Single trial analysis of event related potentials: non-linear de-noising with wavelets

Effern, A.; Lehnertz, Klaus; Fernández, Guillén; Grünwald, Thomas; David, Peter; Elger, Christian E.

doi:10.1016/s1388-2457(00)00463-6

Cited by 50 publications

(30 citation statements)

References 27 publications

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“…Further, the nonstationarity of the EEG process usually does not allow constructing a global dynamical model for the whole observable [Skinner and Molnar, 2000]. Thus, regardless of how powerful or statistically significant the different estimations of averaged EEG phenomena may be, there might be difficulties in the meaningful interpretation of these if they are not matched to their piecewise stationary structure [Effern et al, 2000;Fingelkurts et al, 2002;Laskaris and Ioannides, 2001]. That is why the algorithms based on a nonstationary model of the EEG signal are of particular importance.…”

Section: Appendix a Methodological Aspects Of The Adaptive Level Eeg mentioning

confidence: 99%

Enhancement of GABA‐related signalling is associated with increase of functional connectivity in human cortex

Fingelkurts¹,

Fingelkurts²,

Kivisaari³

et al. 2004

Human Brain Mapping

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Structural or operational synchrony analysis with EEG was conducted in order to detect functional interaction between cortical areas during an enhanced inhibition induced by the GABAergic agonist lorazepam in a double-blind, randomized, placebo-controlled, cross-over study in eight healthy human subjects. Specifically, we investigated whether a neuronal inhibitory system in the brain mediates functional decoupling of cortical areas. Single-dose lorazepam administration resulted in a widespread increase in the inter-area functional connectivity and an increase in the strength of functional long-range and interhemispheric connections. These results suggest that inhibition can be an efficient mechanism for synchronization of large neuronal populations.

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Section: Appendix a Methodological Aspects Of The Adaptive Level Eeg mentioning

confidence: 99%

Enhancement of GABA‐related signalling is associated with increase of functional connectivity in human cortex

Fingelkurts¹,

Fingelkurts²,

Kivisaari³

et al. 2004

Human Brain Mapping

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“…Such trial-to-trial variability has been reported both for EEG [Effern et al, 2000;Jung et al, 2001] and fMRI [Duann et al, 2002;Kruggel and von Cramon, 1999]. This variability is typically not taken into account in classical analysis procedures that rely on averaging, as done for ERPs, or on fitting a model with constant amplitude, as performed for fMRI statistical maps.…”

Section: Introductionmentioning

confidence: 99%

Single‐trial analysis of oddball event‐related potentials in simultaneous EEG‐fMRI

Bénar¹,

Schön²,

Grimault³

et al. 2007

Human Brain Mapping

171

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There has recently been a growing interest in the use of simultaneous electroencephalography (EEG) and functional MRI (fMRI) for evoked activity in cognitive paradigms, thereby obtaining functional datasets with both high spatial and temporal resolution. The simultaneous recording permits obtaining event-related potentials (ERPs) and MR images in the same environment, conditions of stimulation, and subject state; it also enables tracing the joint fluctuations of EEG and fMRI signals. The goal of this study was to investigate the possibility of tracking the trial-to-trial changes in event-related EEG activity, and of using this information as a parameter in fMRI analysis. We used an auditory oddball paradigm and obtained single-trial amplitude and latency features from the EEG acquired during fMRI scanning. The single-trial P300 latency presented significant correlation with parameters external to the EEG (target-to-target interval and reaction time). Moreover, we obtained significant fMRI activations for the modulation by P300 amplitude and latency, both at the single-subject and at the group level. Our results indicate that, in line with other studies, the EEG can bring a new dimension to the field of fMRI analysis by providing fine temporal information on the fluctuations in brain activity.

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“…Laskaris et al, 1997) and noise suppression (e.g. Effern et al, 2000) and post-processing by most of the Pattern Analysis techniques, cited herein, for passing from a qualitative description to the quantitative modeling of the process generating the ST-data.…”

Section: Discussionmentioning

confidence: 99%

Semantic geodesic maps: a unifying geometrical approach for studying the structure and dynamics of single trial evoked responses

Laskaris

Ioannides

2002

Clinical Neurophysiology

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Single trial analysis of event related potentials: non-linear de-noising with wavelets

Cited by 50 publications

References 27 publications

Enhancement of GABA‐related signalling is associated with increase of functional connectivity in human cortex

Enhancement of GABA‐related signalling is associated with increase of functional connectivity in human cortex

Single‐trial analysis of oddball event‐related potentials in simultaneous EEG‐fMRI

Semantic geodesic maps: a unifying geometrical approach for studying the structure and dynamics of single trial evoked responses

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