Unilateral Left-Hand Contractions Produce Widespread Depression of Cortical Activity after Their Execution

Publikationstyp:
Zeitschriftenaufsatz
Metadaten:
Autoren
Autoren-URL
https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=fis-test-1&SrcAuth=WosAPI&KeyUT=WOS:000367451400087&DestLinkType=FullRecord&DestApp=WOS_CPL
DOI
10.1371/journal.pone.0145867
Externe Identifier
  • Clarivate Analytics Document Solution ID: CZ9XO
  • PubMed Identifier: 26709832
ISSN
1932-6203
Ausgabe der Veröffentlichung
12
Zeitschrift
PLOS ONE
Artikelnummer
ARTN e0145867
Datum der Veröffentlichung
2015
Status
Published
Titel
Unilateral Left-Hand Contractions Produce Widespread Depression of Cortical Activity after Their Execution
Sub types
  • Article
Ausgabe der Zeitschrift
10

Datenquelle: Web of Science (Lite)

Andere Metadatenquellen:
Autoren
DOI
10.1371/journal.pone.0145867
Editoren
  • Natasha M Maurits
eISSN
1932-6203
Ausgabe der Veröffentlichung
12
Zeitschrift
PLOS ONE
Sprache
en
Online publication date
2015
Paginierung
e0145867 - e0145867
Status
Published online
Herausgeber
Public Library of Science (PLoS)
Herausgeber URL
http://dx.doi.org/10.1371/journal.pone.0145867
Datum der Datenerfassung
2022
Titel
Unilateral Left-Hand Contractions Produce Widespread Depression of Cortical Activity after Their Execution
Ausgabe der Zeitschrift
10

Datenquelle: Crossref

Abstract
The execution of unilateral hand contractions before performance has been reported to produce behavioral aftereffects in various tasks. These effects have been regularly attributed to an induced shift in activation asymmetry to the contralateral hemisphere produced by the contractions. An alternative explanation proposes a generalized state of reduced bilateral cortical activity following unilateral hand contractions. The current experiment contrasted the above explanation models and tested the state of cortical activity after the termination of unilateral hand contractions. Twenty right-handed participants performed hand contractions in two blocks, one for each hand. Using electroencephalogram (EEG), the broad alpha band and its asymmetry between hemispheres before, during, and after hand contractions were analyzed. During contractions, significant bilateral decrease in alpha amplitudes (indicating cortical activation) emerged for both hands around sensory-motor regions. After contractions, alpha amplitudes increased significantly over the whole scalp when compared to baseline, but only for the left hand. No modulation of hemispheric asymmetry was observed at any phase. The results suggest that unilateral hand contractions produce a state of reduced cortical activity after their termination, which is more pronounced if the left hand was used. Consequently, we propose that the reduced cortical activity (and not the persistent activation asymmetry) may facilitate engagement in subsequent behavior, probably due to preventing interference from other, nonessential cortical regions.
Addresses
  • Chair of Sport Psychology, Technische Universität München, München, Germany.
Autoren
DOI
10.1371/journal.pone.0145867
eISSN
1932-6203
Externe Identifier
  • PubMed Identifier: 26709832
  • PubMed Central ID: PMC4692494
Open access
true
ISSN
1932-6203
Ausgabe der Veröffentlichung
12
Zeitschrift
PloS one
Schlüsselwörter
  • Hand
  • Motor Cortex
  • Humans
  • Electroencephalography
  • Alpha Rhythm
  • Task Performance and Analysis
  • Muscle Contraction
  • Models, Neurological
  • Adult
  • Female
  • Male
  • Functional Laterality
  • Young Adult
Sprache
eng
Medium
Electronic-eCollection
Online publication date
2015
Open access status
Open Access
Paginierung
e0145867
Datum der Veröffentlichung
2015
Status
Published
Publisher licence
CC BY
Datum der Datenerfassung
2015
Titel
Unilateral Left-Hand Contractions Produce Widespread Depression of Cortical Activity after Their Execution.
Sub types
  • research-article
  • Journal Article
Ausgabe der Zeitschrift
10

Files

https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0145867&type=printable https://europepmc.org/articles/PMC4692494?pdf=render

Datenquelle: Europe PubMed Central

Abstract
The execution of unilateral hand contractions before performance has been reported to produce behavioral aftereffects in various tasks. These effects have been regularly attributed to an induced shift in activation asymmetry to the contralateral hemisphere produced by the contractions. An alternative explanation proposes a generalized state of reduced bilateral cortical activity following unilateral hand contractions. The current experiment contrasted the above explanation models and tested the state of cortical activity after the termination of unilateral hand contractions. Twenty right-handed participants performed hand contractions in two blocks, one for each hand. Using electroencephalogram (EEG), the broad alpha band and its asymmetry between hemispheres before, during, and after hand contractions were analyzed. During contractions, significant bilateral decrease in alpha amplitudes (indicating cortical activation) emerged for both hands around sensory-motor regions. After contractions, alpha amplitudes increased significantly over the whole scalp when compared to baseline, but only for the left hand. No modulation of hemispheric asymmetry was observed at any phase. The results suggest that unilateral hand contractions produce a state of reduced cortical activity after their termination, which is more pronounced if the left hand was used. Consequently, we propose that the reduced cortical activity (and not the persistent activation asymmetry) may facilitate engagement in subsequent behavior, probably due to preventing interference from other, nonessential cortical regions.
Date of acceptance
2015
Autoren
Autoren-URL
https://www.ncbi.nlm.nih.gov/pubmed/26709832
DOI
10.1371/journal.pone.0145867
eISSN
1932-6203
Externe Identifier
  • PubMed Central ID: PMC4692494
Ausgabe der Veröffentlichung
12
Zeitschrift
PLoS One
Schlüsselwörter
  • Adult
  • Alpha Rhythm
  • Electroencephalography
  • Female
  • Functional Laterality
  • Hand
  • Humans
  • Male
  • Models, Neurological
  • Motor Cortex
  • Muscle Contraction
  • Task Performance and Analysis
  • Young Adult
Sprache
eng
Country
United States
Paginierung
e0145867
PII
PONE-D-15-26115
Datum der Veröffentlichung
2015
Status
Published online
Datum, an dem der Datensatz öffentlich gemacht wurde
2016
Titel
Unilateral Left-Hand Contractions Produce Widespread Depression of Cortical Activity after Their Execution.
Sub types
  • Journal Article
Ausgabe der Zeitschrift
10

Datenquelle: PubMed

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