, Xinyi
Han, Chong
Sinha, Prateik
Dai, Siyuan
Pasqua, Jessica Nichole
McCrimmon, Colin M
Liu, Weiting
Miranda, Hailey Marie
Hu, Bing
Wu, Xiangting
Xu, Tengyou
Li, Chunhan
Tian, Jiaye
Tang, Jiarui
Ma, Detao
Kong, Lingye
Lyu, Junnan
Li, Jungang
Zan, Yan
Huang, Junhua
Mazumder, Rajarshi
Roychowdhury, Vwani
Computer Vision and Pattern Recognition
While Multimodal Large Language Models (MLLMs) have demonstrated remarkable proficiency in general video understanding, their capacity to interpret involuntary, and spatio-temporally evolving pathologic motor behaviors such as seizure semiology remains largely untested. To address this gap, we introduce Seizure-Semiology-Suite, a clinically grounded dataset and benchmark for fine-grained, structured seizure semiology understanding. The dataset includes 438 seizure videos annotated with over 35,000 dense labels covering 20 ILAE-defined semiological features. Building on this dataset, we propose a seven-task hierarchical benchmark that systematically evaluates MLLMs from low-level visual perception to temporal sequencing, narrative report generation, and seizure diagnosis. To enable clinically meaningful evaluation of generated reports, we further introduce the Report Quality Index for Seizure Semiology (Seizure-RQI). Extensive baselines across 11 open-weight MLLMs reveal systematic weaknesses in laterality reasoning, temporal localization, symptom sequencing, and clinically faithful reporting. We show that seizure-specific fine-tuning substantially improves performance across tasks, and that a two-stage neuro-symbolic framework achieves an F1 score of 0.96 on epileptic versus non-epileptic seizure classification. Seizure-Semiology-Suite establishes a rigorous benchmark for evaluating multimodal models in safety-critical medical video understanding and guides the development of clinically reliable, domain-adaptive multimodal intelligence.
title Seizure-Semiology-Suite (S3): A Clinically Multimodal Dataset, Benchmark, and Models for Seizure Semiology Understanding
topic Computer Vision and Pattern Recognition
url https://arxiv.org/abs/2605.21852