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An fMRI study dissociating distance measures computed by Broca's area in movement processing: clause boundary vs. identity

Behavioral studies of sentence comprehension suggest that processing long-distance dependencies is subject to interference effects when Noun Phrases (NP) similar to the dependency head intervene in the dependency. Neuroimaging studies converge in localizing such effects to Broca's area, showing...

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Autores principales: Santi, Andrea, Friederici, Angela D., Makuuchi, Michiru, Grodzinsky, Yosef
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4438592/
https://www.ncbi.nlm.nih.gov/pubmed/26042078
http://dx.doi.org/10.3389/fpsyg.2015.00654
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author Santi, Andrea
Friederici, Angela D.
Makuuchi, Michiru
Grodzinsky, Yosef
author_facet Santi, Andrea
Friederici, Angela D.
Makuuchi, Michiru
Grodzinsky, Yosef
author_sort Santi, Andrea
collection PubMed
description Behavioral studies of sentence comprehension suggest that processing long-distance dependencies is subject to interference effects when Noun Phrases (NP) similar to the dependency head intervene in the dependency. Neuroimaging studies converge in localizing such effects to Broca's area, showing that activity in Broca's area increases with the number of NP interveners crossed by a moved NP of the same type. To test if NP interference effects are modulated by adding an intervening clause boundary, which should by hypothesis increase the number of successive-cyclic movements, we conducted an fMRI study contrasting NP interveners with clausal (CP) interveners. Our design thus had two components: (I) the number of NP interveners crossed by movement was parametrically modulated; (II) CP-intervention was contrasted with NP-intervention. The number of NP interveners parametrically modulated a cluster straddling left BA44/45 of Broca's area, replicating earlier studies. Adding an intervening clause boundary did not significantly modulate the size of the NP interference effect in Broca's area. Yet, such an interaction effect was observed in the Superior Frontal Gyrus (SFG). Therefore, the involvement of Broca's area in processing syntactic movement is best captured by memory mechanisms affected by a grammatically instantiated type-identity (i.e., NP) intervention.
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spelling pubmed-44385922015-06-03 An fMRI study dissociating distance measures computed by Broca's area in movement processing: clause boundary vs. identity Santi, Andrea Friederici, Angela D. Makuuchi, Michiru Grodzinsky, Yosef Front Psychol Psychology Behavioral studies of sentence comprehension suggest that processing long-distance dependencies is subject to interference effects when Noun Phrases (NP) similar to the dependency head intervene in the dependency. Neuroimaging studies converge in localizing such effects to Broca's area, showing that activity in Broca's area increases with the number of NP interveners crossed by a moved NP of the same type. To test if NP interference effects are modulated by adding an intervening clause boundary, which should by hypothesis increase the number of successive-cyclic movements, we conducted an fMRI study contrasting NP interveners with clausal (CP) interveners. Our design thus had two components: (I) the number of NP interveners crossed by movement was parametrically modulated; (II) CP-intervention was contrasted with NP-intervention. The number of NP interveners parametrically modulated a cluster straddling left BA44/45 of Broca's area, replicating earlier studies. Adding an intervening clause boundary did not significantly modulate the size of the NP interference effect in Broca's area. Yet, such an interaction effect was observed in the Superior Frontal Gyrus (SFG). Therefore, the involvement of Broca's area in processing syntactic movement is best captured by memory mechanisms affected by a grammatically instantiated type-identity (i.e., NP) intervention. Frontiers Media S.A. 2015-05-20 /pmc/articles/PMC4438592/ /pubmed/26042078 http://dx.doi.org/10.3389/fpsyg.2015.00654 Text en Copyright © 2015 Santi, Friederici, Makuuchi and Grodzinsky. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Psychology
Santi, Andrea
Friederici, Angela D.
Makuuchi, Michiru
Grodzinsky, Yosef
An fMRI study dissociating distance measures computed by Broca's area in movement processing: clause boundary vs. identity
title An fMRI study dissociating distance measures computed by Broca's area in movement processing: clause boundary vs. identity
title_full An fMRI study dissociating distance measures computed by Broca's area in movement processing: clause boundary vs. identity
title_fullStr An fMRI study dissociating distance measures computed by Broca's area in movement processing: clause boundary vs. identity
title_full_unstemmed An fMRI study dissociating distance measures computed by Broca's area in movement processing: clause boundary vs. identity
title_short An fMRI study dissociating distance measures computed by Broca's area in movement processing: clause boundary vs. identity
title_sort fmri study dissociating distance measures computed by broca's area in movement processing: clause boundary vs. identity
topic Psychology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4438592/
https://www.ncbi.nlm.nih.gov/pubmed/26042078
http://dx.doi.org/10.3389/fpsyg.2015.00654
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