Neuroimaging Evidence for Processes Underlying Repetition of Ignored Stimuli
Prolonged response times are observed with targets having been presented as distractors immediately before, called negative priming effect. Among others, inhibitory and retrieval processes have been suggested underlying this behavioral effect. As those processes would involve different neural activa...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2012
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3341391/ https://www.ncbi.nlm.nih.gov/pubmed/22563478 http://dx.doi.org/10.1371/journal.pone.0036089 |
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author | Bauer, Eva Gebhardt, Helge Ruprecht, Christoph Gallhofer, Bernd Sammer, Gebhard |
author_facet | Bauer, Eva Gebhardt, Helge Ruprecht, Christoph Gallhofer, Bernd Sammer, Gebhard |
author_sort | Bauer, Eva |
collection | PubMed |
description | Prolonged response times are observed with targets having been presented as distractors immediately before, called negative priming effect. Among others, inhibitory and retrieval processes have been suggested underlying this behavioral effect. As those processes would involve different neural activation patterns, a functional magnetic resonance imaging (fMRI) study including 28 subjects was conducted. Two tasks were used to investigate stimulus repetition effects. One task focused on target location, the other on target identity. Both tasks are known to elicit the expected response time effects. However, there is less agreement about the relationship of those tasks with the explanatory accounts under consideration. Based on within-subject comparisons we found clear differences between the experimental repetition conditions and the neutral control condition on neural level for both tasks. Hemodynamic fronto-striatal activation patterns occurred for the location-based task favoring the selective inhibition account. Hippocampal activation found for the identity-based task suggests an assignment to the retrieval account; however, this task lacked a behavioral effect. |
format | Online Article Text |
id | pubmed-3341391 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2012 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-33413912012-05-04 Neuroimaging Evidence for Processes Underlying Repetition of Ignored Stimuli Bauer, Eva Gebhardt, Helge Ruprecht, Christoph Gallhofer, Bernd Sammer, Gebhard PLoS One Research Article Prolonged response times are observed with targets having been presented as distractors immediately before, called negative priming effect. Among others, inhibitory and retrieval processes have been suggested underlying this behavioral effect. As those processes would involve different neural activation patterns, a functional magnetic resonance imaging (fMRI) study including 28 subjects was conducted. Two tasks were used to investigate stimulus repetition effects. One task focused on target location, the other on target identity. Both tasks are known to elicit the expected response time effects. However, there is less agreement about the relationship of those tasks with the explanatory accounts under consideration. Based on within-subject comparisons we found clear differences between the experimental repetition conditions and the neutral control condition on neural level for both tasks. Hemodynamic fronto-striatal activation patterns occurred for the location-based task favoring the selective inhibition account. Hippocampal activation found for the identity-based task suggests an assignment to the retrieval account; however, this task lacked a behavioral effect. Public Library of Science 2012-05-01 /pmc/articles/PMC3341391/ /pubmed/22563478 http://dx.doi.org/10.1371/journal.pone.0036089 Text en Bauer et al. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited. |
spellingShingle | Research Article Bauer, Eva Gebhardt, Helge Ruprecht, Christoph Gallhofer, Bernd Sammer, Gebhard Neuroimaging Evidence for Processes Underlying Repetition of Ignored Stimuli |
title | Neuroimaging Evidence for Processes Underlying Repetition of Ignored Stimuli |
title_full | Neuroimaging Evidence for Processes Underlying Repetition of Ignored Stimuli |
title_fullStr | Neuroimaging Evidence for Processes Underlying Repetition of Ignored Stimuli |
title_full_unstemmed | Neuroimaging Evidence for Processes Underlying Repetition of Ignored Stimuli |
title_short | Neuroimaging Evidence for Processes Underlying Repetition of Ignored Stimuli |
title_sort | neuroimaging evidence for processes underlying repetition of ignored stimuli |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3341391/ https://www.ncbi.nlm.nih.gov/pubmed/22563478 http://dx.doi.org/10.1371/journal.pone.0036089 |
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