Dollyane Muret

Dollyane Muret
French Institute of Health and Medical Research | Inserm · inDev team - NeuroDiderot unit Inserm - NeuroSpin UNIACT CEA

PhD

About

20
Publications
2,601
Reads
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85
Citations
Citations since 2016
16 Research Items
81 Citations
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20162017201820192020202120220510152025
Additional affiliations
May 2018 - February 2022
University College London
Position
  • Research Associate
April 2017 - March 2018
Lyon Neuroscience Research Center
Position
  • PostDoc Position
January 2016 - March 2017
Ruhr-Universität Bochum
Position
  • PostDoc Position
Description
  • Investigating the transfer specificity of somatosensory plasticity and the functional relationship between the hand and the face

Publications

Publications (20)
Article
Full-text available
The hand-face border is one of the most prominent features of the primate somatosensory cortex. A reduction of somatosensory input, following amputation or anesthesia, induces perceptual changes across this border that are explained by plastic competitive mechanisms [1-4]. Whether cross-border plasticity can be induced by learning processes relying...
Article
Full-text available
It is well established that permanent or transient reduction of somatosensory inputs, following hand deafferentation or anesthesia, induces plastic changes across the hand-face border, supposedly responsible for some altered perceptual phenomena such as tactile sensations being referred from the face to the phantom hand. It is also known that trans...
Article
Full-text available
In the primary somatosensory cortex, large-scale cortical and perceptual changes have been demonstrated following input deprivation. Recently, we found that the cortical and perceptual changes induced by repetitive somatosensory stimulation (RSS) at a finger transfer to the face. However, whether such cross-border changes are specific to the face r...
Article
Full-text available
The homunculus in primary somatosensory cortex (S1) is famous for its body part selectivity, but this dominant feature may eclipse other representational features, e.g., information content, also relevant for S1 organization. Using multivariate fMRI analysis, we ask whether body part information content can be identified in S1 beyond its primary re...
Article
Full-text available
Significance Perhaps the most recognizable “sensory map” in neuroscience is the somatosensory homunculus. Although the homunculus suggests a direct link between cortical territory and body part, the relationship is actually ambiguous without a decoder that knows this mapping. How the somatosensory system derives a spatial code from an activation in...
Preprint
Full-text available
Background Some amputees have been prominently reported to perceive touch applied to their face as coming from their phantom hand. These referred sensations have been classically interpreted as the perceptual correlate of cortical remapping of the face into the neighbouring missing- hand territory in primary somatosensory cortex (S1). We investigat...
Preprint
Full-text available
The somatosensory homunculus in primary somatosensory cortex (S1) is topographically organised, with relatively high selectivity to each body part in its primary area. This dominant feature may eclipse other organising principles in S1. Recent multivariate methodologies allow us to identify representational features beyond selectivity, e.g., inform...
Preprint
Full-text available
Cortical remapping after hand loss in the primary somatosensory cortex (S1) is thought to be predominantly dictated by cortical proximity, with adjacent body parts remapping into the deprived area. Traditionally, this remapping has been characterised by changes in the lip representation, which is assumed to be the immediate neighbour of the hand ba...
Poster
Full-text available
The primary somatosensory cortex (hereafter S1) is considered to be highly topographically organised, with relatively high levels of selectivity within each representation along the homunculus. While this organising principle appears to be a dominant feature of S1, it may eclipse other organising principles. Recent neuroimaging methodology (MVPA) a...
Article
While amputation was considered a prominent model for cortical reorganisation, recent evidence highlights persistent representation of the missing hand. We offer a new perspective on the literature of amputation-triggered sensorimotor plasticity, by emphasising the need for homeostasis and emerging evidence of latent activity distributed across the...
Article
Full-text available
The homunculus in primary somatosensory cortex (S1) is famous for its body part selectivity, but this dominant feature may eclipse other representational features, e.g., information content, also relevant for S1 organization. Using multivariate fMRI analysis, we ask whether body part information content can be identified in S1 beyond its primary re...
Chapter
Full-text available
Phantom sensations are experienced by almost every person who has lost their hand in adulthood. This mysterious phenomenon spans the full range of bodily sensations, including the sense of touch, temperature, movement, and even the sense of wetness. For a majority of upper limb amputees, these sensations will also be at times unpleasant, painful, a...
Poster
Full-text available
Arm amputation (due to congenital or acquired loss) is a key model for studying reorganisation in the human brain, but the driving mechanisms, limits and behavioural consequences of these changes are still debated. In particular, it is not clear how topographical relationship and compensatory behaviour interplay in shaping brain reorganisation. Whi...
Poster
Full-text available
It is not well-understood how cortical plasticity translates into perceptual abilities and what are its limits. In the primary somatosensory cortex (SI), large-scale cortical and perceptual changes have been demonstrated following input deprivation. Recently, we found that the cortical and perceptual changes induced by repetitive somatosensory stim...
Conference Paper
Touch plays a fundamental role in our everyday life, and is particularly important because of its strong interaction with the motor system. In addition, the somatosensory and motor cortices are both known to be highly plastic. But while sensorimotor plastic changes have been widely studied following motor training or sensorimotor deprivation, littl...
Poster
Full-text available
A major challenge for neuroscience is to understand the functional relevance of cortical plasticity. Plasticity of the primary somatosensory cortex (SI) following deafferentation (Pons et al, 1991) has been extensively investigated and expansion of the face representation into that of the deprived hand has been correlated with phantom sensations an...
Poster
Full-text available
Today people commonly speak about harnessing the plastic capacity of the adult brain to improve function. Despite the potential impact of this type of adaptive plasticity very little is known about its mechanisms and limits. Plastic changes can be induced in the somatosensory system using repetitive somatosensory stimulation (RSS) protocols that sy...
Poster
Full-text available
It is now well established that cortical plasticity occurs in the adult brain and that plastic phenomena are involved in many brain functions. Understanding the rules governing plasticity and its functional consequences is extremely challenging. A cutaneous coactivation (CA) protocol has been successfully used to study somatosensory plasticity (see...

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Projects

Project (1)
Archived project
The purpose of this project is to investigate the limits of transfer of a training-independent tactile learning across body-parts.