Explorations of Object and Location Memory using fMRI
Content-specific sub-systems of visual working memory (VWM) have been explored in many neuroimaging studies with inconsistent findings and procedures across experiments. The present study employed functional magnetic resonance imaging (fMRI) and a change detection task using a high number of trials...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2013-08-01
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| Series: | Frontiers in Behavioral Neuroscience |
| Subjects: | |
| Online Access: | http://journal.frontiersin.org/Journal/10.3389/fnbeh.2013.00105/full |
| _version_ | 1811266658785820672 |
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| author | Antony D Passaro Lauren Caitlin Elmore Timothy Michael Ellmore Kenneth eLeising Andrew C Papanicolaou Anthony A Wright |
| author_facet | Antony D Passaro Lauren Caitlin Elmore Timothy Michael Ellmore Kenneth eLeising Andrew C Papanicolaou Anthony A Wright |
| author_sort | Antony D Passaro |
| collection | DOAJ |
| description | Content-specific sub-systems of visual working memory (VWM) have been explored in many neuroimaging studies with inconsistent findings and procedures across experiments. The present study employed functional magnetic resonance imaging (fMRI) and a change detection task using a high number of trials and matched stimulus displays across object and location change ("what" vs "where") conditions. Furthermore, individual task periods were studied independently across conditions to identify period-specific differences. Importantly, this combination of task controls has not previously been described in the fMRI literature. Composite results revealed differential frontoparietal activation during each task period. A separation of object and location conditions yielded a distributed system of dorsal and ventral streams during the encoding of information corresponding to bilateral inferior parietal lobule (IPL) and lingual gyrus activation, respectively. Differential activity was also shown during the maintenance of information in middle frontal structures bilaterally for objects and the right IPL and left insula for locations. Together, these results reflect a domain-specific dissociation spanning several cortices and task periods. Furthermore, differential activations suggest a general caudal-rostral separation corresponding to object and location memory, respectively. |
| first_indexed | 2024-04-12T20:47:18Z |
| format | Article |
| id | doaj.art-a35eadc06f91455d962ed54c606cc88b |
| institution | Directory Open Access Journal |
| issn | 1662-5153 |
| language | English |
| last_indexed | 2024-04-12T20:47:18Z |
| publishDate | 2013-08-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Behavioral Neuroscience |
| spelling | doaj.art-a35eadc06f91455d962ed54c606cc88b2022-12-22T03:17:15ZengFrontiers Media S.A.Frontiers in Behavioral Neuroscience1662-51532013-08-01710.3389/fnbeh.2013.0010551840Explorations of Object and Location Memory using fMRIAntony D Passaro0Lauren Caitlin Elmore1Timothy Michael Ellmore2Kenneth eLeising3Andrew C Papanicolaou4Anthony A Wright5DCS CorporationBaylor College of MedicineThe City College of New YorkTexas Christian UniversityThe University of Tennessee Health Science CenterThe University of Texas Medical School at HoustonContent-specific sub-systems of visual working memory (VWM) have been explored in many neuroimaging studies with inconsistent findings and procedures across experiments. The present study employed functional magnetic resonance imaging (fMRI) and a change detection task using a high number of trials and matched stimulus displays across object and location change ("what" vs "where") conditions. Furthermore, individual task periods were studied independently across conditions to identify period-specific differences. Importantly, this combination of task controls has not previously been described in the fMRI literature. Composite results revealed differential frontoparietal activation during each task period. A separation of object and location conditions yielded a distributed system of dorsal and ventral streams during the encoding of information corresponding to bilateral inferior parietal lobule (IPL) and lingual gyrus activation, respectively. Differential activity was also shown during the maintenance of information in middle frontal structures bilaterally for objects and the right IPL and left insula for locations. Together, these results reflect a domain-specific dissociation spanning several cortices and task periods. Furthermore, differential activations suggest a general caudal-rostral separation corresponding to object and location memory, respectively.http://journal.frontiersin.org/Journal/10.3389/fnbeh.2013.00105/fullfMRIworking memoryobjectlocationdomain specificity |
| spellingShingle | Antony D Passaro Lauren Caitlin Elmore Timothy Michael Ellmore Kenneth eLeising Andrew C Papanicolaou Anthony A Wright Explorations of Object and Location Memory using fMRI Frontiers in Behavioral Neuroscience fMRI working memory object location domain specificity |
| title | Explorations of Object and Location Memory using fMRI |
| title_full | Explorations of Object and Location Memory using fMRI |
| title_fullStr | Explorations of Object and Location Memory using fMRI |
| title_full_unstemmed | Explorations of Object and Location Memory using fMRI |
| title_short | Explorations of Object and Location Memory using fMRI |
| title_sort | explorations of object and location memory using fmri |
| topic | fMRI working memory object location domain specificity |
| url | http://journal.frontiersin.org/Journal/10.3389/fnbeh.2013.00105/full |
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