InforLorV4, PascalFrancis, Corpus, bibRecord, 000378

Is there continuity between categorical and coordinate spatial relations coding? Evidence from a grid/no-grid working memory paradigm

Identifieur interne : 000378 ( PascalFrancis/Corpus ); précédent : 000377; suivant : 000379

Is there continuity between categorical and coordinate spatial relations coding? Evidence from a grid/no-grid working memory paradigm

Auteurs : Romain Martin ; Claude Houssemand ; Christine Schiltz ; Yves Burnod ; Frédéric Alexandre

Source :

Neuropsychologia [ 0028-3932 ] ; 2008.

RBID : Francis:08-0138425

Descripteurs français

Pascal (Inist)
- Organisation spatiale, Codage, Mémoire de travail, Cognition, Imagerie RMN, Imagerie fonctionnelle, Attention, Cortex pariétal, Cortex préfrontal, Catégorisation, Perception espace, Vision, Homme.

English descriptors

KwdEn :
- Attention, Categorization, Coding, Cognition, Functional imaging, Human, Nuclear magnetic resonance imaging, Parietal cortex, Prefrontal cortex, Space perception, Spatial organization, Vision, Working memory.

Abstract

We ask the question whether the coding of categorical versus coordinate spatial relations depends on different neural networks showing hemispheric specialization or whether there is continuity between these two coding types. The 'continuous spatial coding' hypothesis would mean that the two coding types rely essentially on the same neural network consisting of more general-purpose processes, such as visuo-spatial attention, but with a different weighting of these general processes depending on exact task requirements. With event-related fMRI, we have studied right-handed male subjects performing a grid/no-grid visuo-spatial working memory task inducing categorical and coordinate spatial relations coding. Our data support the 'continuous spatial coding' hypothesis, indicating that, while based on the same fronto-parieto-occipital neural network than categorical spatial relations coding, the coding of coordinate spatial relations relies more heavily on attentional and executive processes, which could induce hemispheric differences similar to those described in the literature. The results also show that visuo-spatial working memory consists of a short-term posterior store with a capacity of up to three elements in the parietal and extrastriate cortices. This store depends on the presence of a visible space categorization and thus can be used for the coding of categorical spatial relations. When no visible space categorization is given or when more than three elements have to be coded, additional attentional and executive processes are recruited, mainly located in the dorso-lateral prefrontal cortex.

Notice en format standard (ISO 2709)

Pour connaître la documentation sur le format Inist Standard.

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Format Inist (serveur)

NO :	FRANCIS 08-0138425 INIST
ET :	Is there continuity between categorical and coordinate spatial relations coding? Evidence from a grid/no-grid working memory paradigm
AU :	MARTIN (Romain); HOUSSEMAND (Claude); SCHILTZ (Christine); BURNOD (Yves); ALEXANDRE (Frédéric)
AF :	EMACS research unit, FLSHASE, University of Luxembourg Campus Walferdange BP 2/7201 Walferdange/Luxembourg (1 aut., 2 aut., 3 aut.); INSERM, Unité 483/Paris/France (4 aut.); INRIA Lorraine/LORIA-CNRS BP 239/54506 Vandoeuvre-les-Nancy/France (5 aut.)
DT :	Publication en série; Niveau analytique
SO :	Neuropsychologia; ISSN 0028-3932; Coden NUPSA6; Royaume-Uni; Da. 2008; Vol. 46; No. 2; Pp. 576-594; Bibl. 1 p.1/2
LA :	Anglais
EA :	We ask the question whether the coding of categorical versus coordinate spatial relations depends on different neural networks showing hemispheric specialization or whether there is continuity between these two coding types. The 'continuous spatial coding' hypothesis would mean that the two coding types rely essentially on the same neural network consisting of more general-purpose processes, such as visuo-spatial attention, but with a different weighting of these general processes depending on exact task requirements. With event-related fMRI, we have studied right-handed male subjects performing a grid/no-grid visuo-spatial working memory task inducing categorical and coordinate spatial relations coding. Our data support the 'continuous spatial coding' hypothesis, indicating that, while based on the same fronto-parieto-occipital neural network than categorical spatial relations coding, the coding of coordinate spatial relations relies more heavily on attentional and executive processes, which could induce hemispheric differences similar to those described in the literature. The results also show that visuo-spatial working memory consists of a short-term posterior store with a capacity of up to three elements in the parietal and extrastriate cortices. This store depends on the presence of a visible space categorization and thus can be used for the coding of categorical spatial relations. When no visible space categorization is given or when more than three elements have to be coded, additional attentional and executive processes are recruited, mainly located in the dorso-lateral prefrontal cortex.
CC :	770D03D; 770B05C; 770B06G01
FD :	Organisation spatiale; Codage; Mémoire de travail; Cognition; Imagerie RMN; Imagerie fonctionnelle; Attention; Cortex pariétal; Cortex préfrontal; Catégorisation; Perception espace; Vision; Homme
FG :	Encéphale; Système nerveux central; Perception
ED :	Spatial organization; Coding; Working memory; Cognition; Nuclear magnetic resonance imaging; Functional imaging; Attention; Parietal cortex; Prefrontal cortex; Categorization; Space perception; Vision; Human
EG :	Encephalon; Central nervous system; Perception
SD :	Organización espacial; Codificación; Memoria trabajo; Cognición; Imaginería RMN; Imaginería funcional; Atención; Corteza parietal; Corteza prefrontal; Categorización; Percepción espacio; Visión; Hombre
LO :	INIST-11143.354000175077580180
ID :	08-0138425

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Francis:08-0138425

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<fC03 i1="02" i2="X" l="FRE"><s0>Codage</s0>
<s5>02</s5>
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<fC03 i1="02" i2="X" l="ENG"><s0>Coding</s0>
<s5>02</s5>
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<s5>02</s5>
</fC03>
<fC03 i1="03" i2="X" l="FRE"><s0>Mémoire de travail</s0>
<s5>03</s5>
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<s5>03</s5>
</fC03>
<fC03 i1="03" i2="X" l="SPA"><s0>Memoria trabajo</s0>
<s5>03</s5>
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<fC03 i1="04" i2="X" l="FRE"><s0>Cognition</s0>
<s5>04</s5>
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<fC03 i1="04" i2="X" l="ENG"><s0>Cognition</s0>
<s5>04</s5>
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<s5>05</s5>
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<s5>05</s5>
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<fC03 i1="05" i2="X" l="SPA"><s0>Imaginería RMN</s0>
<s5>05</s5>
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<s5>06</s5>
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<s5>06</s5>
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<s5>06</s5>
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<s5>07</s5>
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<s5>08</s5>
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<s5>08</s5>
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<s5>08</s5>
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<fC03 i1="09" i2="X" l="FRE"><s0>Cortex préfrontal</s0>
<s5>09</s5>
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<s5>09</s5>
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<s5>09</s5>
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<s5>10</s5>
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<s5>12</s5>
</fC03>
<fC03 i1="12" i2="X" l="ENG"><s0>Vision</s0>
<s5>12</s5>
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<fC03 i1="12" i2="X" l="SPA"><s0>Visión</s0>
<s5>12</s5>
</fC03>
<fC03 i1="13" i2="X" l="FRE"><s0>Homme</s0>
<s5>18</s5>
</fC03>
<fC03 i1="13" i2="X" l="ENG"><s0>Human</s0>
<s5>18</s5>
</fC03>
<fC03 i1="13" i2="X" l="SPA"><s0>Hombre</s0>
<s5>18</s5>
</fC03>
<fC07 i1="01" i2="X" l="FRE"><s0>Encéphale</s0>
<s5>37</s5>
</fC07>
<fC07 i1="01" i2="X" l="ENG"><s0>Encephalon</s0>
<s5>37</s5>
</fC07>
<fC07 i1="01" i2="X" l="SPA"><s0>Encéfalo</s0>
<s5>37</s5>
</fC07>
<fC07 i1="02" i2="X" l="FRE"><s0>Système nerveux central</s0>
<s5>38</s5>
</fC07>
<fC07 i1="02" i2="X" l="ENG"><s0>Central nervous system</s0>
<s5>38</s5>
</fC07>
<fC07 i1="02" i2="X" l="SPA"><s0>Sistema nervioso central</s0>
<s5>38</s5>
</fC07>
<fC07 i1="03" i2="X" l="FRE"><s0>Perception</s0>
<s5>39</s5>
</fC07>
<fC07 i1="03" i2="X" l="ENG"><s0>Perception</s0>
<s5>39</s5>
</fC07>
<fC07 i1="03" i2="X" l="SPA"><s0>Percepción</s0>
<s5>39</s5>
</fC07>
<fN21><s1>084</s1>
</fN21>
</pA>
</standard>
<server><NO>FRANCIS 08-0138425 INIST</NO>
<ET>Is there continuity between categorical and coordinate spatial relations coding? Evidence from a grid/no-grid working memory paradigm</ET>
<AU>MARTIN (Romain); HOUSSEMAND (Claude); SCHILTZ (Christine); BURNOD (Yves); ALEXANDRE (Frédéric)</AU>
<AF>EMACS research unit, FLSHASE, University of Luxembourg Campus Walferdange BP 2/7201 Walferdange/Luxembourg (1 aut., 2 aut., 3 aut.); INSERM, Unité 483/Paris/France (4 aut.); INRIA Lorraine/LORIA-CNRS BP 239/54506 Vandoeuvre-les-Nancy/France (5 aut.)</AF>
<DT>Publication en série; Niveau analytique</DT>
<SO>Neuropsychologia; ISSN 0028-3932; Coden NUPSA6; Royaume-Uni; Da. 2008; Vol. 46; No. 2; Pp. 576-594; Bibl. 1 p.1/2</SO>
<LA>Anglais</LA>
<EA>We ask the question whether the coding of categorical versus coordinate spatial relations depends on different neural networks showing hemispheric specialization or whether there is continuity between these two coding types. The 'continuous spatial coding' hypothesis would mean that the two coding types rely essentially on the same neural network consisting of more general-purpose processes, such as visuo-spatial attention, but with a different weighting of these general processes depending on exact task requirements. With event-related fMRI, we have studied right-handed male subjects performing a grid/no-grid visuo-spatial working memory task inducing categorical and coordinate spatial relations coding. Our data support the 'continuous spatial coding' hypothesis, indicating that, while based on the same fronto-parieto-occipital neural network than categorical spatial relations coding, the coding of coordinate spatial relations relies more heavily on attentional and executive processes, which could induce hemispheric differences similar to those described in the literature. The results also show that visuo-spatial working memory consists of a short-term posterior store with a capacity of up to three elements in the parietal and extrastriate cortices. This store depends on the presence of a visible space categorization and thus can be used for the coding of categorical spatial relations. When no visible space categorization is given or when more than three elements have to be coded, additional attentional and executive processes are recruited, mainly located in the dorso-lateral prefrontal cortex.</EA>
<CC>770D03D; 770B05C; 770B06G01</CC>
<FD>Organisation spatiale; Codage; Mémoire de travail; Cognition; Imagerie RMN; Imagerie fonctionnelle; Attention; Cortex pariétal; Cortex préfrontal; Catégorisation; Perception espace; Vision; Homme</FD>
<FG>Encéphale; Système nerveux central; Perception</FG>
<ED>Spatial organization; Coding; Working memory; Cognition; Nuclear magnetic resonance imaging; Functional imaging; Attention; Parietal cortex; Prefrontal cortex; Categorization; Space perception; Vision; Human</ED>
<EG>Encephalon; Central nervous system; Perception</EG>
<SD>Organización espacial; Codificación; Memoria trabajo; Cognición; Imaginería RMN; Imaginería funcional; Atención; Corteza parietal; Corteza prefrontal; Categorización; Percepción espacio; Visión; Hombre</SD>
<LO>INIST-11143.354000175077580180</LO>
<ID>08-0138425</ID>
</server>
</inist>
</record>

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Is there continuity between categorical and coordinate spatial relations coding? Evidence from a grid/no-grid working memory paradigm

Is there continuity between categorical and coordinate spatial relations coding? Evidence from a grid/no-grid working memory paradigm

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