Browsing Faculté des arts et des sciences – Département de psychologie - Travaux et publications by Author "Vallet, Guillaume"
Now showing items 1-8 of 8
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Alzheimer’s disease and memory strength : gradual decline of memory traces as a function of their strength
Langlois, Roxane; Benoit, Sophie; Rouleau, Isabelle; Vallet, Guillaume; Joubert, Sven; Barbeau, Emmanuel J. (2016-03-29)Objective : Episodic memory impairment is at the core of amnestic mild cognitive impair- ment (aMCI) and Alzheimer ’ s disease (AD). The origin of memory deficits may result either from an encoding deficit or from an accelerated decline of the ... -
Amyloid burden and white matter hyperintensities mediate age-related cognitive differences
Sévigny Dupont, Pénélope; Bocti, Christian; Joannette, Maude; Lavallée, Marie Maxime; Nikelski, Jim; Vallet, Guillaume; Chertkow, Howard; Joubert, Sven (Elsevier, 2019-08)This study examined the additive versus synergistic contribution of beta-amyloid (Aβ) and white matter hyperintensities (WMHs) across 7 cognitive domains in 104 cognitively normal older adults. It also measured the extent to which age-related differences ... -
Comprehension of concrete and abstract words in semantic variant primary progressive aphasia and Alzheimer’s disease: a behavioral and neuroimaging study
Joubert, Sven; Vallet, Guillaume; Montembeault, Maxime; Boukadi, Mariem; Wilson, Maximiliano A.; Laforce, Robert Jr.; Rouleau, Isabelle; Brambati, Simona Maria (2017-04-20)The aim of this study was to investigate the comprehension of concrete, abstract and abstract emotional words in semantic variant primary progressive aphasia (svPPA), Alzheimer’s disease (AD), and healthy elderly adults (HE) Three groups of participants ... -
Education as a moderator of the relationship between episodic memory and amyloid load in normal aging
Joannette, Maude; Bocti, Christian; Sévigny Dupont, Pénélope; Lavallée, Marie Maxime; Nikelski, Jim; Vallet, Guillaume; Chertkow, Howard; Joubert, Sven (Oxford University Press, 2019-10-23)The current study explored whether education, a proxy of cognitive reserve, modifies the association between episodic memory (EM) performance and βeta-amyloid load (Aβ), a biomarker of Alzheimer’s disease, in a cohort of cognitively normal older ... -
Norms of concept familiarity and emotional valence for 3,596 French nouns and their contribution in lexical decision
Chedid, Georges; Wilson, Maximiliano A.; Bedetti, Christophe; Rey, Amandine E.; Vallet, Guillaume; Brambati, Simona Maria (Springer, 2018-08-20)In the last decade, research has shown that word processing is influenced by the lexical and semantic features of words. However, norms for a crucial semantic variable-that is, conceptual familiarity-have not been available for a sizeable French database. ... -
Posterior cortical atrophy : impact on daily living activities and exploration of a cognitive rehabilitation approach
Bier, Nathalie; El-Samra, Ali; Bottari, Carolina; Vallet, Guillaume; Carignan, Mathieu; Paquette, Guillaume; Brambati, Simona Maria; Demers, Louise; Génier-Marchand, Daphné; Rouleau, Isabelle (Cogent OA, 2019-07-11)Posterior cortical atrophy (PCA) is a neurodegenerative disease affecting the posterior region of the brain. Little is known about both the impact of PCA on functioning and how to support patients on a daily basis. The purpose of this study was to ... -
A qualitative impairment in face perception in Alzheimer’s disease : evidence from a reduced face inversion effect
face inversion effect in Alzheimer’s disease
Lavallée, Marie Maxime; Gandini, Delphine; Rouleau, Isabelle; Vallet, Guillaume; Joannette, Maude; Kergoat, Marie-Jeanne; Busigny, Thomas; Rossion, Bruno; Joubert, Sven (2016-04-12)Prevalent face recognition difficulties in Alzheimer’s disease (AD) have typically been attributed to the underlying episodic and semantic memory impairment. The aim of the current study was to determine if AD patients are also impaired at the perceptual ... -
Visual and auditory perceptual strength norms for 3,596 French nouns and their relationship with other psycholinguistic variables
Chedid, Georges; Brambati, Simona Maria; Bedetti, Christophe; Rey, Amandine E.; Wilson, Maximiliano A.; Vallet, Guillaume (Springer, 2019-04-23)Perceptual experience plays a critical role in the conceptual representation of words. Higher levels of semantic variables such as imageability, concreteness, and sensory experience are generally associated with faster and more accurate word processing. ...