Balanced steady-state free precession (bSSFP) is an attractive fMRI method at high fields due to minimal spatial distortion. To examine sensitivity and specificity of bSSFP fMRI at ultrahigh magnetic field of 9.4T, we performed high-resolution pass-band high flip-angle (16°) bSSFP fMRI with four phase cycling (PC) angles at two repetition times (TR) of 10ms and 20ms and conventional gradient-re...

We describe an asymmetric approach to fMRI and MEG/EEG fusion in which fMRI data are treated as empirical priors on electromagnetic sources, such that their influence depends on the MEG/EEG data, by virtue of maximizing the model evidence. This is important if the causes of the MEG/EEG signals differ from those of the fMRI signal. Furthermore, each suprathreshold fMRI cluster is treated as a se...

We propose a method for retrospective motion correction of fMRI data in simultaneous EEG-fMRI that employs the EEG array as a sensitive motion detector. EEG motion artifacts are used to generate motion regressors describing rotational head movements with millisecond temporal resolution. These regressors are utilized for slice-specific motion correction of unprocessed fMRI data. Performance of t...

Background Dynamic functional network connectivity (dFNC) estimated from resting-state magnetic resonance imaging (rs-fMRI) is a potentially powerful approach to investigate human behavior and cognition. However, previous studies barely the reproducibility of dFNC features links with This study aims examine whether data collected in four different sessions reproduce same results using sleep sco...

Face recognition is impaired in patients with prosopagnosia, which may occur as a side effect of neurosurgical procedures. selective regions on the ventral temporal cortex have been localized electrical cortical stimulation (ECS), electrocorticography (ECoG), and functional magnetic resonance imagining (fMRI). This first group study using within-patient comparisons to validate face mapping, uti...

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...

The combination of functional Magnetic Resonance Imaging (fMRI) with Electroencephalography (EEG) and Magnetoencephalography (MEG) source reconstruction techniques promises to add temporal resolution in the [ms] range to fMRI activation maps. Depending on the available information, different co-registration methods for merging structural Magnetic Resonance Imaging (sMRI) and fMRI coordinate sys...

Existence of significant noise and artifacts in the fMRI signal complicates the problem of activation detection in the time domain. Because of poor signal-tonoise ratio (SNR) of the fMRI time series and confounding effects, the results of fMRI analysis are often unsatisfactory. In addition, the structure of fMRI noise is not known and still is an open problem. This makes the fMRI noise suppress...

Test-retest reliability of individual functional magnetic resonance imaging (fMRI) results is of importance in clinical practice and longitudinal experiments. While several studies have investigated reliability of task-induced motor network activation, less is known about the reliability of the task-free motor network. Here, we investigate the reproducibility of task-free fMRI, and compare it t...