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The brain electrical activity presents several short events during sleep that can be observed as distinctive micro-structures in the electroencephalogram (EEG), such as sleep spindles and K-complexes. These events have been associated with…

Signal Processing · Electrical Eng. & Systems 2020-10-06 Nicolás I. Tapia , Pablo A. Estévez

Accurate classification of sleep stages is crucial for the diagnosis and management of sleep disorders. Conventional approaches for sleep scoring rely on manual annotation or features extracted from EEG signals in the time or frequency…

Machine Learning · Computer Science 2025-10-10 Mehdi Zekriyapanah Gashti , Ghasem Farjamnia

If two signals are phase synchronous then the respective Fourier component at each spectral band should exhibit certain properties. In a pair of artificially generated phase synchronous signals the phase difference at each frequency band…

Neurons and Cognition · Quantitative Biology 2009-04-30 Kaushik Majumdar

EEG monitoring has an important milestone provide valuable information of those candidates who suffer from epilepsy.In this paper human normal and epileptic Electroencephalogram signals are analyzed with popular and efficient signal…

Computational Engineering, Finance, and Science · Computer Science 2018-02-26 Debadatta Dash

We introduce an innovative approach to automated sleep stage classification using EOG signals, addressing the discomfort and impracticality associated with EEG data acquisition. In addition, it is important to note that this approach is…

Signal Processing · Electrical Eng. & Systems 2023-10-09 Suvadeep Maiti , Shivam Kumar Sharma , Raju S. Bapi

Mental fatigue increases the risk of operator error in language comprehension tasks. In order to prevent operator performance degradation, we used EEG signals to assess the mental fatigue of operators in human-computer systems. This study…

Artificial Intelligence · Computer Science 2021-04-20 Chunhua Ye , Zhong Yin , Chenxi Wu , Xiayidai Abulaiti , Yixing Zhang , Zhenqi Sun , Jianhua Zhang

This paper proposes a novel framework for automatically capturing the time-frequency nature of electroencephalogram (EEG) signals of human sleep based on the authoritative sleep medicine guidance. The framework consists of two parts: the…

Machine Learning · Computer Science 2023-01-13 Zheng Chen , Ziwei Yang , Lingwei Zhu , Wei Chen , Toshiyo Tamura , Naoaki Ono , MD Altaf-Ul-Amin , Shigehiko Kanaya , Ming Huang

Deep Learning (DL) methods have been used for electrocardiogram (ECG) processing in a wide variety of tasks, demonstrating good performance compared with traditional signal processing algorithms. These methods offer an efficient framework…

Signal Processing · Electrical Eng. & Systems 2024-07-31 Adrian Atienza , Jakob Bardram , Sadasivan Puthusserypady

Electroencephalography (EEG) reflects the brain's functional state, making it a crucial tool for diverse detection applications like seizure detection and sleep stage classification. While deep learning-based approaches have recently shown…

Machine Learning · Computer Science 2025-10-07 Kerui Wu , Ziyue Zhao , Bülent Yener

Scientists at the Berkeley SETI Research Center are Searching for Extraterrestrial Intelligence (SETI) by a new signal detection method that converts radio signals into spectrograms through Fourier transforms and classifies signals…

Computer Vision and Pattern Recognition · Computer Science 2022-03-30 Zhewei Chen , Sami Ahmed Haider

Objective: The coupling between neuronal populations and its magnitude have been shown to be informative for various clinical applications. One method to estimate brain connectivity is with electroencephalography (EEG) from which the…

Computational Engineering, Finance, and Science · Computer Science 2017-05-08 Loukianos Spyrou , Mario Parra , Javier Escudero

Fourier transform methods are used to analyze functions and data sets to provide frequencies, amplitudes, and phases of underlying oscillatory components. Fast Fourier transform (FFT) methods offer speed advantages over evaluation of…

Data Analysis, Statistics and Probability · Physics 2015-07-08 Elya Courtney , Michael Courtney

Early recognition of abnormal rhythms in ECG signals is crucial for monitoring and diagnosing patients' cardiac conditions, increasing the success rate of the treatment. Classifying abnormal rhythms into exact categories is very challenging…

Machine Learning · Computer Science 2019-12-18 Jing Zhang , Jing Tian , Yang Cao , Yuxiang Yang , Xiaobin Xu

This paper presents a novel single-channel decomposition approach to facilitate the decomposition of electroencephalography (EEG) signals recorded with limited channels. Our model posits that an EEG signal comprises short, shift-invariant…

Signal Processing · Electrical Eng. & Systems 2024-11-15 Hiroshi Higashi

We propose a decomposition method for the spectral peaks in an observed frequency spectrum, which is efficiently acquired by utilizing the Fast Fourier Transform. In contrast to the traditional methods of waveform fitting on the spectrum,…

Signal Processing · Electrical Eng. & Systems 2022-04-19 Kaan Gokcesu , Hakan Gokcesu

Timely diagnosis is important for saving the life of epileptic patients. In past few years, a lot of treatments are available for epilepsy. These treatments require use of anti-seizure drugs but are not effective in controlling frequency of…

Machine Learning · Computer Science 2021-11-08 Shivam Gupta , Jyoti Meena , O. P Gupta

Sleeping problems have become one of the major diseases all over the world. To tackle this issue, the basic tool used by specialists is the Polysomnogram, which is a collection of different signals recorded during sleep. After its…

Machine Learning · Computer Science 2021-03-31 Enrique Fernandez-Blanco , Daniel Rivero , Alejandro Pazos

Electroencephalographic (EEG) monitoring of neural activity is widely used for sleep disorder diagnostics and research. The standard of care is to manually classify 30-second epochs of EEG time-domain traces into 5 discrete sleep stages.…

Machine Learning · Statistics 2018-05-21 Leon Chlon , Andrew Song , Sandya Subramanian , Hugo Soulat , John Tauber , Demba Ba , Michael Prerau

EEG emotion recognition faces significant hurdles due to noise interference, signal nonstationarity, and the inherent complexity of brain activity which make accurately emotion classification. In this study, we present the Fourier Adjacency…

Signal Processing · Electrical Eng. & Systems 2025-03-19 Jinfeng Wang , Yanhao Huang , Sifan Song , Boqian Wang , Jionglong Su , Jiaman Ding

We propose a computationally efficient algorithm for seizure detection. Instead of using a purely data-driven approach, we develop a hybrid model-based/data-driven method, combining convolutional neural networks with factor graph inference.…

Signal Processing · Electrical Eng. & Systems 2021-08-06 Bahareh Salafian , Eyal Fishel Ben , Nir Shlezinger , Sandrine de Ribaupierre , Nariman Farsad