نتایج جستجو برای: ثبت همزمان EEG-fMRI
تعداد نتایج: 107919 فیلتر نتایج به سال:
به خاطر رزولوشن زمانی خوب EEG و رزولوشن مکانی مناسب fMRI ترکیب اطلاعات همزمان آنها می تواند بهبود عملکرد مکانیابی را به دنبال داشته باشد. در این مقاله سعی شده با استفاده از اطلاعات این دو مدالیته در یک ثبت همزمان به مکانیابی کانونهای صرعی پرداخته شود. بنابراین نخست از طریق شناسایی وقایع اینترایکتال و میانگینگیری، یک الگوی اسپایکر مستخرج از EEG خارج اسکنر ساختهشده و سپس از طریق اعمال همبس...
• The HC and aMCI subjects showed similar retrieval success patterns in fMRI analysis. diminished ERP old/new effects within the pattern. Disturbed correlate of recollection component was related to EM function. disturbed cognitive processes despite preserved Episodic memory (EM) deficit is core dysfunction amnestic mild impairment (aMCI). However, episodic pattern detected by functional MRI (f...
Electroencepholography (EEG) and functional magnetic resonance imaging (fMRI) are two ways of recording brain activity; the former provides good time resolution but poor spatial resolution, while converse is true for latter. Recently, deep neural network models have been developed that can synthesize fMRI activity from EEG signals, vice versa. Because these generative simulate data, they make i...
Simultaneous EEG-fMRI is a non-invasive investigation technique developed to localize the generators of interictal epileptiform discharges (IED) in patients with epilepsy. Although the value of EEG-fMRI in epilepsy presurgical evaluation is being assessed clinically, its utility is still controversial. In this review, we considered EEG-fMRI applications in epilepsy presurgical evaluation with a...
Introduction Simultaneous acquisition of fMRI and EEG is thought to be a potential solution for enhancing the temporal resolution of fMRI. To enhance the temporal resolution of fMRI with aids of the EEG data, it is essential to match the fMRI data precisely with the EEG data in the spatial domain. For better spatial matching between fMRI and EEG, we applied EEG source localization to the EP/ERP...
fMRI-constrained EEG/MEG source imaging can be a powerful tool in studying human brain functions with enhanced spatial and temporal resolutions. Recent studies on the combination of fMRI and EEG/MEG have suggested that fMRI prior information could be readily implemented by simply imposing different weighting factors to cortical sources overlapping with the fMRI activations. It has been also rep...
Neurofeedback is a promising tool for brain rehabilitation and peak performance training. Neurofeedback approaches usually rely on a single brain imaging modality such as EEG or fMRI. Combining these modalities for neurofeedback training could allow to provide richer information to the subject and could thus enable him/her to achieve faster and more specific self-regulation. Yet unimodal and mu...
This thesis describes the method of EEG-correlated fMRI and its application to patients with epilepsy. First, an introduction on MRI and functional imaging methods in the field of epilepsy is provided. Then, the present and future role of EEG-correlated fMRI in the investigation of the epilepsies is discussed. The fourth chapter reviews the important practicalities of EEG-correlated fMRI that w...
NATIONAL REVIEW OF 291 OBIOLOGY, VOL. 66 Copyright 2005, Elsev All rights re 0.1016/S0074-7742(05)66010-2 0074-7742/05 II. T he Signals A. E EG B. f MRI III. T he Relation Between EEG and fMRI Signals IV. N onsimultaneous and Simultaneous EEG and fMRI Data Acquisition A. N onsimultaneous EEG–fMRI Acquisition B. S imultaneous EEG–fMRI Acquisition C. f MRI Data Acquisition V. A rtifact Reduction ...
Combined EEG/fMRI recording has been used to localize the generators of EEG events and to identify subject state in cognitive studies and is of increasing interest. However, the large EEG artifacts induced during fMRI have precluded simultaneous EEG and fMRI recording, restricting study design. Removing this artifact is difficult, as it normally exceeds EEG significantly and contains components...
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