The impact of light fingertip touch on haptic cortical processing during a standing balance task.
Identifieur interne : 002947 ( Main/Merge ); précédent : 002946; suivant : 002948The impact of light fingertip touch on haptic cortical processing during a standing balance task.
Auteurs : David A E. Bolton [Canada] ; William E. Mcilroy ; W Richard Staines ; W. Richard StainesSource :
- Experimental brain research [ 1432-1106 ] ; 2011.
English descriptors
- KwdEn :
- MESH :
- methods : Electroencephalography, Electromyography.
- physiology : Evoked Potentials, Somatosensory, Fingers, Postural Balance, Psychomotor Performance, Sensory Deprivation, Touch.
- Adult, Humans, Young Adult.
Abstract
Availability of fingertip touch onto a stable surface reduces body sway for subjects standing with eyes closed. This is largely associated with sensory feedback from the fingertip when mechanical load is limited. Here, it is possible that the central nervous system facilitates cortical sensory processing to augment feedback to control upright stance. To test this, we compared cortical sensory excitability between tasks with and without light finger touch while standing. Subjects stood in tandem on a force plate with eyes closed while lightly touching a stable surface with the index finger. This was, in two different studies, compared to: (1) no haptic contact or (2) light touch on an object not referenced to balance. Throughout testing, the median nerve was stimulated and electroencephalography was used to measure somatosensory evoked potentials (SEPs). As expected, availability of stable light touch reduced medial-lateral COP sway. Peak amplitudes for SEP components revealed reduced P100 (48%), but increased P50 (31%), N140 (80%), and P200 (20%) during stable touch versus no touch. The modulation of P50 and N140 was no longer present when comparing stable to control (touch), which suggested that attending to touch on either surface, regardless of stability reference, accounted for these changes. Conversely, P200 was increased (19%) when touching the stable surface. Our data show SEP modulation during a standing balance task related to hand contact. Facilitation of P200 in particular may indicate task-specific regulation of the cortical representation of fingertip afferent input when it is relevant to providing stable cues for static balance control.
DOI: 10.1007/s00221-011-2728-6
PubMed: 21584624
Links toward previous steps (curation, corpus...)
- to stream PubMed, to step Corpus: 000E65
- to stream PubMed, to step Curation: 000E65
- to stream PubMed, to step Checkpoint: 000C48
- to stream Ncbi, to step Merge: 001A44
- to stream Ncbi, to step Curation: 001A44
- to stream Ncbi, to step Checkpoint: 001A44
Links to Exploration step
pubmed:21584624Le document en format XML
<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">The impact of light fingertip touch on haptic cortical processing during a standing balance task.</title><author><name sortKey="Bolton, David A E" sort="Bolton, David A E" uniqKey="Bolton D" first="David A E" last="Bolton">David A E. Bolton</name><affiliation wicri:level="1"><nlm:affiliation>Department of Kinesiology, University of Waterloo, 200 University Avenue W, Waterloo, ON N2L 3G1, Canada. dbolton@uwaterloo.ca</nlm:affiliation><country xml:lang="fr">Canada</country><wicri:regionArea>Department of Kinesiology, University of Waterloo, 200 University Avenue W, Waterloo, ON N2L 3G1</wicri:regionArea><wicri:noRegion>ON N2L 3G1</wicri:noRegion></affiliation></author><author><name sortKey="Mcilroy, William E" sort="Mcilroy, William E" uniqKey="Mcilroy W" first="William E" last="Mcilroy">William E. Mcilroy</name></author><author><name sortKey="Staines, W Richard" sort="Staines, W Richard" uniqKey="Staines W" first="W Richard" last="Staines">W Richard Staines</name></author><author><name sortKey="Richard Staines, W" sort="Richard Staines, W" uniqKey="Richard Staines W" first="W" last="Richard Staines">W. Richard Staines</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2011">2011</date><idno type="doi">10.1007/s00221-011-2728-6</idno><idno type="RBID">pubmed:21584624</idno><idno type="pmid">21584624</idno><idno type="wicri:Area/PubMed/Corpus">000E65</idno><idno type="wicri:Area/PubMed/Curation">000E65</idno><idno type="wicri:Area/PubMed/Checkpoint">000C48</idno><idno type="wicri:Area/Ncbi/Merge">001A44</idno><idno type="wicri:Area/Ncbi/Curation">001A44</idno><idno type="wicri:Area/Ncbi/Checkpoint">001A44</idno><idno type="wicri:Area/Main/Merge">002947</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">The impact of light fingertip touch on haptic cortical processing during a standing balance task.</title><author><name sortKey="Bolton, David A E" sort="Bolton, David A E" uniqKey="Bolton D" first="David A E" last="Bolton">David A E. Bolton</name><affiliation wicri:level="1"><nlm:affiliation>Department of Kinesiology, University of Waterloo, 200 University Avenue W, Waterloo, ON N2L 3G1, Canada. dbolton@uwaterloo.ca</nlm:affiliation><country xml:lang="fr">Canada</country><wicri:regionArea>Department of Kinesiology, University of Waterloo, 200 University Avenue W, Waterloo, ON N2L 3G1</wicri:regionArea><wicri:noRegion>ON N2L 3G1</wicri:noRegion></affiliation></author><author><name sortKey="Mcilroy, William E" sort="Mcilroy, William E" uniqKey="Mcilroy W" first="William E" last="Mcilroy">William E. Mcilroy</name></author><author><name sortKey="Staines, W Richard" sort="Staines, W Richard" uniqKey="Staines W" first="W Richard" last="Staines">W Richard Staines</name></author><author><name sortKey="Richard Staines, W" sort="Richard Staines, W" uniqKey="Richard Staines W" first="W" last="Richard Staines">W. Richard Staines</name></author></analytic><series><title level="j">Experimental brain research</title><idno type="eISSN">1432-1106</idno><imprint><date when="2011" type="published">2011</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Adult</term><term>Electroencephalography (methods)</term><term>Electromyography (methods)</term><term>Evoked Potentials, Somatosensory (physiology)</term><term>Fingers (physiology)</term><term>Humans</term><term>Postural Balance (physiology)</term><term>Psychomotor Performance (physiology)</term><term>Sensory Deprivation (physiology)</term><term>Touch (physiology)</term><term>Young Adult</term></keywords><keywords scheme="MESH" qualifier="methods" xml:lang="en"><term>Electroencephalography</term><term>Electromyography</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Evoked Potentials, Somatosensory</term><term>Fingers</term><term>Postural Balance</term><term>Psychomotor Performance</term><term>Sensory Deprivation</term><term>Touch</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Adult</term><term>Humans</term><term>Young Adult</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Availability of fingertip touch onto a stable surface reduces body sway for subjects standing with eyes closed. This is largely associated with sensory feedback from the fingertip when mechanical load is limited. Here, it is possible that the central nervous system facilitates cortical sensory processing to augment feedback to control upright stance. To test this, we compared cortical sensory excitability between tasks with and without light finger touch while standing. Subjects stood in tandem on a force plate with eyes closed while lightly touching a stable surface with the index finger. This was, in two different studies, compared to: (1) no haptic contact or (2) light touch on an object not referenced to balance. Throughout testing, the median nerve was stimulated and electroencephalography was used to measure somatosensory evoked potentials (SEPs). As expected, availability of stable light touch reduced medial-lateral COP sway. Peak amplitudes for SEP components revealed reduced P100 (48%), but increased P50 (31%), N140 (80%), and P200 (20%) during stable touch versus no touch. The modulation of P50 and N140 was no longer present when comparing stable to control (touch), which suggested that attending to touch on either surface, regardless of stability reference, accounted for these changes. Conversely, P200 was increased (19%) when touching the stable surface. Our data show SEP modulation during a standing balance task related to hand contact. Facilitation of P200 in particular may indicate task-specific regulation of the cortical representation of fingertip afferent input when it is relevant to providing stable cues for static balance control.</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
EXPLOR_STEP=$WICRI_ROOT/Ticri/CIDE/explor/HapticV1/Data/Main/Merge
HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 002947 | SxmlIndent | more
Ou
HfdSelect -h $EXPLOR_AREA/Data/Main/Merge/biblio.hfd -nk 002947 | SxmlIndent | more
Pour mettre un lien sur cette page dans le réseau Wicri
{{Explor lien
|wiki= Ticri/CIDE
|area= HapticV1
|flux= Main
|étape= Merge
|type= RBID
|clé= pubmed:21584624
|texte= The impact of light fingertip touch on haptic cortical processing during a standing balance task.
}}
Pour générer des pages wiki
HfdIndexSelect -h $EXPLOR_AREA/Data/Main/Merge/RBID.i -Sk "pubmed:21584624" \
| HfdSelect -Kh $EXPLOR_AREA/Data/Main/Merge/biblio.hfd \
| NlmPubMed2Wicri -a HapticV1
| This area was generated with Dilib version V0.6.23. |  |