Cortical Activity at Rest Predicts Cochlear Implantation Outcome
Identifieur interne : 002676 ( Istex/Corpus ); précédent : 002675; suivant : 002677Cortical Activity at Rest Predicts Cochlear Implantation Outcome
Auteurs : Hyo-Jeong Lee ; Anne-Lise Giraud ; Eunjoo Kang ; Seung-Ha Oh ; Hyejin Kang ; Chong-Sun Kim ; Dong Soo LeeSource :
- Cerebral Cortex [ 1047-3211 ] ; 2006-05-26.
Abstract
The functional status of central neural pathways, in particular their susceptibility to plasticity and functional reorganization, may influence speech performance of deaf cochlear implant users. In this paper, we sought to determine how brain metabolic activity measured before implantation relates to cochlear implantation outcome, that is, speech perception. In 22 prelingually deaf children between 1 and 11 years, we correlated preoperative glucose metabolism as measured by F-18 fluorodeoxyglucose positron emission tomography with individual speech perception performance assessed 3 years after implantation, while factoring out the confounding effect of age at implantation. Whereas age at implantation was positively correlated with increased activity in the right superior temporal gyrus, speech scores were selectively associated with enhanced metabolic activity in the left prefrontal cortex and decreased metabolic activity in right Heschl's gyrus and in the posterior superior temporal sulcus. These results reinforce the notion that implantation should be performed as early as possible to prevent cross-modal takeover of auditory regions and suggest that rehabilitation strategies may be more efficient if they capitalize on general cognitive functions instead of only targeting specialized circuits dedicated to auditory and audiovisual pattern recognition.
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DOI: 10.1093/cercor/bhl001
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<front><div type="abstract">The functional status of central neural pathways, in particular their susceptibility to plasticity and functional reorganization, may influence speech performance of deaf cochlear implant users. In this paper, we sought to determine how brain metabolic activity measured before implantation relates to cochlear implantation outcome, that is, speech perception. In 22 prelingually deaf children between 1 and 11 years, we correlated preoperative glucose metabolism as measured by F-18 fluorodeoxyglucose positron emission tomography with individual speech perception performance assessed 3 years after implantation, while factoring out the confounding effect of age at implantation. Whereas age at implantation was positively correlated with increased activity in the right superior temporal gyrus, speech scores were selectively associated with enhanced metabolic activity in the left prefrontal cortex and decreased metabolic activity in right Heschl's gyrus and in the posterior superior temporal sulcus. These results reinforce the notion that implantation should be performed as early as possible to prevent cross-modal takeover of auditory regions and suggest that rehabilitation strategies may be more efficient if they capitalize on general cognitive functions instead of only targeting specialized circuits dedicated to auditory and audiovisual pattern recognition.</div>
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Department of Otolaryngology, Seoul National University College of Medicine, Seoul, Korea</aff>
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Inserm U742 ANiM, Université Pierre et Marie Curie (UPMC—Paris 6), Paris, France</aff>
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Department of Psychology, Kangwon National University, Chunchon, Korea</aff>
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Department of Nuclear Medicine, Seoul National University College of Medicine, Seoul, Korea</aff>
<author-notes><corresp>Address correspondence to Seung-Ha Oh, 28 Yongon-dong, Chongro-gu, Department of Otolaryngology, Seoul National University College of Medicine, Seoul 110-744, Korea. Email: <email>shaoh@snu.ac.kr</email>
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<abstract><p>The functional status of central neural pathways, in particular their susceptibility to plasticity and functional reorganization, may influence speech performance of deaf cochlear implant users. In this paper, we sought to determine how brain metabolic activity measured before implantation relates to cochlear implantation outcome, that is, speech perception. In 22 prelingually deaf children between 1 and 11 years, we correlated preoperative glucose metabolism as measured by F-18 fluorodeoxyglucose positron emission tomography with individual speech perception performance assessed 3 years after implantation, while factoring out the confounding effect of age at implantation. Whereas age at implantation was positively correlated with increased activity in the right superior temporal gyrus, speech scores were selectively associated with enhanced metabolic activity in the left prefrontal cortex and decreased metabolic activity in right Heschl's gyrus and in the posterior superior temporal sulcus. These results reinforce the notion that implantation should be performed as early as possible to prevent cross-modal takeover of auditory regions and suggest that rehabilitation strategies may be more efficient if they capitalize on general cognitive functions instead of only targeting specialized circuits dedicated to auditory and audiovisual pattern recognition.</p>
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<name type="personal"><namePart type="given">Eunjoo</namePart>
<namePart type="family">Kang</namePart>
<affiliation>Department of Psychology, Kangwon National University, Chunchon, Korea</affiliation>
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<name type="personal" displayLabel="corresp"><namePart type="given">Seung-Ha</namePart>
<namePart type="family">Oh</namePart>
<affiliation>Department of Otolaryngology, Seoul National University College of Medicine, Seoul, Korea</affiliation>
<affiliation>E-mail: shaoh@snu.ac.kr</affiliation>
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<name type="personal"><namePart type="given">Hyejin</namePart>
<namePart type="family">Kang</namePart>
<affiliation>Department of Nuclear Medicine, Seoul National University College of Medicine, Seoul, Korea</affiliation>
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<name type="personal"><namePart type="given">Chong-Sun</namePart>
<namePart type="family">Kim</namePart>
<affiliation>Department of Otolaryngology, Seoul National University College of Medicine, Seoul, Korea</affiliation>
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<name type="personal"><namePart type="given">Dong Soo</namePart>
<namePart type="family">Lee</namePart>
<affiliation>Department of Nuclear Medicine, Seoul National University College of Medicine, Seoul, Korea</affiliation>
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<dateIssued encoding="w3cdtf">2006-05-26</dateIssued>
<dateCreated encoding="w3cdtf">2006-05-26</dateCreated>
<copyrightDate encoding="w3cdtf">2007</copyrightDate>
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<abstract>The functional status of central neural pathways, in particular their susceptibility to plasticity and functional reorganization, may influence speech performance of deaf cochlear implant users. In this paper, we sought to determine how brain metabolic activity measured before implantation relates to cochlear implantation outcome, that is, speech perception. In 22 prelingually deaf children between 1 and 11 years, we correlated preoperative glucose metabolism as measured by F-18 fluorodeoxyglucose positron emission tomography with individual speech perception performance assessed 3 years after implantation, while factoring out the confounding effect of age at implantation. Whereas age at implantation was positively correlated with increased activity in the right superior temporal gyrus, speech scores were selectively associated with enhanced metabolic activity in the left prefrontal cortex and decreased metabolic activity in right Heschl's gyrus and in the posterior superior temporal sulcus. These results reinforce the notion that implantation should be performed as early as possible to prevent cross-modal takeover of auditory regions and suggest that rehabilitation strategies may be more efficient if they capitalize on general cognitive functions instead of only targeting specialized circuits dedicated to auditory and audiovisual pattern recognition.</abstract>
<subject><genre>Keywords</genre>
<topic>cochlear implants</topic>
<topic>deafness</topic>
<topic>positron emission tomography</topic>
<topic>speech perception</topic>
</subject>
<relatedItem type="host"><titleInfo><title>Cerebral Cortex</title>
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<genre type="Journal">journal</genre>
<identifier type="ISSN">1047-3211</identifier>
<identifier type="eISSN">1460-2199</identifier>
<identifier type="PublisherID">cercor</identifier>
<identifier type="PublisherID-hwp">cercor</identifier>
<part><date>2006</date>
<detail type="volume"><caption>vol.</caption>
<number>17</number>
</detail>
<detail type="issue"><caption>no.</caption>
<number>4</number>
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<extent unit="pages"><start>909</start>
<end>917</end>
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<identifier type="DOI">10.1093/cercor/bhl001</identifier>
<accessCondition type="use and reproduction" contentType="copyright">The Author 2006. Published by Oxford University Press. All rights reserved. For permissions, please e-mail: journals.permissions@oxfordjournals.org</accessCondition>
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