Charles-Olivier Martin, Stéphanie Pontbriand-Drolet, Valérie Daoust, Eric Yamga, Mahnoush Amiri, Lilian C. Hubner and Bernadette Ska
Article (2018)
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Abstract
Discourse comprehension is at the core of communication capabilities, making it an important component of elderly populations' quality of life. The aim of this study is to evaluate changes in discourse comprehension and the underlying brain activity. Thirty-six participants read short stories and answered related probes in three conditions: micropropositions, macropropositions and situation models. Using near-infrared spectroscopy (NIRS), the variation in oxyhemoglobin (HbO2) and deoxyhemoglobin (HbR) concentrations was assessed throughout the task. The results revealed that the older adults performed with equivalent accuracy to the young ones at the macroproposition level of discourse comprehension, but were less accurate at the microproposition and situation model levels. Similar to what is described in the compensation-related utilization of neural circuits hypothesis (CRUNCH) model, older participants tended to have greater activation in the left dorsolateral prefrontal cortex while reading in all conditions. Although it did not enable them to perform similarly to younger participants in all conditions, this over-activation could be interpreted as a compensation mechanism.
Uncontrolled Keywords
Nirs; aging; cerebral plasticity; discourse comprehension; language
Subjects: |
1900 Biomedical engineering > 1900 Biomedical engineering 8000 Social sciences and humanities > 8000 Social sciences and humanities 9000 Health sciences > 9000 Health sciences |
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Department: | Institut de génie biomédical |
Funders: | Canadian Institutes of Health Research (CIHR) |
Grant number: | 8827 |
PolyPublie URL: | https://publications.polymtl.ca/3568/ |
Journal Title: | Frontiers in Aging Neuroscience (vol. 10, no. 69) |
Publisher: | Frontiers |
DOI: | 10.3389/fnagi.2018.00069 |
Official URL: | https://doi.org/10.3389/fnagi.2018.00069 |
Date Deposited: | 26 Mar 2020 17:10 |
Last Modified: | 28 Sep 2024 06:57 |
Cite in APA 7: | Martin, C.-O., Pontbriand-Drolet, S., Daoust, V., Yamga, E., Amiri, M., Hubner, L. C., & Ska, B. (2018). Narrative discourse in young and older adults: behavioral and NIRS analyses. Frontiers in Aging Neuroscience, 10(69), 69 (13 pages). https://doi.org/10.3389/fnagi.2018.00069 |
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