Sensory Reweighting in Targeted Reaching: Effects of Conscious Effort, Error History, and Target Salience
Identifieur interne : 004071 ( Main/Exploration ); précédent : 004070; suivant : 004072Sensory Reweighting in Targeted Reaching: Effects of Conscious Effort, Error History, and Target Salience
Auteurs : Hannah J. Block [États-Unis] ; Amy J. BastianSource :
- Journal of Neurophysiology [ 0022-3077 ] ; 2009.
Abstract
When both visual and proprioceptive information are available about the position of a part of the body, the brain weights and combines these sources to form a single estimate, often modeled by minimum variance integration. These weights are known to vary with different circumstances, but the type of information causing the brain to change weights (reweight) is unknown. Here we studied reweighting in the context of estimating the position of a hand for the purpose of reaching it with the other hand. Subjects reached to visual (V), proprioceptive (P), or combined (VP) targets in a virtual reality setup. We calculated weights for vision and proprioception by comparing endpoints on VP reaches with endpoints on P and V reaches. Endpoint visual feedback was manipulated to control completely for the error history seen by subjects. In different experiments, we manipulated target salience, conscious effort, or statistics of the visual error history to see if these cues could cause reweighting. Most subjects could reweight strongly by conscious effort. Changes in target salience reliably caused reweighting, but seen error history alone did not. We also found that experimental weights can be predicted by minimizing the variance of visual and proprioceptive estimates, supporting the idea that minimum variance integration is an important principle of sensorimotor processing.
Url:
DOI: 10.1152/jn.90961.2008
PubMed: 19846617
PubMed Central: 2807220
Affiliations:
Links toward previous steps (curation, corpus...)
- to stream Pmc, to step Corpus: 001393
- to stream Pmc, to step Curation: 001393
- to stream Pmc, to step Checkpoint: 002047
- to stream Ncbi, to step Merge: 001310
- to stream Ncbi, to step Curation: 001310
- to stream Ncbi, to step Checkpoint: 001310
- to stream Main, to step Merge: 004140
- to stream Main, to step Curation: 004071
Le document en format XML
<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Sensory Reweighting in Targeted Reaching: Effects of Conscious Effort, Error History, and Target Salience</title>
<author><name sortKey="Block, Hannah J" sort="Block, Hannah J" uniqKey="Block H" first="Hannah J." last="Block">Hannah J. Block</name>
<affiliation><nlm:aff wicri:cut=" and" id="aff1">Departments of Neuroscience</nlm:aff>
</affiliation>
<affiliation wicri:level="2"><nlm:aff id="aff3">Kennedy Krieger Institute, Baltimore, Maryland</nlm:aff>
<country xml:lang="fr">États-Unis</country>
<placeName><region type="state">Maryland</region>
</placeName>
<wicri:cityArea>Kennedy Krieger Institute, Baltimore</wicri:cityArea>
</affiliation>
</author>
<author><name sortKey="Bastian, Amy J" sort="Bastian, Amy J" uniqKey="Bastian A" first="Amy J." last="Bastian">Amy J. Bastian</name>
<affiliation><nlm:aff>NONE</nlm:aff>
</affiliation>
</author>
</titleStmt>
<publicationStmt><idno type="wicri:source">PMC</idno>
<idno type="pmid">19846617</idno>
<idno type="pmc">2807220</idno>
<idno type="url">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2807220</idno>
<idno type="RBID">PMC:2807220</idno>
<idno type="doi">10.1152/jn.90961.2008</idno>
<date when="2009">2009</date>
<idno type="wicri:Area/Pmc/Corpus">001393</idno>
<idno type="wicri:Area/Pmc/Curation">001393</idno>
<idno type="wicri:Area/Pmc/Checkpoint">002047</idno>
<idno type="wicri:Area/Ncbi/Merge">001310</idno>
<idno type="wicri:Area/Ncbi/Curation">001310</idno>
<idno type="wicri:Area/Ncbi/Checkpoint">001310</idno>
<idno type="wicri:doubleKey">0022-3077:2009:Block H:sensory:reweighting:in</idno>
<idno type="wicri:Area/Main/Merge">004140</idno>
<idno type="wicri:Area/Main/Curation">004071</idno>
<idno type="wicri:Area/Main/Exploration">004071</idno>
</publicationStmt>
<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">Sensory Reweighting in Targeted Reaching: Effects of Conscious Effort, Error History, and Target Salience</title>
<author><name sortKey="Block, Hannah J" sort="Block, Hannah J" uniqKey="Block H" first="Hannah J." last="Block">Hannah J. Block</name>
<affiliation><nlm:aff wicri:cut=" and" id="aff1">Departments of Neuroscience</nlm:aff>
</affiliation>
<affiliation wicri:level="2"><nlm:aff id="aff3">Kennedy Krieger Institute, Baltimore, Maryland</nlm:aff>
<country xml:lang="fr">États-Unis</country>
<placeName><region type="state">Maryland</region>
</placeName>
<wicri:cityArea>Kennedy Krieger Institute, Baltimore</wicri:cityArea>
</affiliation>
</author>
<author><name sortKey="Bastian, Amy J" sort="Bastian, Amy J" uniqKey="Bastian A" first="Amy J." last="Bastian">Amy J. Bastian</name>
<affiliation><nlm:aff>NONE</nlm:aff>
</affiliation>
</author>
</analytic>
<series><title level="j">Journal of Neurophysiology</title>
<idno type="ISSN">0022-3077</idno>
<idno type="eISSN">1522-1598</idno>
<imprint><date when="2009">2009</date>
</imprint>
</series>
</biblStruct>
</sourceDesc>
</fileDesc>
<profileDesc><textClass></textClass>
</profileDesc>
</teiHeader>
<front><div type="abstract" xml:lang="en"><p>When both visual and proprioceptive information are available about the position of a part of the body, the brain weights and combines these sources to form a single estimate, often modeled by minimum variance integration. These weights are known to vary with different circumstances, but the type of information causing the brain to change weights (reweight) is unknown. Here we studied reweighting in the context of estimating the position of a hand for the purpose of reaching it with the other hand. Subjects reached to visual (V), proprioceptive (P), or combined (VP) targets in a virtual reality setup. We calculated weights for vision and proprioception by comparing endpoints on VP reaches with endpoints on P and V reaches. Endpoint visual feedback was manipulated to control completely for the error history seen by subjects. In different experiments, we manipulated target salience, conscious effort, or statistics of the visual error history to see if these cues could cause reweighting. Most subjects could reweight strongly by conscious effort. Changes in target salience reliably caused reweighting, but seen error history alone did not. We also found that experimental weights can be predicted by minimizing the variance of visual and proprioceptive estimates, supporting the idea that minimum variance integration is an important principle of sensorimotor processing.</p>
</div>
</front>
</TEI>
<affiliations><list><country><li>États-Unis</li>
</country>
<region><li>Maryland</li>
</region>
</list>
<tree><noCountry><name sortKey="Bastian, Amy J" sort="Bastian, Amy J" uniqKey="Bastian A" first="Amy J." last="Bastian">Amy J. Bastian</name>
</noCountry>
<country name="États-Unis"><region name="Maryland"><name sortKey="Block, Hannah J" sort="Block, Hannah J" uniqKey="Block H" first="Hannah J." last="Block">Hannah J. Block</name>
</region>
</country>
</tree>
</affiliations>
</record>
Pour manipuler ce document sous Unix (Dilib)
EXPLOR_STEP=$WICRI_ROOT/Ticri/CIDE/explor/HapticV1/Data/Main/Exploration
HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 004071 | SxmlIndent | more
Ou
HfdSelect -h $EXPLOR_AREA/Data/Main/Exploration/biblio.hfd -nk 004071 | SxmlIndent | more
Pour mettre un lien sur cette page dans le réseau Wicri
{{Explor lien |wiki= Ticri/CIDE |area= HapticV1 |flux= Main |étape= Exploration |type= RBID |clé= PMC:2807220 |texte= Sensory Reweighting in Targeted Reaching: Effects of Conscious Effort, Error History, and Target Salience }}
Pour générer des pages wiki
HfdIndexSelect -h $EXPLOR_AREA/Data/Main/Exploration/RBID.i -Sk "pubmed:19846617" \ | HfdSelect -Kh $EXPLOR_AREA/Data/Main/Exploration/biblio.hfd \ | NlmPubMed2Wicri -a HapticV1
![]() | This area was generated with Dilib version V0.6.23. | ![]() |