EEG changes caused by spontaneous facial self-touch may represent emotion regulating processes and working memory maintenance
Identifieur interne : 001579 ( Main/Exploration ); précédent : 001578; suivant : 001580EEG changes caused by spontaneous facial self-touch may represent emotion regulating processes and working memory maintenance
Auteurs : Martin Grunwald [Allemagne] ; Thomas Weiss [Allemagne] ; Stephanie Mueller [Allemagne] ; Lysann Rall [Allemagne]Source :
- Brain research [ 0006-8993 ] ; 2014.
Descripteurs français
- Pascal (Inist)
English descriptors
- KwdEn :
Abstract
Spontaneous facial self-touch gestures (sFSTG) are performed manifold every day by every human being, primarily in stressful situations. These movements are not usually designed to communicate and are frequently accomplished with little or no awareness. The aim of the present study was to investigate whether sFSTG are associated with specific changes in the electrical brain activity that might indicate an involvement of regulatory emotional processes and working memory. Fourteen subjects performed a delayed memory task of complex haptic stimuli. The stimuli had to be explored and then remembered for a retention interval of 5 min. The retention interval was interrupted by unpleasant sounds from The International Affective Digitized Sounds and short sound-free periods. During the experiment a video stream of behavior, 19-channel EEG, and EMG (of forearm muscles) were recorded. Comparisons of the behavioral data and spectral power of different EEG frequency bands (theta, alpha, beta, and gamma) were conducted. An increase of sFSTG during the application of unpleasant sounds was observed. A significant increase of spectral theta and beta power was observed after exploration of the stimuli as well as after sFSTG in centro-parietal electrodes. The spectral theta power extremely decreased just before sFSTG during the retention interval. Contrary to this, no significant changes were detected in any of the frequencies when the spectral power before and after instructed facial self-touch movements (b-iFSTG and a-iFSTG) were compared. The changes of spectral theta power in the intervals before and after sFSTG in centro-parietal electrodes imply that sFSTG are associated with cortical regulatory processes in the domains of working memory and emotions.
Affiliations:
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type="city">Leipzig</settlement></placeName></affiliation></author><author><name sortKey="Weiss, Thomas" sort="Weiss, Thomas" uniqKey="Weiss T" first="Thomas" last="Weiss">Thomas Weiss</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Friedrich-Schiller-Uniuersity of Jena, Department Biological & Clinical Psychology</s1><s2>07743 Jena</s2><s3>DEU</s3><sZ>2 aut.</sZ></inist:fA14><country>Allemagne</country><wicri:noRegion>07743 Jena</wicri:noRegion><wicri:noRegion>Department Biological & Clinical Psychology</wicri:noRegion><wicri:noRegion>07743 Jena</wicri:noRegion></affiliation></author><author><name sortKey="Mueller, Stephanie" sort="Mueller, Stephanie" uniqKey="Mueller S" first="Stephanie" last="Mueller">Stephanie Mueller</name><affiliation wicri:level="3"><inist:fA14 i1="01"><s1>University of Leipzig, Paul-Flechsig-Institute for Brain Research, Haptic Research Lab</s1><s2>04103 Leipzig</s2><s3>DEU</s3><sZ>1 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ></inist:fA14><country>Allemagne</country><placeName><region type="land" nuts="1">Saxe (Land)</region><region type="district" nuts="2">District de Leipzig</region><settlement type="city">Leipzig</settlement></placeName></affiliation></author><author><name sortKey="Rall, Lysann" sort="Rall, Lysann" uniqKey="Rall L" first="Lysann" last="Rall">Lysann Rall</name><affiliation wicri:level="3"><inist:fA14 i1="01"><s1>University of Leipzig, Paul-Flechsig-Institute for Brain Research, Haptic Research Lab</s1><s2>04103 Leipzig</s2><s3>DEU</s3><sZ>1 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ></inist:fA14><country>Allemagne</country><placeName><region type="land" nuts="1">Saxe (Land)</region><region type="district" nuts="2">District de Leipzig</region><settlement type="city">Leipzig</settlement></placeName></affiliation></author></analytic><series><title level="j" type="main">Brain research</title><title level="j" type="abbreviated">Brain res.</title><idno type="ISSN">0006-8993</idno><imprint><date when="2014">2014</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Brain research</title><title level="j" type="abbreviated">Brain res.</title><idno type="ISSN">0006-8993</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Cognition</term><term>Electroencephalography</term><term>Emotion emotionality</term><term>Self</term><term>Tactile sensitivity</term><term>Working memory</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Electroencéphalographie</term><term>Soi</term><term>Sensibilité tactile</term><term>Emotion émotivité</term><term>Mémoire de travail</term><term>Cognition</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Spontaneous facial self-touch gestures (sFSTG) are performed manifold every day by every human being, primarily in stressful situations. These movements are not usually designed to communicate and are frequently accomplished with little or no awareness. The aim of the present study was to investigate whether sFSTG are associated with specific changes in the electrical brain activity that might indicate an involvement of regulatory emotional processes and working memory. Fourteen subjects performed a delayed memory task of complex haptic stimuli. The stimuli had to be explored and then remembered for a retention interval of 5 min. The retention interval was interrupted by unpleasant sounds from The International Affective Digitized Sounds and short sound-free periods. During the experiment a video stream of behavior, 19-channel EEG, and EMG (of forearm muscles) were recorded. Comparisons of the behavioral data and spectral power of different EEG frequency bands (theta, alpha, beta, and gamma) were conducted. An increase of sFSTG during the application of unpleasant sounds was observed. A significant increase of spectral theta and beta power was observed after exploration of the stimuli as well as after sFSTG in centro-parietal electrodes. The spectral theta power extremely decreased just before sFSTG during the retention interval. Contrary to this, no significant changes were detected in any of the frequencies when the spectral power before and after instructed facial self-touch movements (b-iFSTG and a-iFSTG) were compared. The changes of spectral theta power in the intervals before and after sFSTG in centro-parietal electrodes imply that sFSTG are associated with cortical regulatory processes in the domains of working memory and emotions.</div></front></TEI><affiliations><list><country><li>Allemagne</li></country><region><li>District de Leipzig</li><li>Saxe (Land)</li></region><settlement><li>Leipzig</li></settlement></list><tree><country name="Allemagne"><region name="Saxe (Land)"><name sortKey="Grunwald, Martin" sort="Grunwald, Martin" uniqKey="Grunwald M" first="Martin" last="Grunwald">Martin Grunwald</name></region><name sortKey="Mueller, Stephanie" sort="Mueller, Stephanie" uniqKey="Mueller S" first="Stephanie" last="Mueller">Stephanie Mueller</name><name sortKey="Rall, Lysann" sort="Rall, Lysann" uniqKey="Rall L" first="Lysann" last="Rall">Lysann Rall</name><name sortKey="Weiss, Thomas" sort="Weiss, Thomas" uniqKey="Weiss T" first="Thomas" last="Weiss">Thomas Weiss</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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