نتایج جستجو برای: ‎SSVEP‎

تعداد نتایج: 520  

2011
Fei Teng Yixin Chen Aik Min Choong Scott Gustafson Christopher Reichley Pamela B. Lawhead Dwight Waddell

Steady state visual evoked potential (SSVEP) is the brain's natural electrical potential response for visual stimuli at specific frequencies. Using a visual stimulus flashing at some given frequency will entrain the SSVEP at the same frequency, thereby allowing determination of the subject's visual focus. The faster an SSVEP is identified, the higher information transmission rate the system ach...

2014
Zhenghua Wu

Since the discovery of steady-state visually evoked potential (SSVEP), it has been used in many fields. Numerous studies suggest that there exist three SSVEP neural networks in different frequency bands. An obvious phenomenon has been observed, that the amplitude and phase of SSVEP can be modulated by a cognitive task. Previous works have studied this modulation on separately activated SSVEP ne...

Journal: :Tsinghua Science & Technology 2023

Although notable progress has been made in the study of Steady-State Visual Evoked Potential (SSVEP)-based Brain-Computer Interface (BCI), several factors that limit practical applications BCIs still exist. One these is importability stimulator. In this study, Augmented Reality (AR) technology was introduced to present visual stimuli SSVEP-BCI, while robot grasping experiment designed verify ap...

2013
Peng Xu ChunYang Tian YangSong Zhang Wei Jing ZhenYu Wang TieJun Liu Jun Hu Yin Tian Yang Xia DeZhong Yao

Steady state visual evoked potentials (SSVEP) are assumed to be regulated by multiple brain areas, yet the underlying mechanisms are not well understood. In this study, we utilized multi-channel intracranial recordings together with network analysis to investigate the underlying relationships between SSVEP and brain networks in anesthetized rat. We examined the relationship between SSVEP amplit...

Journal: :Journal of neuroscience methods 2015
Minjue Wang Ian Daly Brendan Z Allison Jing Jin Yu Zhang Lanlan Chen Xingyu Wang

BACKGROUND P300 and steady-state visual evoked potential (SSVEP) approaches have been widely used for brain-computer interface (BCI) systems. However, neither of these approaches can work for all subjects. Some groups have reported that a hybrid BCI that combines two or more approaches might provide BCI functionality to more users. Hybrid P300/SSVEP BCIs have only recently been developed and va...

2010
Francois-Benoit Vialatte Monique Maurice Toshihisa Tanaka Yoko Yamaguchi Andrzej Cichocki

The present study seeks to investigate the limits of scalp EEG (electroencephalogram) SSVEP (Steady State Visual Evoked Potentials) phenomena (to which maximal and minimal frequencies SSVEP can be recorded at the scalp level). SSVEP are periodic evoked signals buried in the non-stationary waves of EEG recordings. EEG signals are furthermore noisy and contain artifacts which may interfere with b...

Journal: :Brain science advances 2022

Recently, steady-state visual evoked potential (SSVEP) has become one of the most popular electroencephalography paradigms due to its high information transfer rate. Several approaches have been proposed improve performance SSVEP. The calibration-free scenario is significant in SSVEP-based brain–computer interface systems, where subject first time use system. participating teams several effecti...

2014
Teng Cao Feng Wan Chi Man Wong Janir Nuno da Cruz Yong Hu

BACKGROUND The fatigue that users suffer when using steady-state visual evoked potential (SSVEP)-based brain-computer interfaces (BCIs) can cause a number of serious problems such as signal quality degradation and system performance deterioration, users' discomfort and even risk of photosensitive epileptic seizures, posing heavy restrictions on the applications of SSVEP-based BCIs. Towards alle...

2001
M. Cheng X. Gao S. Gao D. Xu

Steady state visual evoked potentials (SSVEP) are of the characteristics of high SNR and effectiveness in short-term identification of evoked responses. In most of the SSVEP experiments, single high frequency stimuli are used. To characterize the complex rhythms in SSVEP, a new multiple color stimulus pattern is proposed in this paper. FFT and bispectrum analysis methods are used to detect the ...

Journal: :Biomed. Signal Proc. and Control 2012
Yu Zhang Jing Jin Xiangyun Qing Bei Wang Xingyu Wang

Steady-state visual evoked potential (SSVEP) has been increasingly used for the study of brain–computer interface (BCI). How to recognize SSVEP with shorter time and lower error rate is one of the key points to develop a more efficient SSVEP-based BCI. To achieve this goal, we make use of the sparsity constraint of the least absolute shrinkage and selection operator (LASSO) for the extraction o...

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