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<meta name="DC.Title" content="Reproducibility of Activations in Broca Area with Two Language Tasks: A Functional MR Imaging Study" />
<meta name="DC.Identifier" content="10.3174/ajnr.A0581" />
<meta name="DC.Date" content="2007-08-01" />
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<meta name="DC.Description" content="BACKGROUND AND PURPOSE: Functional MR imaging (fMRI) is rapidly evolving and claims to complement or even substitute intraoperative mapping (IOM) of language functions. However, little is known about the reproducibility of imaging data in the language domain. The aim of our study was to assess the reproducibility of activations for 2 widely used paradigms: naming and word generation. Individual analysis was focused on the Broca area and the left insula.

MATERIALS AND METHODS: We examined 13 healthy right-handed subjects in 3 sessions with fMRI. Two conditions were assessed: overt naming and overt naming plus noun generation. The same stimuli were used in all of the sessions. A random-effects analysis was performed to analyze whole-brain activation on a group level. For the regions of interest, the number of voxels classified as active were counted for each subject, and individual reproducibility coefficients were calculated over sessions.

RESULTS: For the naming condition, the random-effects analysis did not reveal significant activations in the specified regions; small individual activations were not reproducible. For the combined task, all of the subjects showed activations in the Broca area that were more extensive and reproducible than in the naming task. Activations in the insula were only poorly reproducible.

CONCLUSION: Naming is an approved task in IOM but does not identify the Broca area with fMRI in a reproducible way. Priming may have affected our results, but the use of a combined task, in which naming is paired with noun generation, improves the reproducibility of activations and is also suitable for IOM." />
<meta name="DC.Contributor" content="S. Rau" />
<meta name="DC.Contributor" content="G. Fesl" />
<meta name="DC.Contributor" content="P. Bruhns" />
<meta name="DC.Contributor" content="P. Havel" />
<meta name="DC.Contributor" content="B. Braun" />
<meta name="DC.Contributor" content="J.-C. Tonn" />
<meta name="DC.Contributor" content="J. Ilmberger" />
<meta name="article:published_time" content="2007-08-01" />
<meta name="article:section" content="FUNCTIONAL" />
<meta name="citation_title" content="Reproducibility of Activations in Broca Area with Two Language Tasks: A Functional MR Imaging Study" />
<meta name="citation_abstract" lang="en" content="&lt;p&gt;&lt;b&gt;BACKGROUND AND PURPOSE:&lt;/b&gt; Functional MR imaging (fMRI) is rapidly evolving and claims to complement or even substitute intraoperative mapping (IOM) of language functions. However, little is known about the reproducibility of imaging data in the language domain. The aim of our study was to assess the reproducibility of activations for 2 widely used paradigms: naming and word generation. Individual analysis was focused on the Broca area and the left insula.&lt;/p&gt;&lt;p&gt;&lt;b&gt;MATERIALS AND METHODS:&lt;/b&gt; We examined 13 healthy right-handed subjects in 3 sessions with fMRI. Two conditions were assessed: overt naming and overt naming plus noun generation. The same stimuli were used in all of the sessions. A random-effects analysis was performed to analyze whole-brain activation on a group level. For the regions of interest, the number of voxels classified as active were counted for each subject, and individual reproducibility coefficients were calculated over sessions.&lt;/p&gt;&lt;p&gt;&lt;b&gt;RESULTS:&lt;/b&gt; For the naming condition, the random-effects analysis did not reveal significant activations in the specified regions; small individual activations were not reproducible. For the combined task, all of the subjects showed activations in the Broca area that were more extensive and reproducible than in the naming task. Activations in the insula were only poorly reproducible.&lt;/p&gt;&lt;p&gt;&lt;b&gt;CONCLUSION:&lt;/b&gt; Naming is an approved task in IOM but does not identify the Broca area with fMRI in a reproducible way. Priming may have affected our results, but the use of a combined task, in which naming is paired with noun generation, improves the reproducibility of activations and is also suitable for IOM.&lt;/p&gt;" />
<meta name="citation_journal_title" content="American Journal of Neuroradiology" />
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<meta name="citation_publication_date" content="2007/08/01" />
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<meta name="citation_section" content="FUNCTIONAL" />
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<meta name="citation_author" content="S. Rau" />
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<meta name="citation_author" content="P. Bruhns" />
<meta name="citation_author" content="P. Havel" />
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<meta name="citation_author" content="J.-C. Tonn" />
<meta name="citation_author" content="J. Ilmberger" />
<meta name="twitter:title" content="Reproducibility of Activations in Broca Area with Two Language Tasks: A Functional MR Imaging Study" />
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<meta name="twitter:description" content="BACKGROUND AND PURPOSE: Functional MR imaging (fMRI) is rapidly evolving and claims to complement or even substitute intraoperative mapping (IOM) of language functions. However, little is known about the reproducibility of imaging data in the language domain. The aim of our study was to assess the reproducibility of activations for 2 widely used paradigms: naming and word generation. Individual analysis was focused on the Broca area and the left insula.

MATERIALS AND METHODS: We examined 13 healthy right-handed subjects in 3 sessions with fMRI. Two conditions were assessed: overt naming and overt naming plus noun generation. The same stimuli were used in all of the sessions. A random-effects analysis was performed to analyze whole-brain activation on a group level. For the regions of interest, the number of voxels classified as active were counted for each subject, and individual reproducibility coefficients were calculated over sessions.

RESULTS: For the naming condition, the random-effects analysis did not reveal significant activations in the specified regions; small individual activations were not reproducible. For the combined task, all of the subjects showed activations in the Broca area that were more extensive and reproducible than in the naming task. Activations in the insula were only poorly reproducible.

CONCLUSION: Naming is an approved task in IOM but does not identify the Broca area with fMRI in a reproducible way. Priming may have affected our results, but the use of a combined task, in which naming is paired with noun generation, improves the reproducibility of activations and is also suitable for IOM." />
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<meta name="og-description" property="og:description" content="BACKGROUND AND PURPOSE: Functional MR imaging (fMRI) is rapidly evolving and claims to complement or even substitute intraoperative mapping (IOM) of language functions. However, little is known about the reproducibility of imaging data in the language domain. The aim of our study was to assess the reproducibility of activations for 2 widely used paradigms: naming and word generation. Individual analysis was focused on the Broca area and the left insula.

MATERIALS AND METHODS: We examined 13 healthy right-handed subjects in 3 sessions with fMRI. Two conditions were assessed: overt naming and overt naming plus noun generation. The same stimuli were used in all of the sessions. A random-effects analysis was performed to analyze whole-brain activation on a group level. For the regions of interest, the number of voxels classified as active were counted for each subject, and individual reproducibility coefficients were calculated over sessions.

RESULTS: For the naming condition, the random-effects analysis did not reveal significant activations in the specified regions; small individual activations were not reproducible. For the combined task, all of the subjects showed activations in the Broca area that were more extensive and reproducible than in the naming task. Activations in the insula were only poorly reproducible.

CONCLUSION: Naming is an approved task in IOM but does not identify the Broca area with fMRI in a reproducible way. Priming may have affected our results, but the use of a combined task, in which naming is paired with noun generation, improves the reproducibility of activations and is also suitable for IOM." />
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      <h1 class="highwire-cite-title" id="page-title">Reproducibility of Activations in Broca Area with Two Language Tasks: A Functional MR Imaging Study</h1>  
    	<div class="highwire-cite-authors"><span  class="highwire-citation-authors"><span class="highwire-citation-author first" data-delta="0">S. Rau</span>, <span class="highwire-citation-author" data-delta="1">G. Fesl</span>, <span class="highwire-citation-author" data-delta="2">P. Bruhns</span>, <span class="highwire-citation-author" data-delta="3">P. Havel</span>, <span class="highwire-citation-author" data-delta="4">B. Braun</span>, <span class="highwire-citation-author" data-delta="5">J.-C. Tonn</span> and <span class="highwire-citation-author" data-delta="6">J. Ilmberger</span></span></div>
  
    	<div class="highwire-cite-metadata"><span  class="highwire-cite-metadata-journal highwire-cite-metadata">American Journal of Neuroradiology </span><span  class="highwire-cite-metadata-date highwire-cite-metadata">August 2007,  </span><span  class="highwire-cite-metadata-volume highwire-cite-metadata">28 </span><span  class="highwire-cite-metadata-issue highwire-cite-metadata">(7) </span><span  class="highwire-cite-metadata-pages highwire-cite-metadata">1346-1353; </span><span  class="highwire-cite-metadata-doi highwire-cite-metadata">DOI: https://doi.org/10.3174/ajnr.A0581 </span></div>
  
  
  
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<div id="hw-article-author-popups-top-node-7049--6976284541" style="display: none;"><div class="author-tooltip-0"><div class="author-tooltip-name">S. Rau </div><ul class="author-tooltip-find-more"><li class="author-tooltip-gs-link first"><a href="/lookup/google-scholar?link_type=googlescholar&amp;gs_type=author&amp;author%5B0%5D=S.%2BRau%2B" target="_blank" class="" data-icon-position="" data-hide-link-title="0">Find this author on Google Scholar</a></li><li class="author-tooltip-pubmed-link"><a href="/lookup/external-ref?access_num=Rau%20S&amp;link_type=AUTHORSEARCH" target="_blank" class="" data-icon-position="" data-hide-link-title="0">Find this author on PubMed</a></li><li class="author-site-search-link last"><a href="/search/author1%3AS.%2BRau%2B" rel="nofollow" class="" data-icon-position="" data-hide-link-title="0">Search for this author on this site</a></li></ul></div><div class="author-tooltip-1"><div class="author-tooltip-name">G. 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        	<div class="highwire-cite-metadata"><span  class="highwire-cite-metadata-volume highwire-cite-metadata">Vol. 28</span>, <span  class="highwire-cite-metadata-issue highwire-cite-metadata">Issue 7 </span><div  class="highwire-cite-metadata-pubdate highwire-cite-metadata">August 2007 </div></div>
      
      
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      <div class="highwire-cite-title">Reproducibility of Activations in Broca Area with Two Language Tasks: A Functional MR Imaging Study</div>  
    	<div class="highwire-cite-authors"><span  class="highwire-citation-authors"><span class="highwire-citation-author first" data-delta="0"><span class="nlm-given-names">S.</span> <span class="nlm-surname">Rau</span></span>, <span class="highwire-citation-author" data-delta="1"><span class="nlm-given-names">G.</span> <span class="nlm-surname">Fesl</span></span>, <span class="highwire-citation-author" data-delta="2"><span class="nlm-given-names">P.</span> <span class="nlm-surname">Bruhns</span></span>, <span class="highwire-citation-author" data-delta="3"><span class="nlm-given-names">P.</span> <span class="nlm-surname">Havel</span></span>, <span class="highwire-citation-author" data-delta="4"><span class="nlm-given-names">B.</span> <span class="nlm-surname">Braun</span></span>, <span class="highwire-citation-author" data-delta="5"><span class="nlm-given-names">J.-C.</span> <span class="nlm-surname">Tonn</span></span>, <span class="highwire-citation-author" data-delta="6"><span class="nlm-given-names">J.</span> <span class="nlm-surname">Ilmberger</span></span></span></div>
  
    	<div class="highwire-cite-metadata"><span  class="highwire-cite-metadata-journal highwire-cite-metadata">American Journal of Neuroradiology </span><span  class="highwire-cite-metadata-date highwire-cite-metadata">Aug 2007, </span><span  class="highwire-cite-metadata-volume highwire-cite-metadata">28 </span><span  class="highwire-cite-metadata-issue highwire-cite-metadata">(7) </span><span  class="highwire-cite-metadata-pages highwire-cite-metadata">1346-1353; </span><span  class="highwire-cite-metadata-doi highwire-cite-metadata"><span class="label">DOI:</span> 10.3174/ajnr.A0581 </span></div>
  
  
  
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      <div class="highwire-cite-title">Reproducibility of Activations in Broca Area with Two Language Tasks: A Functional MR Imaging Study</div>  
    	<div class="highwire-cite-authors"><span  class="highwire-citation-authors"><span class="highwire-citation-author first" data-delta="0"><span class="nlm-given-names">S.</span> <span class="nlm-surname">Rau</span></span>, <span class="highwire-citation-author" data-delta="1"><span class="nlm-given-names">G.</span> <span class="nlm-surname">Fesl</span></span>, <span class="highwire-citation-author" data-delta="2"><span class="nlm-given-names">P.</span> <span class="nlm-surname">Bruhns</span></span>, <span class="highwire-citation-author" data-delta="3"><span class="nlm-given-names">P.</span> <span class="nlm-surname">Havel</span></span>, <span class="highwire-citation-author" data-delta="4"><span class="nlm-given-names">B.</span> <span class="nlm-surname">Braun</span></span>, <span class="highwire-citation-author" data-delta="5"><span class="nlm-given-names">J.-C.</span> <span class="nlm-surname">Tonn</span></span>, <span class="highwire-citation-author" data-delta="6"><span class="nlm-given-names">J.</span> <span class="nlm-surname">Ilmberger</span></span></span></div>
  
    	<div class="highwire-cite-metadata"><span  class="highwire-cite-metadata-journal highwire-cite-metadata">American Journal of Neuroradiology </span><span  class="highwire-cite-metadata-date highwire-cite-metadata">Aug 2007, </span><span  class="highwire-cite-metadata-volume highwire-cite-metadata">28 </span><span  class="highwire-cite-metadata-issue highwire-cite-metadata">(7) </span><span  class="highwire-cite-metadata-pages highwire-cite-metadata">1346-1353; </span><span  class="highwire-cite-metadata-doi highwire-cite-metadata"><span class="label">DOI:</span> 10.3174/ajnr.A0581 </span></div>
  
  
  
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