ParkinsonFranceV1, PubMed, Checkpoint, bibRecord, 000933

Automatic removal of high-amplitude stimulus artefact from neuronal signal recorded in the subthalamic nucleus.

Identifieur interne : 000933 ( PubMed/Checkpoint ); précédent : 000932; suivant : 000934

Automatic removal of high-amplitude stimulus artefact from neuronal signal recorded in the subthalamic nucleus.

Auteurs : Tarik Al-Ani [France] ; Fanny Cazettes ; Stéphane Palfi ; Jean-Pascal Lefaucheur

Source :

Journal of neuroscience methods [ 1872-678X ] ; 2011.

RBID : pubmed:21463654

English descriptors

KwdEn :
- Algorithms, Artifacts, Automatic Data Processing (methods), Deep Brain Stimulation (methods), Humans, Models, Neurological, Motor Cortex (physiology), Neurons (physiology), Online Systems, Parkinson Disease (therapy), Reproducibility of Results, Subthalamic Nucleus (cytology), Subthalamic Nucleus (physiology).
MESH :
- cytology : Subthalamic Nucleus.
- methods : Automatic Data Processing, Deep Brain Stimulation.
- physiology : Motor Cortex, Neurons, Subthalamic Nucleus.
- therapy : Parkinson Disease.
- Algorithms, Artifacts, Humans, Models, Neurological, Online Systems, Reproducibility of Results.

Abstract

Over the last few years, deep brain stimulation (DBS) with targets such as the subthalamic nucleus or the pallidum were found to be beneficial in the treatment of Parkinson's disease and dystonia. The investigation of the mechanisms of action of DBS by recording concomitant neural activities in basal ganglia is hampered by the large stimulus artefacts (SA). Approaches to remove the SA with conventional filters, or other conventional digital methods, are not always effective due to the significant overlap between the spectral contents of the neuronal signal and the SA. Thus, such approaches may produce a significant residual SA or alter the neuronal signal dynamics by removing its frequency contents. In this work, we propose a method based on an on-line SA template extraction and on the Ensemble empirical mode decomposition (EEMD) to automatically detect and remove the dynamics of the SA without altering the embedded dynamics of the neuronal signal during stimulation. The results, based on real signals recorded in the subthalamic nucleus during Motor cortex stimulation (MCS) experiments, show that this technique, which may be applied on-line, effectively identifies, separates and removes the SA, and uncovers neuronal potentials superimposed on the artefact.

DOI: 10.1016/j.jneumeth.2011.03.022
PubMed: 21463654

Affiliations:

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Le document en format XML

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<front><div type="abstract" xml:lang="en">Over the last few years, deep brain stimulation (DBS) with targets such as the subthalamic nucleus or the pallidum were found to be beneficial in the treatment of Parkinson's disease and dystonia. The investigation of the mechanisms of action of DBS by recording concomitant neural activities in basal ganglia is hampered by the large stimulus artefacts (SA). Approaches to remove the SA with conventional filters, or other conventional digital methods, are not always effective due to the significant overlap between the spectral contents of the neuronal signal and the SA. Thus, such approaches may produce a significant residual SA or alter the neuronal signal dynamics by removing its frequency contents. In this work, we propose a method based on an on-line SA template extraction and on the Ensemble empirical mode decomposition (EEMD) to automatically detect and remove the dynamics of the SA without altering the embedded dynamics of the neuronal signal during stimulation. The results, based on real signals recorded in the subthalamic nucleus during Motor cortex stimulation (MCS) experiments, show that this technique, which may be applied on-line, effectively identifies, separates and removes the SA, and uncovers neuronal potentials superimposed on the artefact.</div>
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Automatic removal of high-amplitude stimulus artefact from neuronal signal recorded in the subthalamic nucleus.

Automatic removal of high-amplitude stimulus artefact from neuronal signal recorded in the subthalamic nucleus.

Source :

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Links to Exploration step

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri

Pour générer des pages wiki