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20 results for “Understanding of functional MRI data”

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cs.LGcs.AIcs.CVRecentMay 28, 2026

Functional MRI Time Series Generation via Wavelet-Based Image Transform and Spectral Flow Matching for Brain Disorder Identification

Hwa Hui Tew, Junn Yong Loo, Fang Yu Leong, Julia K. Lau +5 more

The paper introduces Dual-Spectral Flow Matching (DSFM), a novel generative framework that uses wavelet and cosine transforms to synthesize highly realistic, non-stationary fMRI time series for improv…

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q-bio.NCcs.HCEmpiricalRecentJun 17, 2026

Retrieval-Based Brain Decoding by Alignment, not Complexity

Matteo Ciferri, Matteo Ferrante, Nicola Toschi

This paper investigates the use of contrastive objectives for brain decoding using functional MRI (fMRI) activity and shows that linear contrastive decoders outperform other methods.

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q-bio.NCeess.SPEmpiricalRecentJun 23, 2026

EEG Interpretation Across Chant Listening: A Single-Subject Pilot Investigation Using Spectral and Functional Connectivity Analysis

Prerna Singh, Aishwarya Ghosh, Neelam Sinha, Deepti Navaratna

This paper investigates neural activity during five auditory conditions using EEG recordings from a 5-year-old participant, revealing condition-specific modulation of neural oscillatory activity and d…

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cs.HCcs.AIcs.ROEmpiricalRecentJun 23, 2026

Average Rankings Mask Per-Subject Optimality: A Friedman-Nemenyi Benchmark of EEG Motor-Imagery BCI Decoders

Xavier Vasques, Paul Barbaste, Olivier Oullier

This paper compares different decoding pipelines for motor imagery tasks using EEG data and finds that no single pipeline dominates, emphasizing the need for participant-aware model selection.

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stat.MLcs.LGcs.SIEmpiricalRecentJun 27, 2026

Connectivity Estimation using Stochastic Graph Heat Modelling

Stephan Goerttler, Min Wu, Fei He

This paper extends a previous framework for estimating neurophysiological connectivity using noise-driven heat modelling on graphs, adding regularisation for improved robustness and relaxing noise ass…

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cs.CVcs.AIq-bio.NCRecentMay 28, 2026

Brain-IT-VQA: From Brain Signals to Answers

Roman Beliy, Matias Cosarinsky, Oliver Heinimann, Navve Wasserman +1 more

The paper introduces Brain-IT-VQA, a novel framework that significantly improves visual question answering from fMRI signals, and presents NSD-VQA, a new, highly controlled dataset for this task.

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cs.AIRecentMay 28, 2026

Benchmarking Positional Encoding Strategies for Transformer-Based EEG Foundation Models

Ayse Betul Yuce, Sebastian Stober

This paper benchmarks five positional encoding strategies for transformer-based EEG foundation models, concluding that the optimal encoding is task-dependent and no single strategy is universally supe…

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cs.LGcs.AIRecentMay 27, 2026

A Multi-dimensional Framework for Evaluating Generalization in EEG Foundation Models

Aditya Kommineni, Emily Zhou, Kleanthis Avramidis, Tiantian Feng +1 more

The paper proposes a multi-dimensional evaluation framework to assess EEG foundation models under realistic low-resource conditions, finding that while these models excel in long-context tasks, their…

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cs.LGcs.AIRecentMay 30, 2026

Dive into Waves: Morlet Spectral Transformer for Cross-Subject Emotion Decoding from EEG

Jiaxin Qing, Lexin Li

The paper proposes the Morlet Spectral Transformer (MST), a novel architecture that effectively decodes cross-subject emotion from EEG by designing specialized spectral and spatial representations, ou…

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cs.LGcs.AIRecentMay 27, 2026

Comparing Post-Hoc Explainable AI Methods for Interpreting Black-Box EEG Models in Depression Detection

Antonia Šarčević, Nikolina Frid

This study compares multiple post-hoc explainable AI methods (e.g., DeepSHAP, GradCAM) to interpret how deep learning models use EEG data to detect Major Depressive Disorder, finding that while method…

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cs.AIRecentMay 31, 2026

Brain-Atlas-Guided Generative Counterfactual Attention for Explainable Cognitive Decline Diagnosis Using Multimodal Connectomes

Xiongri Shen, Jiaqi Wang, Zhenxi Song, Yi Zhong +4 more

The paper proposes a novel Generative Counterfactual Attention-guided Network (GCAN) that uses multimodal connectomes and brain atlas knowledge to provide explainable and highly accurate diagnosis of…

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stat.MLcs.AIcs.LGRecentMay 29, 2026

Interpreting FCDNNs via RG on Exponential Family

Fuzhou Gong, Zigeng Xia

The paper establishes that the training process of fully connected deep neural networks (DNNs) on exponential family data is mathematically equivalent to performing a Renormalization Group (RG) calcul…

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q-bio.NCcs.AIRecentMay 27, 2026

Misalignment Between Backpropagation and the Hierarchy of Brain Responses to Images

Joséphine Raugel, Maximilian Seitzer, Marc Szafraniec, Huy V. Vo +5 more

While backpropagated gradients can predict human brain activity in the visual cortex, their spatial and temporal organization fundamentally diverges from the expected patterns of a biologically plausi…

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cs.CVcs.AIRecentMay 28, 2026

Rethinking FID Through the Geometry of the Reference Dataset

Yunghee Lee, Byeonghyun Pak

The paper argues that the standard FID metric is unreliable because its performance depends significantly on the geometric structure and density of the reference dataset, not just the sample quality.

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cs.CVEmpiricalRecentJul 1, 2026

High-dimensional Embedding Prior for Noisy K-space Domain MRIReconstruction

Yu Guan, Tianjia Huang, Qinrong Cai, Qiuyun Fan +2 more

A unified high-dimensional k-space reconstruction framework is proposed to enhance diffusion-based solvers for noisy MRI inverse problems through representation lifting.

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