MovDisordV3, Main, Exploration, bibRecord, 004D24

Intersubject variability and intrasubject reproducibility of the bereitschaftspotential

Identifieur interne : 004D24 ( Main/Exploration ); précédent : 004D23; suivant : 004D25

Intersubject variability and intrasubject reproducibility of the bereitschaftspotential

Auteurs : Virgilio Gerald H. Evidente [Philippines] ; John N. Caviness [Philippines] ; Bonnie Jamieson [États-Unis] ; Amy Weaver [États-Unis] ; Neel Joshi [États-Unis]

Source :

Movement Disorders [ 0885-3185 ] ; 1999-03.

RBID : ISTEX:88493B0A72FBC2FC07B74C0A96A64A9563A362EC

Descripteurs français

Pascal (Inist)
- Comparaison interindividuelle, Exploration, Homme, Potentiel évoqué, Préparation motrice.
Wicri :
- topic : Homme.

English descriptors

KwdEn :
- Adolescent, Adult, Analysis of Variance, Automatic Data Processing, Back‐averaging, Bereitschaftspotential, Cerebral Cortex (physiology), EEG, Electroencephalography (methods), Electroencephalography (standards), Electroencephalography (statistics & numerical data), Electromyography, Evoked Potentials, Motor (physiology), Evoked potential, Exploration, Female, Human, Humans, Interindividual comparison, Longitudinal Studies, Male, Middle Aged, Motor Activity (physiology), Motor preparation, Muscle Contraction (physiology), Reproducibility of Results, Sample Size, Volition (physiology), Wrist.
MESH :
- methods : Electroencephalography.
- physiology : Cerebral Cortex, Evoked Potentials, Motor, Motor Activity, Muscle Contraction, Volition.
- standards : Electroencephalography.
- statistics & numerical data : Electroencephalography.
- Adolescent, Adult, Analysis of Variance, Automatic Data Processing, Electromyography, Female, Humans, Longitudinal Studies, Male, Middle Aged, Reproducibility of Results, Sample Size, Wrist.

Abstract

We assessed the intersubject variability and intrasubject reproducibility of the bereitschaftspotential (BP). Twenty healthy volunteers performed extensions of their wrist in a self‐paced manner every 5–10 seconds. A surface electromyography (EMG) electrode was attached to the wrist extensor group of the dominant hand to record at least 100 wrist movements, and electroencephalography electrodes were placed over the scalp. Trials were performed at baseline, 15 minutes, 4 hours, and 4 weeks. Measures derived from the BP included area 1 (−2000 to −650 msec), area 2 (−650–0 msec), total area (area 1 + area 2), amplitude at −650 msec, amplitude at peak negativity prior to EMG onset, and amplitude at 0 msec (trigger). Our findings revealed different variability/reproducibility depending on the particular BP measure being analyzed. Using intraclass correlation coefficient (ICC) and concordance correlation coefficient (CCC) as measures of intrasubject reproducibility, area 2, amplitude at peak negativity prior to EMG onset, and amplitude at 0 msec produced the best values. We conclude that in studies that attempt to quantify BP changes before and after an intervention in the same group of subjects, the most reproducible BP measures are those pertaining to the late BP component.

Url:

https://api.istex.fr/document/88493B0A72FBC2FC07B74C0A96A64A9563A362EC/fulltext/pdf

DOI: 10.1002/1531-8257(199903)14:2<313::AID-MDS1017>3.0.CO;2-1

Affiliations:

Le document en format XML

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<term>Back‐averaging</term>
<term>Bereitschaftspotential</term>
<term>Cerebral Cortex (physiology)</term>
<term>EEG</term>
<term>Electroencephalography (methods)</term>
<term>Electroencephalography (standards)</term>
<term>Electroencephalography (statistics & numerical data)</term>
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<term>Motor preparation</term>
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<term>Reproducibility of Results</term>
<term>Sample Size</term>
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<front><div type="abstract" xml:lang="en">We assessed the intersubject variability and intrasubject reproducibility of the bereitschaftspotential (BP). Twenty healthy volunteers performed extensions of their wrist in a self‐paced manner every 5–10 seconds. A surface electromyography (EMG) electrode was attached to the wrist extensor group of the dominant hand to record at least 100 wrist movements, and electroencephalography electrodes were placed over the scalp. Trials were performed at baseline, 15 minutes, 4 hours, and 4 weeks. Measures derived from the BP included area 1 (−2000 to −650 msec), area 2 (−650–0 msec), total area (area 1 + area 2), amplitude at −650 msec, amplitude at peak negativity prior to EMG onset, and amplitude at 0 msec (trigger). Our findings revealed different variability/reproducibility depending on the particular BP measure being analyzed. Using intraclass correlation coefficient (ICC) and concordance correlation coefficient (CCC) as measures of intrasubject reproducibility, area 2, amplitude at peak negativity prior to EMG onset, and amplitude at 0 msec produced the best values. We conclude that in studies that attempt to quantify BP changes before and after an intervention in the same group of subjects, the most reproducible BP measures are those pertaining to the late BP component.</div>
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Movement Disorders (revue)

Intersubject variability and intrasubject reproducibility of the bereitschaftspotential

Intersubject variability and intrasubject reproducibility of the bereitschaftspotential

Source :

Descripteurs français

English descriptors

Abstract

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

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri

	Movement Disorders (revue)
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