Heightened Responses of the Parahippocampal and Retrosplenial Cortices during Contextualized Recognition of Congruent Objects

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Heightened Responses of the Parahippocampal and Retrosplenial Cortices during Contextualized Recognition of Congruent Objects. / Crafa, Daina; Hawco, Colin; Brodeur, Mathieu B.

In: Frontiers in Behavioral Neuroscience, Vol. 11, 232, 14.12.2017.

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Crafa, Daina ; Hawco, Colin ; Brodeur, Mathieu B. / Heightened Responses of the Parahippocampal and Retrosplenial Cortices during Contextualized Recognition of Congruent Objects. In: Frontiers in Behavioral Neuroscience. 2017 ; Vol. 11.

Bibtex

@article{04fa2dc7759845af83f36b0b19dc8fd4,
title = "Heightened Responses of the Parahippocampal and Retrosplenial Cortices during Contextualized Recognition of Congruent Objects",
abstract = "Context sometimes helps make objects more recognizable. Previous studies using functional magnetic resonance imaging (fMRI) have examined regional neural activity when objects have strong or weak associations with their contexts. Such studies have demonstrated that activity in the parahippocampal cortex (PHC) generally corresponds with strong associations between objects and their spatial contexts while retrosplenial cortex (RSC) activity is linked with episodic memory. However these studies investigated objects viewed in associated contexts, but the direct influence of scene on the perception of visual objects has not been widely investigated. We hypothesized that the PHC and RSC may only be engaged for congruent contexts in which the object could typically be found but not for neutral contexts. While in an fMRI scanner, 15 participants rated the recognizability of 152 photographic images of objects, presented within congruent and incongruent contexts. Regions of interest were created to examine PHC and RSC activity using a hypothesis-driven approach. Exploratory analyses were also performed to identify other regional activity. In line with previous studies, PHC and RSC activity emerged when objects were viewed in congruent contexts. Activity in the RSC, inferior parietal lobe (IPL) and fusiform gyrus also emerged. These findings indicate that different brain regions are employed when objects are meaningfully contextualized.",
keywords = "fMRI, scene context, object recognition, parahippocampal cortex, retrosplenial cortex, VISUAL SCENES, PARIETAL LOBE, CORTEX, BRAIN, ASSOCIATIONS, MEMORY, IDENTIFICATION, REPRESENTATION, PERCEPTION, STIMULI",
author = "Daina Crafa and Colin Hawco and Brodeur, {Mathieu B.}",
year = "2017",
month = "12",
day = "14",
doi = "10.3389/fnbeh.2017.00232",
language = "English",
volume = "11",
journal = "Frontiers in Behavioral Neuroscience",
issn = "1662-5153",
publisher = "Frontiers Research Foundation",

}

RIS

TY - JOUR

T1 - Heightened Responses of the Parahippocampal and Retrosplenial Cortices during Contextualized Recognition of Congruent Objects

AU - Crafa, Daina

AU - Hawco, Colin

AU - Brodeur, Mathieu B.

PY - 2017/12/14

Y1 - 2017/12/14

N2 - Context sometimes helps make objects more recognizable. Previous studies using functional magnetic resonance imaging (fMRI) have examined regional neural activity when objects have strong or weak associations with their contexts. Such studies have demonstrated that activity in the parahippocampal cortex (PHC) generally corresponds with strong associations between objects and their spatial contexts while retrosplenial cortex (RSC) activity is linked with episodic memory. However these studies investigated objects viewed in associated contexts, but the direct influence of scene on the perception of visual objects has not been widely investigated. We hypothesized that the PHC and RSC may only be engaged for congruent contexts in which the object could typically be found but not for neutral contexts. While in an fMRI scanner, 15 participants rated the recognizability of 152 photographic images of objects, presented within congruent and incongruent contexts. Regions of interest were created to examine PHC and RSC activity using a hypothesis-driven approach. Exploratory analyses were also performed to identify other regional activity. In line with previous studies, PHC and RSC activity emerged when objects were viewed in congruent contexts. Activity in the RSC, inferior parietal lobe (IPL) and fusiform gyrus also emerged. These findings indicate that different brain regions are employed when objects are meaningfully contextualized.

AB - Context sometimes helps make objects more recognizable. Previous studies using functional magnetic resonance imaging (fMRI) have examined regional neural activity when objects have strong or weak associations with their contexts. Such studies have demonstrated that activity in the parahippocampal cortex (PHC) generally corresponds with strong associations between objects and their spatial contexts while retrosplenial cortex (RSC) activity is linked with episodic memory. However these studies investigated objects viewed in associated contexts, but the direct influence of scene on the perception of visual objects has not been widely investigated. We hypothesized that the PHC and RSC may only be engaged for congruent contexts in which the object could typically be found but not for neutral contexts. While in an fMRI scanner, 15 participants rated the recognizability of 152 photographic images of objects, presented within congruent and incongruent contexts. Regions of interest were created to examine PHC and RSC activity using a hypothesis-driven approach. Exploratory analyses were also performed to identify other regional activity. In line with previous studies, PHC and RSC activity emerged when objects were viewed in congruent contexts. Activity in the RSC, inferior parietal lobe (IPL) and fusiform gyrus also emerged. These findings indicate that different brain regions are employed when objects are meaningfully contextualized.

KW - fMRI

KW - scene context

KW - object recognition

KW - parahippocampal cortex

KW - retrosplenial cortex

KW - VISUAL SCENES

KW - PARIETAL LOBE

KW - CORTEX

KW - BRAIN

KW - ASSOCIATIONS

KW - MEMORY

KW - IDENTIFICATION

KW - REPRESENTATION

KW - PERCEPTION

KW - STIMULI

U2 - 10.3389/fnbeh.2017.00232

DO - 10.3389/fnbeh.2017.00232

M3 - Journal article

VL - 11

JO - Frontiers in Behavioral Neuroscience

JF - Frontiers in Behavioral Neuroscience

SN - 1662-5153

M1 - 232

ER -