La batterie d'évaluation des connaissances sémantiques du GRECO (BECS-GRECO) : validation et données normatives

Merck, Catherine; Charnallet, Annik; Auriacombe, Sophie; Belliard, Serge; Hahn-Barma, Valérie; Kremin, Helgard; Lemesle, B.; Mahieux, Florence; Moreaud, Olivier; Palisson, Danièle Perrier; Roussel, Martine; Sellal, François; Siegwart, Hervine

doi:10.3917/rne.034.0235

Cited by 42 publications

(33 citation statements)

References 25 publications

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“…A series of individual tests or batteries of tests tapping semantic (i.e., context‐free) memory was used to extensively assess Patient KA's abilities. The BECS‐GRECO battery (Merck et al, ) is a French battery of five tests assessing semantic knowledge about objects, either living entities ( n = 20) or manufactured objects ( n = 20), matched on various dimensions and presented in both verbal (words) and visual (line drawings) modalities. The Mill Hill Vocabulary test (Raven, Court, & Raven, ) is a well‐known graded‐difficulty test requiring participants to select the correct synonym for each of 44 words (only Part B was administered) from a list of six alternatives.…”

Section: Semantic Memory Retrievalmentioning

confidence: 99%

Superior explicit memory despite severe developmental amnesia: In‐depth case study and neural correlates

et al. 2018

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The acquisition of new semantic memories is sometimes preserved in patients with hippocampal amnesia. Robust evidence for this comes from case reports of developmental amnesia suggesting that low-to-normal levels of semantic knowledge can be achieved despite compromised episodic learning. However, it is unclear whether this relative preservation of semantic memory results from normal acquisition and retrieval or from residual episodic memory, combined with effortful repetition. Furthermore, lesion studies have mainly focused on the hippocampus itself, and have seldom reported the state of structures in the extended hippocampal system. Preserved components of this system may therefore mediate residual episodic abilities, contributing to the apparent semantic preservation. We report an in-depth study of Patient KA, a 27-year-old man who had severe hypoxia at birth, in which we carefully explored his residual episodic learning abilities. We used novel speeded recognition paradigms to assess whether KA could explicitly acquire and retrieve new context-free memories. Despite a pattern of very severe amnesia, with a 44-point discrepancy between his intelligence and memory quotients, KA exhibited normal-to-superior levels of knowledge, even under strict time constraints. He also exhibited normal-to-superior recognition memory for new material, again under strict time constraints. Multimodal neuroimaging revealed an unusual pattern of selective atrophy within each component of the extended hippocampal system, contrasting with the preservation of anterior subhippocampal cortices. A cortical thickness analysis yielded a pattern of thinner but also thicker regional cortices, pointing toward specific temporal lobe reorganization following early injury. We thus report the first case of superior explicit learning and memory in a severe case of amnesia, raising important questions about how such knowledge can be acquired.

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Section: Semantic Memory Retrievalmentioning

confidence: 99%

Superior explicit memory despite severe developmental amnesia: In‐depth case study and neural correlates

et al. 2018

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“…They had no cognitive impairment as assessed with the Mini Mental State Examination (Folstein et al 1975) and the Frontal Assessment Battery (Dubois et al 2000). They all underwent a French verbal semantic matching test adapted from the word-written version of the PPT test (Merck et al 2011) and showed no impairment. The experiment was approved by the local ethics committee.…”

Section: Methodsmentioning

confidence: 99%

Anterior temporal lobe morphometry predicts categorization ability

Garcin

Urbanski

Schotten

et al. 2017

Preprint

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Highlights• Anterior temporal lobe morphometry correlates with categorization performances• Semantic is associated with a more rostral temporal region than shape categorization• Semantic categorization performances are associated with right temporal connections . CC-BY 4.0 International license peer-reviewed) is the author/funder. It is made available under a The copyright holder for this preprint (which was not . http://dx.doi.org/10.1101/214965 doi: bioRxiv preprint first posted online Nov. 7, 2017; 2 AbstractCategorization is the mental operation by which the brain classifies objects and events. It is classically assessed using semantic and non-semantic matching or sorting tasks. These tasks show a high variability in performance across healthy controls and the cerebral bases supporting this variability remain unknown. In this study we performed a voxel-based morphometry study to explore the relationships between semantic and shape categorization tasks and brain morphometric differences in 50 controls. We found significant correlation between categorization performance and the volume of the grey matter in the right anterior middle and inferior temporal gyri. Semantic categorization tasks were associated with more rostral temporal regions than shape categorization tasks. A significant relationship was also shown between white matter volume in the right temporal lobe and performance in the semantic tasks. Tractography revealed that this white matter region involved several projection and association fibers, including the arcuate fasciculus, inferior fronto-occipital fasciculus, uncinate fasciculus, and inferior longitudinal fasciculus. These results suggest that categorization abilities are supported by the anterior portion of the right temporal lobe and its interaction with other areas.

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“…This suggests that the items that failed in one task were not systematically the same in the other task. Her performance was also severely deficient in verbal and nonverbal associative knowledge tasks (word/picture from the BECS GRECO, the "Batterie d'évaluation des connaissances sémantiques du groupe de réflexion sur les évaluations cognitives") (Merck et al, 2011), where a target word/picture had to be matched with another one from two. For example, she matched a "turtle" with an "acorn" (and not with the target "salad").…”

Section: Semantic Assessmentmentioning

confidence: 99%

“…The patient had difficulty to discriminate between real and unreal animals, with a clear tendency to consider nonexisting animals as real. As a further assessment of object recognition, we also administered a test of identity matching (BECS-GRECO (Merck et al, 2011)) measuring the ability to classify two visually different forms of an object as the same object, ability known to be vulnerable to semantic impairment (Ikeda, Patterson, Graham, Lambon Ralph, & Hodges, 2006). In this task, M.T.…”

Section: Semantic Assessmentmentioning

confidence: 99%

Impairment of semantic memory after basal forebrain and fornix lesion

et al. 2014

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Semantic memory impairment is classically associated with lesion of the anterior temporal lobe. We report the case of a patient with severe semantic knowledge impairment and anterograde amnesia after bilateral ischemic lesion of the fornix and of the basal forebrain following surgical clipping of an aneurysm of the anterior communicating artery. Fluorodeoxyglucose positron emission tomography (FDG-PET) showed a temporal hypometabolism. Severe semantic impairment is a rare complication after rupture of an anterior communicating artery aneurysm and may result from disconnection of the temporal lobe.

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La batterie d'évaluation des connaissances sémantiques du GRECO (BECS-GRECO) : validation et données normatives

Cited by 42 publications

References 25 publications

Superior explicit memory despite severe developmental amnesia: In‐depth case study and neural correlates

Superior explicit memory despite severe developmental amnesia: In‐depth case study and neural correlates

Anterior temporal lobe morphometry predicts categorization ability

Impairment of semantic memory after basal forebrain and fornix lesion

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