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Merck C, Noël A, Jamet E, Robert M, Salmon A, Belliard S, Kalénine S. Nonspecific Effects of Normal Aging on Taxonomic and Thematic Semantic Processing. Exp Aging Res 2023; 49:18-40. [PMID: 35234091 DOI: 10.1080/0361073x.2022.2046948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
OBJECTIVE This study aimed to assess the effect of normal aging on the processing of taxonomic and thematic semantic relations. METHOD We used the Visual-World-Paradigm coupled with eye-movement recording. We compared performance of healthy younger and older adults on a word-to-picture matching task in which participants had to identify each target among semantically related (taxonomic or thematic) and unrelated distractors. RESULTS Younger and older participants exhibited similar patterns of gaze fixations in the two semantic conditions. The effect of aging took the form of an overall reduction in sensitivity to semantic competitors, with no difference between the taxonomic and thematic conditions. Moreover, comparison of the proportions of fixations between the younger and older participants indicated that targets were identified equally quickly in both age groups. This was not the case when mouse-click reaction times were analyzed. CONCLUSIONS Findings argue in favor of nonspecific effects of normal aging on semantic processing that similarly affect taxonomic and thematic processing. There are important clinical implications, as pathological aging has been repeatedly shown to selectively affect either taxonomic or thematic relations. Measuring eye-movements in a semantic task is also an interesting approach in the elderly, as these seem to be less impacted by aging than other motor responses.
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Affiliation(s)
- Catherine Merck
- Service de Neurologie, Cmrr Haute Bretagne, Chu Pontchaillou, Rennes, France.,Normandie Univ, Unicaen, Psl Research University, Ephe, Inserm, U1077, Chu de Caen, Neuropsychologie Et Imagerie de la Mémoire Humaine, Caen, France
| | - Audrey Noël
- Univ Rennes, LP3C (Psychology of Cognition, Behavior & Communication Laboratory) - Ea 1285, Rennes, France
| | - Eric Jamet
- Univ Rennes, LP3C (Psychology of Cognition, Behavior & Communication Laboratory) - Ea 1285, Rennes, France
| | - Maxime Robert
- Univ Rennes, LP3C (Psychology of Cognition, Behavior & Communication Laboratory) - Ea 1285, Rennes, France
| | - Anne Salmon
- Service de Neurologie, Cmrr Haute Bretagne, Chu Pontchaillou, Rennes, France
| | - Serge Belliard
- Service de Neurologie, Cmrr Haute Bretagne, Chu Pontchaillou, Rennes, France.,Normandie Univ, Unicaen, Psl Research University, Ephe, Inserm, U1077, Chu de Caen, Neuropsychologie Et Imagerie de la Mémoire Humaine, Caen, France
| | - Solène Kalénine
- Univ. Lille, Cnrs, Chu Lille, Umr 9193 - SCALab - Sciences Cognitives Et Sciences Affectives, Lille, France
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Merck C, Noël A, Jamet E, Robert M, Hou C, Salmon A, Belliard S, Kalénine S. Identification of taxonomic and thematic relationships: Do the two semantic systems have the same status in semantic dementia? J Clin Exp Neuropsychol 2019; 41:946-964. [PMID: 31305211 DOI: 10.1080/13803395.2019.1641186] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Introduction: Disequilibrium between the taxonomic and thematic semantic systems was previously hypothesized in participants with semantic dementia (SD), without rigorously assessing their ability to identify the two types of semantic relationships. Therefore, the aim of the present study was to directly compare the ability of 10 participants with SD, 10 participants with Alzheimer's disease (AD), and 20 controls to identify thematic versus taxonomic relationships. Methods: Participants performed an explicit forced-choice picture-matching task in which they had to determine which of two pictures of choice was semantically related to the target picture. Target pictures could display natural or artifact objects. Each target was presented once with a taxonomically related picture and once with a thematically related picture. Results: Analyses of correct thematic and taxonomic matches as a function of target domain showed that the performance of the two groups of patients differed in the taxonomic conditions but not in the thematic conditions, demonstrating a relative preservation of thematic knowledge in SD. Additional correlation analyses further indicated that the particular status of thematic relationships in SD was even stronger for artifact concepts. Conclusions: Results provide evidence of the heterogeneous nature of semantic knowledge disruption in SD, and could be regarded as being consistent with the existence of two neuroanatomically and functionally distinct semantic systems. Results further stress the relevance of performing a more detailed and complete assessment of semantic performance in participants with SD, in order to capture the impaired but also preserved aspects of their knowledge.
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Affiliation(s)
- Catherine Merck
- Service de neurologie, CMRR Haute Bretagne, CHU Pontchaillou , Rennes , France.,Normandie Univ, UNICAEN, PSL Research University, EPHE, INSERM, U1077, CHU de Caen, Neuropsychologie et Imagerie de la Mémoire Humaine , Caen , France
| | - Audrey Noël
- Université Rennes 2, Laboratoire de Psychologie: Cognition, Comportement et Communication (EA 1285, laboratoire LP3C) , Rennes , France
| | - Eric Jamet
- Université Rennes 2, Laboratoire de Psychologie: Cognition, Comportement et Communication (EA 1285, laboratoire LP3C) , Rennes , France
| | - Maxime Robert
- Université Rennes 2, Laboratoire de Psychologie: Cognition, Comportement et Communication (EA 1285, laboratoire LP3C) , Rennes , France
| | - Camille Hou
- Service de neurologie, CMRR Haute Bretagne, CHU Pontchaillou , Rennes , France
| | - Anne Salmon
- Service de neurologie, CMRR Haute Bretagne, CHU Pontchaillou , Rennes , France
| | - Serge Belliard
- Service de neurologie, CMRR Haute Bretagne, CHU Pontchaillou , Rennes , France.,Normandie Univ, UNICAEN, PSL Research University, EPHE, INSERM, U1077, CHU de Caen, Neuropsychologie et Imagerie de la Mémoire Humaine , Caen , France
| | - Solène Kalénine
- Univ. Lille, CNRS, CHU Lille, UMR 9193 - SCALab - Sciences Cognitives et Sciences Affectives , Lille , France
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