When the wedding march becomes sad : semantic memory impairment for music in the semantic variant of primary progressive aphasia

Auteur(s): Macoir, JoëlBérubé-Lalancette, SarahWilson, Maximiliano AgustinLaforce, Robert, JrHudon, Carol; Gravel, Pierre; Potvin, OlivierDuchesne, SimonMonetta, Laura
Résumé: Music can induce particular emotions and activate semantic knowledge. In the semantic variant of primary progressive aphasia (svPPA), semantic memory is impaired as a result of anterior temporal lobe (ATL) atrophy. Semantics is responsible for the encoding and retrieval of factual knowledge about music, including associative and emotional attributes. In the present study, we report the performance of two individuals with svPPA in three experiments. NG with bilateral ATL atrophy and ND with atrophy largely restricted to the left ATL. Experiment 1 assessed the recognition of musical excerpts and both patients were unimpaired. Experiment 2 studied the emotions conveyed by music and only NG showed impaired performance. Experiment 3 tested the association of semantic concepts to musical excerpts and both patients were impaired. These results suggest that the right ATL seems essential for the recognition of emotions conveyed by music and that the left ATL is involved in binding music to semantics. They are in line with the notion that the ATLs are devoted to the binding of different modality-specific properties and suggest that they are also differentially involved in the processing of factual and emotional knowledge associated with music.
Type de document: Article de recherche
Date de publication: 16 novembre 2016
Date de la mise en libre accès: 29 juin 2020
Version du document: AM
Lien permanent: http://hdl.handle.net/20.500.11794/39608
Ce document a été publié dans: Neurocase, Vol. 22 (6), 486–495 (2016)
https://doi.org/10.1080/13554794.2016.1257025
Oxford University Press
Autre version disponible: 10.1080/13554794.2016.1257025
27849128
Collection :Articles publiés dans des revues avec comité de lecture

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