نتایج جستجو برای: fmri

تعداد نتایج: 36356  

Journal: :Encyclopedia 2020

Journal: :Schizophrenia bulletin open 2022

Abstract Background While advances in the field of functional magnetic resonance imaging (fMRI) provide new opportunities to study brain networks underlying experience hallucinations psychosis, there are methodological challenges unique symptom-capture studies. Study Design We extracted activated during hallucination-capture for schizophrenia patients when fMRI data collected from two sites was...

Journal: :Concepts in Magnetic Resonance Part A 2023

To explore the functional changes in whole brain network patients with sudden sensorineural hearing loss (SHL) at acute stage from magnetic resonance imaging (fMRI) evaluation results, 80 right SHL were selected as subjects (patient group). In addition, 40 healthy volunteers who underwent physical examination hospital during same period recruited a control group. fMRI was performed to analyze p...

Journal: :NeuroImage 2021

In recent years there has been growing interest in measuring time-varying functional connectivity between different brain regions using resting-state magnetic resonance imaging (rs-fMRI) data. One way to assess the relationship signals from is measure their phase synchronization (PS) across time. There are several ways perform such analyses, and we compare methods that utilize a PS metric toget...

Journal: :Epilepsy & Behavior 2021

It is often difficult to predict seizure recurrence in subjects who have suffered a first-ever epileptic seizure. In this study, the predictive value of physiological signals measured using Electroencephalography (EEG) and functional MRI (fMRI) assessed. particular those patients developing epilepsy (i.e. second unprovoked seizure) that were initially evaluated as having low risk are interest.I...

Journal: :Design Studies 2022

Functional magnetic resonance imaging (fMRI) enables identification of the brain regions and networks underpinning cognitive tasks. It has potential to significantly advance design science, but is challenging apply in studies methodological guidance for researchers lacking. In this Research Note, we reflect on our experiences other work outline activities involved developing executing fMRI stud...

Journal: :OBM neurobiology 2022

Functional magnetic resonance imaging (fMRI) is widely used to detect changes in the resting-state brain networks of migraine patients. connectivity fMRI analysis examines functional organization based on temporal correlations blood oxygen level-dependent signal different regions. Most previous studies have assumed that between regions remains relatively stable over time. However, it now known ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده برق و کامپیوتر 1392

تصویربرداری تشدید مغناطیسی عملکردی(fmri) با رزولوشن مکانی مناسب یک تکنیک قدرتمند برای مصورسازی فعالیت مغز انسان است. نتایج مطالعات صورت گرفته بر روی دادگان fmri حاکی از آن است که نواحی مجزای آناتومیکی مغز، فعالیت نورونی مشابهی در حالت استراحت از خود نشان می دهند. از این رو در سال های اخیر علاقه فراوانی به بررسی تقابل بین بخشهای مختلف مغز بر مبنای نوسانات خودبخودی سیگنال fmri بین نواحی مختلف مغز...

Journal: :Psyke and Logos 2021

Artiklen udforsker en ny interventionsmetode, real-time functional magnetic resonance neurofeedback (rt-fMRI-NF) samt dens effekt på emotioner og dysfunktion i emotionsregulering. En metode, som har været genstand for intensiv forskning de seneste ti år. I rt-fMRI-NF benyttes iltet blod et sporstof til at skabe billeder af hjernens aktivitet. Den afbildede aktivitet bliver så kommunikeret (genn...

Journal: :Psychological Review 2021

There is consensus that activation within distributed functional brain networks underlies human thought. The impact of this limited, however, by a gap exists between data-driven correlational analyses specify where activity localized using magnetic resonance imaging (fMRI), and neural process accounts how unfolds through time to give rise behavior. Here, we show an integrative cognitive neurosc...

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