Skip to Main content Skip to Navigation
Master Thesis

L'accès aux connaissances sémantiques chez les patients cérébrolésés frontaux via une épreuve de définition de mots

Abstract : Frontal lobe lesions often reveal significant cognitive impairment, including semantic memory deficit. This is suggested by the frontal lobe injured patients’ results, specifically in the verbal fluency tests. However, those would not be linked to the deficit of semantic knowledge storage, but to a knowledge access impairment. This is our major hypothesis. Thus, this study aims to review the ability of the patients with frontal lobe injury to access to the semantic representations through a word definition task. By means of the formulation of different grades, such task enables a better analysis, allowing resort to more semantic characteristics and their networks and also exploring different categories of items. We proposed it to 10 patients and 9 non-injured participants. If our main hypothesis is only partially approved, we could notice some interesting effects, in favour of an access deficit : less characteristic produced on high frequency items, namely reversal of the standard word frequency effect and difficulties to produced commons characteristics, most probably in relation to focalised attention impairment. In this way, we think that sensitivity of the tasks we used may be improved, because of their relevance in the semantic memory assessment of patients with frontal lobe injury.
Complete list of metadatas

Cited literature [82 references]  Display  Hide  Download

https://dumas.ccsd.cnrs.fr/dumas-01373836
Contributor : Muriel Pelletier-Guichard <>
Submitted on : Thursday, September 29, 2016 - 11:53:07 AM
Last modification on : Tuesday, April 14, 2020 - 12:16:31 PM
Long-term archiving on: : Friday, December 30, 2016 - 12:47:57 PM

Identifiers

  • HAL Id : dumas-01373836, version 1

Citation

Suzanne Ollier de Marichard. L'accès aux connaissances sémantiques chez les patients cérébrolésés frontaux via une épreuve de définition de mots. Sciences cognitives. 2016. ⟨dumas-01373836⟩

Share

Metrics

Record views

100

Files downloads

255