Cargando…

The role of parietal cortex in the formation of color and motion based concepts

Imaging evidence shows that separate subdivisions of parietal cortex, in and around the intraparietal sulcus (IPS), are engaged when stimuli are grouped according to color and to motion (Zeki and Stutters, 2013). Since grouping is an essential step in the formation of concepts, we wanted to learn wh...

Descripción completa

Detalles Bibliográficos
Autores principales: Cheadle, Samuel W., Zeki, Semir
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4112936/
https://www.ncbi.nlm.nih.gov/pubmed/25120447
http://dx.doi.org/10.3389/fnhum.2014.00535
_version_ 1782328228040409088
author Cheadle, Samuel W.
Zeki, Semir
author_facet Cheadle, Samuel W.
Zeki, Semir
author_sort Cheadle, Samuel W.
collection PubMed
description Imaging evidence shows that separate subdivisions of parietal cortex, in and around the intraparietal sulcus (IPS), are engaged when stimuli are grouped according to color and to motion (Zeki and Stutters, 2013). Since grouping is an essential step in the formation of concepts, we wanted to learn whether parietal cortex is also engaged in the formation of concepts according to these two attributes. Using functional magnetic resonance imaging (fMRI), and choosing the recognition of concept-based color or motion stimuli as our paradigm, we found that there was strong concept-related activity in and around the IPS, a region whose homolog in the macaque monkey is known to receive direct but segregated anatomical inputs from V4 and V5. Parietal activity related to color concepts was juxtaposed but did not overlap with activity related to motion concepts, thus emphasizing the continuation of the segregation of color and motion into the conceptual system. Concurrent retinotopic mapping experiments showed that within the parietal cortex, concept-related activity increases within later stage IPS areas.
format Online
Article
Text
id pubmed-4112936
institution National Center for Biotechnology Information
language English
publishDate 2014
publisher Frontiers Media S.A.
record_format MEDLINE/PubMed
spelling pubmed-41129362014-08-12 The role of parietal cortex in the formation of color and motion based concepts Cheadle, Samuel W. Zeki, Semir Front Hum Neurosci Neuroscience Imaging evidence shows that separate subdivisions of parietal cortex, in and around the intraparietal sulcus (IPS), are engaged when stimuli are grouped according to color and to motion (Zeki and Stutters, 2013). Since grouping is an essential step in the formation of concepts, we wanted to learn whether parietal cortex is also engaged in the formation of concepts according to these two attributes. Using functional magnetic resonance imaging (fMRI), and choosing the recognition of concept-based color or motion stimuli as our paradigm, we found that there was strong concept-related activity in and around the IPS, a region whose homolog in the macaque monkey is known to receive direct but segregated anatomical inputs from V4 and V5. Parietal activity related to color concepts was juxtaposed but did not overlap with activity related to motion concepts, thus emphasizing the continuation of the segregation of color and motion into the conceptual system. Concurrent retinotopic mapping experiments showed that within the parietal cortex, concept-related activity increases within later stage IPS areas. Frontiers Media S.A. 2014-07-28 /pmc/articles/PMC4112936/ /pubmed/25120447 http://dx.doi.org/10.3389/fnhum.2014.00535 Text en Copyright © 2014 Cheadle and Zeki. http://creativecommons.org/licenses/by/3.0/ 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 Neuroscience
Cheadle, Samuel W.
Zeki, Semir
The role of parietal cortex in the formation of color and motion based concepts
title The role of parietal cortex in the formation of color and motion based concepts
title_full The role of parietal cortex in the formation of color and motion based concepts
title_fullStr The role of parietal cortex in the formation of color and motion based concepts
title_full_unstemmed The role of parietal cortex in the formation of color and motion based concepts
title_short The role of parietal cortex in the formation of color and motion based concepts
title_sort role of parietal cortex in the formation of color and motion based concepts
topic Neuroscience
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4112936/
https://www.ncbi.nlm.nih.gov/pubmed/25120447
http://dx.doi.org/10.3389/fnhum.2014.00535
work_keys_str_mv AT cheadlesamuelw theroleofparietalcortexintheformationofcolorandmotionbasedconcepts
AT zekisemir theroleofparietalcortexintheformationofcolorandmotionbasedconcepts
AT cheadlesamuelw roleofparietalcortexintheformationofcolorandmotionbasedconcepts
AT zekisemir roleofparietalcortexintheformationofcolorandmotionbasedconcepts