Fronto-parietal regulation of media violence exposure in adolescents: a multi-method study
Identifieur interne : 001572 ( Pmc/Curation ); précédent : 001571; suivant : 001573Fronto-parietal regulation of media violence exposure in adolescents: a multi-method study
Auteurs : Maren Strenziok [États-Unis, Allemagne] ; Frank Krueger [États-Unis] ; Gopikrishna Deshpande [États-Unis] ; Rhoshel K. Lenroot [États-Unis] ; Elke Van Der Meer [Allemagne] ; Jordan Grafman [États-Unis]Source :
- Social Cognitive and Affective Neuroscience [ 1749-5016 ] ; 2010.
Abstract
Adolescents spend a significant part of their leisure time watching TV programs and movies that portray violence. It is unknown, however, how the extent of violent media use and the severity of aggression displayed affect adolescents’ brain function. We investigated skin conductance responses, brain activation and functional brain connectivity to media violence in healthy adolescents. In an event-related functional magnetic resonance imaging experiment, subjects repeatedly viewed normed videos that displayed different degrees of aggressive behavior. We found a downward linear adaptation in skin conductance responses with increasing aggression and desensitization towards more aggressive videos. Our results further revealed adaptation in a fronto-parietal network including the left lateral orbitofrontal cortex (lOFC), right precuneus and bilateral inferior parietal lobules, again showing downward linear adaptations and desensitization towards more aggressive videos. Granger causality mapping analyses revealed attenuation in the left lOFC, indicating that activation during viewing aggressive media is driven by input from parietal regions that decreased over time, for more aggressive videos. We conclude that aggressive media activates an emotion–attention network that has the capability to blunt emotional responses through reduced attention with repeated viewing of aggressive media contents, which may restrict the linking of the consequences of aggression with an emotional response, and therefore potentially promotes aggressive attitudes and behavior.
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DOI: 10.1093/scan/nsq079
PubMed: 20934985
PubMed Central: 3190206
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It is unknown, however, how the extent of violent media use and the severity of aggression displayed affect adolescents’ brain function. We investigated skin conductance responses, brain activation and functional brain connectivity to media violence in healthy adolescents. In an event-related functional magnetic resonance imaging experiment, subjects repeatedly viewed normed videos that displayed different degrees of aggressive behavior. We found a downward linear adaptation in skin conductance responses with increasing aggression and desensitization towards more aggressive videos. Our results further revealed adaptation in a fronto-parietal network including the left lateral orbitofrontal cortex (lOFC), right precuneus and bilateral inferior parietal lobules, again showing downward linear adaptations and desensitization towards more aggressive videos. Granger causality mapping analyses revealed attenuation in the left lOFC, indicating that activation during viewing aggressive media is driven by input from parietal regions that decreased over time, for more aggressive videos. We conclude that aggressive media activates an emotion–attention network that has the capability to blunt emotional responses through reduced attention with repeated viewing of aggressive media contents, which may restrict the linking of the consequences of aggression with an emotional response, and therefore potentially promotes aggressive attitudes and behavior.</p></div></front></TEI><pmc article-type="research-article"><pmc-comment>The publisher of this article does not allow downloading of the full text in XML form.</pmc-comment>
<front><journal-meta><journal-id journal-id-type="nlm-ta">Soc Cogn Affect Neurosci</journal-id><journal-id journal-id-type="publisher-id">scan</journal-id><journal-id journal-id-type="hwp">scan</journal-id><journal-title-group><journal-title>Social Cognitive and Affective Neuroscience</journal-title></journal-title-group><issn pub-type="ppub">1749-5016</issn><issn pub-type="epub">1749-5024</issn><publisher><publisher-name>Oxford University Press</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="pmid">20934985</article-id><article-id pub-id-type="pmc">3190206</article-id><article-id pub-id-type="doi">10.1093/scan/nsq079</article-id><article-id pub-id-type="publisher-id">nsq079</article-id><article-categories><subj-group subj-group-type="heading"><subject>Original Articles</subject></subj-group></article-categories><title-group><article-title>Fronto-parietal regulation of media violence exposure in adolescents: a multi-method study</article-title></title-group><contrib-group><contrib contrib-type="author"><name><surname>Strenziok</surname><given-names>Maren</given-names></name><xref ref-type="aff" rid="AFF1"><sup>1</sup></xref><xref ref-type="aff" rid="AFF1"><sup>2</sup></xref><xref ref-type="author-notes" rid="FN1">*</xref></contrib><contrib contrib-type="author"><name><surname>Krueger</surname><given-names>Frank</given-names></name><xref ref-type="aff" rid="AFF1"><sup>1</sup></xref><xref ref-type="aff" rid="AFF1"><sup>3</sup></xref><xref ref-type="author-notes" rid="FN1">*</xref></contrib><contrib contrib-type="author"><name><surname>Deshpande</surname><given-names>Gopikrishna</given-names></name><xref ref-type="aff" rid="AFF1"><sup>4</sup></xref></contrib><contrib contrib-type="author"><name><surname>Lenroot</surname><given-names>Rhoshel K.</given-names></name><xref ref-type="aff" rid="AFF1"><sup>5</sup></xref></contrib><contrib contrib-type="author"><name><surname>van der Meer</surname><given-names>Elke</given-names></name><xref ref-type="aff" rid="AFF1"><sup>2</sup></xref></contrib><contrib contrib-type="author" corresp="yes"><name><surname>Grafman</surname><given-names>Jordan</given-names></name><xref ref-type="aff" rid="AFF1"><sup>1</sup></xref></contrib></contrib-group><aff id="AFF1"><sup>1</sup>National Institute of Neurological Disorders and Stroke, National Institutes of Health, 10 Center Drive, Bethesda, MD 20892, USA,<sup>2</sup>Department of Cognitive Psychology, Humboldt University, Berlin, Rudower Chaussee 18, 12489 Berlin, Germany,<sup>3</sup>Department of Molecular Neuroscience, George Mason University, 4400 University Drive, Fairfax, VA 22030, USA,<sup>4</sup>Department of Biomedical Engineering, Emory University and Georgia Institute of Technology, 313 Ferst Drive, Atlanta, GA 30332, USA, and<sup>5</sup>National Institute of Mental Health, National Institutes of Health, 10 Center Drive, Bethesda, MD 20892, USA</aff><author-notes><corresp>Correspondence should be addressed to Jordan Grafman, Cognitive Neuroscience Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, 10 Center Drive, Building 10, Room 7D43, Bethesda, MD 20892, MSC1440, USA. E-mail: <email>grafmanj@ninds.nih.gov</email></corresp><fn id="FN1"><p>*These authors contributed equally to this work.</p></fn></author-notes><pub-date pub-type="ppub"><month>10</month><year>2011</year></pub-date><pub-date pub-type="epub"><day>7</day><month>10</month><year>2010</year></pub-date><pub-date pub-type="pmc-release"><day>1</day><month>10</month><year>2012</year></pub-date><pmc-comment> PMC Release delay is 12 months and 0 days and was based on the
<volume>6</volume><issue>5</issue><fpage>537</fpage><lpage>547</lpage><history><date date-type="received"><day>9</day><month>9</month><year>2009</year></date><date date-type="accepted"><day>6</day><month>8</month><year>2010</year></date></history><permissions><copyright-statement>Published by Oxford University Press 2010. For Permissions, please email: journals.permissions@oup.com</copyright-statement><copyright-year>2010</copyright-year></permissions><abstract><p>Adolescents spend a significant part of their leisure time watching TV programs and movies that portray violence. It is unknown, however, how the extent of violent media use and the severity of aggression displayed affect adolescents’ brain function. We investigated skin conductance responses, brain activation and functional brain connectivity to media violence in healthy adolescents. In an event-related functional magnetic resonance imaging experiment, subjects repeatedly viewed normed videos that displayed different degrees of aggressive behavior. We found a downward linear adaptation in skin conductance responses with increasing aggression and desensitization towards more aggressive videos. Our results further revealed adaptation in a fronto-parietal network including the left lateral orbitofrontal cortex (lOFC), right precuneus and bilateral inferior parietal lobules, again showing downward linear adaptations and desensitization towards more aggressive videos. Granger causality mapping analyses revealed attenuation in the left lOFC, indicating that activation during viewing aggressive media is driven by input from parietal regions that decreased over time, for more aggressive videos. We conclude that aggressive media activates an emotion–attention network that has the capability to blunt emotional responses through reduced attention with repeated viewing of aggressive media contents, which may restrict the linking of the consequences of aggression with an emotional response, and therefore potentially promotes aggressive attitudes and behavior.</p></abstract><kwd-group><kwd>aggression</kwd><kwd>violence</kwd><kwd>functional magnetic resonance imaging</kwd><kwd>skin conductance response</kwd><kwd>Granger causality mapping</kwd></kwd-group><counts><page-count count="11"></page-count></counts></article-meta></front></pmc></record>Pour manipuler ce document sous Unix (Dilib)
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