Marianne Chapleau

Marianne Chapleau
University of California, San Francisco | UCSF · Department of Neurology

PhD Clinical Neuropsychology

About

24
Publications
1,505
Reads
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129
Citations
Additional affiliations
September 2014 - present
Université de Montréal
Position
  • PhD Student

Publications

Publications (24)
Article
Background/Objectives. Alzheimer’s disease (AD) and semantic dementia (SD) have distinct episodic memory profiles despite the hippocampal atrophy that characterizes both diseases. The aim of this study was to delineate the pattern of gray matter (GM) atrophy associated with AD and SD as well as any differences in these patterns by pooling together...
Article
The goal of the study was to determine whether the semantic variant of primary progressive aphasia (svPPA) affects the intrinsic connectivity network anchored to left and right anterior hippocampus, but spares the posterior hippocampus. A resting‐state functional connectivity MRI (rs‐fcMRI) study was conducted in a group of patients with svPPA and...
Article
Full-text available
Background Increasing evidence shows that the semantic variant of primary progressive aphasia (svPPA) is characterized by hippocampal atrophy. However, less is known about disease-related morphological hippocampal changes. The goal of the present study is to conduct a detailed characterization of the impact of svPPA on global hippocampus volume and...
Article
Imaging of amyloid deposition using PET has been available in research studies for 2 decades and has been approved for clinical use by the U.S. Food and Drug Administration, the European Medicines Agency, and other regulatory agencies around the world. Amyloid PET is a crucial tool for the diagnosis of Alzheimer disease, as it allows the noninvasiv...
Article
BACKGROUND Mindfulness, defined as non-judgmental awareness of the present moment, has been associated with an array of mental and physical health benefits. Mindfulness may also represent a protective factor for Alzheimer’s disease (AD). Here, we tested the potential protective effect of trait mindfulness on cognitive decline and AD pathology in ol...
Conference Paper
Mindfulness refers to the ability to engage in non‐judgmental awareness of the present moment. This psychological trait is gaining increased attention in both scientific and general public settings, given its association with an array of health benefits. While psychological traits such as depression, anxiety, and neuroticism have been associated wi...
Conference Paper
The pattern of tau‐PET deposition might not always follow the classical post‐mortem Braak stages (Vogel et al, 2020). Yet, most current studies use a temporal meta‐ROI to calculate tau‐PET abnormality. We assessed inter‐individual patterns of tau binding across the spectrum of late‐onset Alzheimer’s disease (AD). We computed a score representing th...
Preprint
Full-text available
BACKGROUND AND OBJECTIVES Mindfulness, defined as non-judgmental awareness of the present moment, has been associated with an array of mental and physical health benefits, including improved cognitive functioning and changes to brain structure and function. Mindfulness may also represent a protective factor for Alzheimer’s disease (AD). Here, we te...
Thesis
L’augmentation de la prévalence des démences est un problème majeur d’intérêt international. À la différence du vieillissement normal, la démence désigne l’affaiblissement progressif de l’ensemble des fonctions intellectuelles : mémoire, attention, jugement, capacité de raisonnement et les perturbations de conduite qui en résultent. Mondialement, o...
Article
Patients with Alzheimer's disease (AD)and semantic variant primary progressive aphasia (svPPA)can present with similar language impairments, mainly in naming. It has been hypothesized that these deficits are associated with different brain mechanisms in each disease, but no previous study has used a network approach to explore this hypothesis. The...
Article
Full-text available
High angular resolution diffusion imaging (HARDI)-based tractography has been increasingly used in longitudinal studies on white matter macro- and micro-structural changes in the language network during language acquisition and in language impairments. However, test-retest reliability measurements are essential to ascertain that the longitudinal va...
Article
While the semantic variant of primary progressive aphasia (svPPA) is characterized by a predominant semantic memory impairment, episodic memory impairments are the clinical hallmark of Alzheimer's disease (AD). However, AD patients also present with semantic deficits, which are more severe for semantically unique entities (e.g. a famous person) tha...
Article
Full-text available
Cognitive and computational models of reading aloud agree on the existence of two procedures for reading. Pseudowords (e.g., atendier) are correctly read through subword processes only while exception words (e.g., pint) are only correctly read via whole-words processes. Regular words can be correctly read by means of either way. Previous behavioral...
Article
Background: Successful reading can be achieved by means of two different procedures: sub-word processes for the pronunciation of words without semantics or pseudowords (PW) and whole-word processes that recruit word-specific information regarding the pronunciation of words with atypical orthography-to-phonology mappings (exception words, EW). Metho...

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