Effects of interstimulus interval on cortical responses to painful laser stimulation.
Identifieur interne : 000701 ( PubMed/Corpus ); précédent : 000700; suivant : 000702Effects of interstimulus interval on cortical responses to painful laser stimulation.
Auteurs : Tuukka T. Raij ; Nuutti V. Vartiainen ; Veikko Jousm Ki ; Riitta HariSource :
- Journal of clinical neurophysiology : official publication of the American Electroencephalographic Society [ 0736-0258 ] ; 2003.
English descriptors
- KwdEn :
- MESH :
- methods : Brain Mapping, Electroencephalography, Magnetoencephalography.
- physiology : Hand.
- physiopathology : Pain.
- Adult, Evoked Potentials, Somatosensory, Female, Humans, Lasers, Male, Reaction Time, Skin Physiological Phenomena, Somatosensory Cortex.
Abstract
Short laser pulses applied to the skin are used increasingly in both clinical and basic assessment of nociceptive brain mechanisms. The authors aimed to characterize further the cortical responses to noxious laser stimuli and to define the interstimulus interval (ISI) for the optimum signal-to-noise ratio during a fixed measurement time. Three hundred six-channel whole-scalp magnetoencephalographic (MEG) and midline EEG signals were recorded from nine healthy adults during painful thulium laser stimulation. The stimuli were delivered on the dorsum of the left hand at ISIs of 0.5, 1, 2, 4, 8, and 16 seconds. The MEG responses peaked at 160 to 195 msec around the contralateral primary somatosensory (SI) cortex, at 150 to 190 msec in the contralateral secondary somatosensory (SII) cortex, and at 160 to 205 msec in the ipsilateral SII cortex. The simultaneously measured electrical vertex potentials peaked at 190 to 230 msec and 310 to 330 msec (N200-P300). All these responses showed rather similar refractory times: The amplitudes increased strongly from 0.5 to 4-second ISIs and thereafter saturated at ISIs of 8 to 16 seconds. On the basis of the time constants of the recovery cycles, the optimum ISI for obtaining the best signal-to-noise ratio for laser-evoked MEG and EEG responses during a fixed measurement interval is 4 to 5 seconds.
PubMed: 12684562
Links to Exploration step
pubmed:12684562Le document en format XML
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Vartiainen</name></author><author><name sortKey="Jousm Ki, Veikko" sort="Jousm Ki, Veikko" uniqKey="Jousm Ki V" first="Veikko" last="Jousm Ki">Veikko Jousm Ki</name></author><author><name sortKey="Hari, Riitta" sort="Hari, Riitta" uniqKey="Hari R" first="Riitta" last="Hari">Riitta Hari</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2003">2003</date><idno type="RBID">pubmed:12684562</idno><idno type="pmid">12684562</idno><idno type="wicri:Area/PubMed/Corpus">000701</idno><idno type="wicri:explorRef" wicri:stream="PubMed" wicri:step="Corpus" wicri:corpus="PubMed">000701</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Effects of interstimulus interval on cortical responses to painful laser stimulation.</title><author><name sortKey="Raij, Tuukka T" sort="Raij, Tuukka T" uniqKey="Raij T" first="Tuukka T" last="Raij">Tuukka T. Raij</name><affiliation><nlm:affiliation>Brain Research Unit, Low Temperature Laboratory, Helsinki University of Technology, Espoo, Finland.</nlm:affiliation></affiliation></author><author><name sortKey="Vartiainen, Nuutti V" sort="Vartiainen, Nuutti V" uniqKey="Vartiainen N" first="Nuutti V" last="Vartiainen">Nuutti V. Vartiainen</name></author><author><name sortKey="Jousm Ki, Veikko" sort="Jousm Ki, Veikko" uniqKey="Jousm Ki V" first="Veikko" last="Jousm Ki">Veikko Jousm Ki</name></author><author><name sortKey="Hari, Riitta" sort="Hari, Riitta" uniqKey="Hari R" first="Riitta" last="Hari">Riitta Hari</name></author></analytic><series><title level="j">Journal of clinical neurophysiology : official publication of the American Electroencephalographic Society</title><idno type="ISSN">0736-0258</idno><imprint><date when="2003" type="published">2003</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Adult</term><term>Brain Mapping (methods)</term><term>Electroencephalography (methods)</term><term>Evoked Potentials, Somatosensory</term><term>Female</term><term>Hand (physiology)</term><term>Humans</term><term>Lasers</term><term>Magnetoencephalography (methods)</term><term>Male</term><term>Pain (physiopathology)</term><term>Reaction Time</term><term>Skin Physiological Phenomena</term><term>Somatosensory Cortex</term></keywords><keywords scheme="MESH" qualifier="methods" xml:lang="en"><term>Brain Mapping</term><term>Electroencephalography</term><term>Magnetoencephalography</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Hand</term></keywords><keywords scheme="MESH" qualifier="physiopathology" xml:lang="en"><term>Pain</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Adult</term><term>Evoked Potentials, Somatosensory</term><term>Female</term><term>Humans</term><term>Lasers</term><term>Male</term><term>Reaction Time</term><term>Skin Physiological Phenomena</term><term>Somatosensory Cortex</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Short laser pulses applied to the skin are used increasingly in both clinical and basic assessment of nociceptive brain mechanisms. The authors aimed to characterize further the cortical responses to noxious laser stimuli and to define the interstimulus interval (ISI) for the optimum signal-to-noise ratio during a fixed measurement time. Three hundred six-channel whole-scalp magnetoencephalographic (MEG) and midline EEG signals were recorded from nine healthy adults during painful thulium laser stimulation. The stimuli were delivered on the dorsum of the left hand at ISIs of 0.5, 1, 2, 4, 8, and 16 seconds. The MEG responses peaked at 160 to 195 msec around the contralateral primary somatosensory (SI) cortex, at 150 to 190 msec in the contralateral secondary somatosensory (SII) cortex, and at 160 to 205 msec in the ipsilateral SII cortex. The simultaneously measured electrical vertex potentials peaked at 190 to 230 msec and 310 to 330 msec (N200-P300). All these responses showed rather similar refractory times: The amplitudes increased strongly from 0.5 to 4-second ISIs and thereafter saturated at ISIs of 8 to 16 seconds. On the basis of the time constants of the recovery cycles, the optimum ISI for obtaining the best signal-to-noise ratio for laser-evoked MEG and EEG responses during a fixed measurement interval is 4 to 5 seconds.</div></front></TEI><pubmed><MedlineCitation Owner="NLM" Status="MEDLINE"><PMID Version="1">12684562</PMID><DateCreated><Year>2003</Year><Month>04</Month><Day>09</Day></DateCreated><DateCompleted><Year>2003</Year><Month>05</Month><Day>21</Day></DateCompleted><DateRevised><Year>2015</Year><Month>11</Month><Day>19</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Print">0736-0258</ISSN><JournalIssue CitedMedium="Print"><Volume>20</Volume><Issue>1</Issue><PubDate><Year>2003</Year><Month>Feb</Month></PubDate></JournalIssue><Title>Journal of clinical neurophysiology : official publication of the American Electroencephalographic Society</Title><ISOAbbreviation>J Clin Neurophysiol</ISOAbbreviation></Journal><ArticleTitle>Effects of interstimulus interval on cortical responses to painful laser stimulation.</ArticleTitle><Pagination><MedlinePgn>73-9</MedlinePgn></Pagination><Abstract><AbstractText>Short laser pulses applied to the skin are used increasingly in both clinical and basic assessment of nociceptive brain mechanisms. The authors aimed to characterize further the cortical responses to noxious laser stimuli and to define the interstimulus interval (ISI) for the optimum signal-to-noise ratio during a fixed measurement time. Three hundred six-channel whole-scalp magnetoencephalographic (MEG) and midline EEG signals were recorded from nine healthy adults during painful thulium laser stimulation. The stimuli were delivered on the dorsum of the left hand at ISIs of 0.5, 1, 2, 4, 8, and 16 seconds. The MEG responses peaked at 160 to 195 msec around the contralateral primary somatosensory (SI) cortex, at 150 to 190 msec in the contralateral secondary somatosensory (SII) cortex, and at 160 to 205 msec in the ipsilateral SII cortex. The simultaneously measured electrical vertex potentials peaked at 190 to 230 msec and 310 to 330 msec (N200-P300). All these responses showed rather similar refractory times: The amplitudes increased strongly from 0.5 to 4-second ISIs and thereafter saturated at ISIs of 8 to 16 seconds. On the basis of the time constants of the recovery cycles, the optimum ISI for obtaining the best signal-to-noise ratio for laser-evoked MEG and EEG responses during a fixed measurement interval is 4 to 5 seconds.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Raij</LastName><ForeName>Tuukka T</ForeName><Initials>TT</Initials><AffiliationInfo><Affiliation>Brain Research Unit, Low Temperature Laboratory, Helsinki University of Technology, Espoo, Finland.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Vartiainen</LastName><ForeName>Nuutti V</ForeName><Initials>NV</Initials></Author><Author ValidYN="Y"><LastName>Jousmäki</LastName><ForeName>Veikko</ForeName><Initials>V</Initials></Author><Author ValidYN="Y"><LastName>Hari</LastName><ForeName>Riitta</ForeName><Initials>R</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016430">Clinical Trial</PublicationType><PublicationType UI="D016428">Journal Article</PublicationType><PublicationType UI="D013485">Research Support, Non-U.S. Gov't</PublicationType></PublicationTypeList></Article><MedlineJournalInfo><Country>United States</Country><MedlineTA>J Clin Neurophysiol</MedlineTA><NlmUniqueID>8506708</NlmUniqueID><ISSNLinking>0736-0258</ISSNLinking></MedlineJournalInfo><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName MajorTopicYN="N" UI="D000328">Adult</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D001931">Brain Mapping</DescriptorName><QualifierName MajorTopicYN="N" UI="Q000379">methods</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D004569">Electroencephalography</DescriptorName><QualifierName MajorTopicYN="N" UI="Q000379">methods</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="Y" UI="D005073">Evoked Potentials, Somatosensory</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D005260">Female</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D006225">Hand</DescriptorName><QualifierName MajorTopicYN="N" UI="Q000502">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D006801">Humans</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="Y" UI="D007834">Lasers</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D015225">Magnetoencephalography</DescriptorName><QualifierName MajorTopicYN="N" UI="Q000379">methods</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D008297">Male</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D010146">Pain</DescriptorName><QualifierName MajorTopicYN="Y" UI="Q000503">physiopathology</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="Y" UI="D011930">Reaction Time</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="Y" UI="D012879">Skin Physiological Phenomena</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="Y" UI="D013003">Somatosensory Cortex</DescriptorName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="pubmed"><Year>2003</Year><Month>4</Month><Day>10</Day><Hour>5</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2003</Year><Month>5</Month><Day>22</Day><Hour>5</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2003</Year><Month>4</Month><Day>10</Day><Hour>5</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">12684562</ArticleId></ArticleIdList></PubmedData></pubmed></record>Pour manipuler ce document sous Unix (Dilib)
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