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The Lateral Occipital Cortex in the Face Perception Network: An Effective Connectivity Study

The perception of faces involves a large network of cortical areas of the human brain. While several studies tested this network recently, its relationship to the lateral occipital (LO) cortex known to be involved in visual object perception remains largely unknown. We used functional magnetic reson...

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Autores principales: Nagy, Krisztina, Greenlee, Mark W., Kovács, Gyula
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Research Foundation 2012
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3349303/
https://www.ncbi.nlm.nih.gov/pubmed/22593748
http://dx.doi.org/10.3389/fpsyg.2012.00141
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author Nagy, Krisztina
Greenlee, Mark W.
Kovács, Gyula
author_facet Nagy, Krisztina
Greenlee, Mark W.
Kovács, Gyula
author_sort Nagy, Krisztina
collection PubMed
description The perception of faces involves a large network of cortical areas of the human brain. While several studies tested this network recently, its relationship to the lateral occipital (LO) cortex known to be involved in visual object perception remains largely unknown. We used functional magnetic resonance imaging and dynamic causal modeling (DCM) to test the effective connectivity among the major areas of the face-processing core network and LO. Specifically, we tested how LO is connected to the fusiform face area (FFA) and occipital face area (OFA) and which area provides the major face/object input to the network. We found that LO is connected via significant bidirectional connections to both OFA and FFA, suggesting the existence of a triangular network. In addition, our results also suggest that face- and object-related stimulus inputs are not entirely segregated at these lower level stages of face-processing and enter the network via the LO. These results support the role of LO in face perception, at least at the level of face/non-face stimulus discrimination.
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spelling pubmed-33493032012-05-16 The Lateral Occipital Cortex in the Face Perception Network: An Effective Connectivity Study Nagy, Krisztina Greenlee, Mark W. Kovács, Gyula Front Psychol Psychology The perception of faces involves a large network of cortical areas of the human brain. While several studies tested this network recently, its relationship to the lateral occipital (LO) cortex known to be involved in visual object perception remains largely unknown. We used functional magnetic resonance imaging and dynamic causal modeling (DCM) to test the effective connectivity among the major areas of the face-processing core network and LO. Specifically, we tested how LO is connected to the fusiform face area (FFA) and occipital face area (OFA) and which area provides the major face/object input to the network. We found that LO is connected via significant bidirectional connections to both OFA and FFA, suggesting the existence of a triangular network. In addition, our results also suggest that face- and object-related stimulus inputs are not entirely segregated at these lower level stages of face-processing and enter the network via the LO. These results support the role of LO in face perception, at least at the level of face/non-face stimulus discrimination. Frontiers Research Foundation 2012-05-10 /pmc/articles/PMC3349303/ /pubmed/22593748 http://dx.doi.org/10.3389/fpsyg.2012.00141 Text en Copyright © 2012 Nagy, Greenlee and Kovács. http://www.frontiersin.org/licenseagreement This is an open-access article distributed under the terms of the Creative Commons Attribution Non Commercial License, which permits non-commercial use, distribution, and reproduction in other forums, provided the original authors and source are credited.
spellingShingle Psychology
Nagy, Krisztina
Greenlee, Mark W.
Kovács, Gyula
The Lateral Occipital Cortex in the Face Perception Network: An Effective Connectivity Study
title The Lateral Occipital Cortex in the Face Perception Network: An Effective Connectivity Study
title_full The Lateral Occipital Cortex in the Face Perception Network: An Effective Connectivity Study
title_fullStr The Lateral Occipital Cortex in the Face Perception Network: An Effective Connectivity Study
title_full_unstemmed The Lateral Occipital Cortex in the Face Perception Network: An Effective Connectivity Study
title_short The Lateral Occipital Cortex in the Face Perception Network: An Effective Connectivity Study
title_sort lateral occipital cortex in the face perception network: an effective connectivity study
topic Psychology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3349303/
https://www.ncbi.nlm.nih.gov/pubmed/22593748
http://dx.doi.org/10.3389/fpsyg.2012.00141
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