Heightened Responses of the Parahippocampal and Retrosplenial Cortices during Contextualized Recognition of Congruent Objects
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 co...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2017-12-01
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| Series: | Frontiers in Behavioral Neuroscience |
| Subjects: | |
| Online Access: | http://journal.frontiersin.org/article/10.3389/fnbeh.2017.00232/full |
| _version_ | 1830341516278628352 |
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| author | Daina Crafa Colin Hawco Mathieu B. Brodeur |
| author_facet | Daina Crafa Colin Hawco Mathieu B. Brodeur |
| author_sort | Daina Crafa |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-12-19T21:35:22Z |
| format | Article |
| id | doaj.art-97b9cd77540b4e358622b0f85e7f467d |
| institution | Directory Open Access Journal |
| issn | 1662-5153 |
| language | English |
| last_indexed | 2024-12-19T21:35:22Z |
| publishDate | 2017-12-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Behavioral Neuroscience |
| spelling | doaj.art-97b9cd77540b4e358622b0f85e7f467d2022-12-21T20:04:48ZengFrontiers Media S.A.Frontiers in Behavioral Neuroscience1662-51532017-12-011110.3389/fnbeh.2017.00232257076Heightened Responses of the Parahippocampal and Retrosplenial Cortices during Contextualized Recognition of Congruent ObjectsDaina Crafa0Colin Hawco1Mathieu B. Brodeur2Integrated Program in Neuroscience, McGill University, Montreal, QC, CanadaCampbell Family Mental Health Institute, Centre for Addiction and Mental Health, Toronto, ON, CanadaDepartment of Psychiatry, Douglas Mental Health University Institute, McGill University, Montreal, QC, CanadaContext 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.http://journal.frontiersin.org/article/10.3389/fnbeh.2017.00232/fullfMRIscene contextobject recognitionparahippocampal cortexretrosplenial cortex |
| spellingShingle | Daina Crafa Colin Hawco Mathieu B. Brodeur Heightened Responses of the Parahippocampal and Retrosplenial Cortices during Contextualized Recognition of Congruent Objects Frontiers in Behavioral Neuroscience fMRI scene context object recognition parahippocampal cortex retrosplenial cortex |
| title | Heightened Responses of the Parahippocampal and Retrosplenial Cortices during Contextualized Recognition of Congruent Objects |
| title_full | Heightened Responses of the Parahippocampal and Retrosplenial Cortices during Contextualized Recognition of Congruent Objects |
| title_fullStr | Heightened Responses of the Parahippocampal and Retrosplenial Cortices during Contextualized Recognition of Congruent Objects |
| title_full_unstemmed | Heightened Responses of the Parahippocampal and Retrosplenial Cortices during Contextualized Recognition of Congruent Objects |
| title_short | Heightened Responses of the Parahippocampal and Retrosplenial Cortices during Contextualized Recognition of Congruent Objects |
| title_sort | heightened responses of the parahippocampal and retrosplenial cortices during contextualized recognition of congruent objects |
| topic | fMRI scene context object recognition parahippocampal cortex retrosplenial cortex |
| url | http://journal.frontiersin.org/article/10.3389/fnbeh.2017.00232/full |
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