T Moulin

University of Franche-Comté, Becoinson, Franche-Comté, France

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Publications (138)438.62 Total impact

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    ABSTRACT: Recent studies have evidenced serious difficulties in detecting covert awareness with electroencephalography-based techniques both in unresponsive patients and in healthy control subjects. This work reproduces the protocol design in two recent mental imagery studies with a larger group comprising 20 healthy volunteers. The main goal is assessing if modifications in the signal extraction techniques, training-testing/cross-validation routines, and hypotheses evoked in the statistical analysis, can provide solutions to the serious difficulties documented in the literature. The lack of robustness in the results advises for further search of alternative protocols more suitable for machine learning classification and of better performing signal treatment techniques. Specific recommendations are made using the findings in this work. © EEG and Clinical Neuroscience Society (ECNS) 2014.
    Clinical EEG and neuroscience. 12/2014;
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    ABSTRACT: Almost 1 person in 1000 suffers from stroke annually in France. Health-related quality of life (HRQoL) measurement with specific questionnaires is useful to study the consequences of stroke on patient's daily lives. To validate the French version of the Stroke Impact Scale (SIS) questionnaire, as no disease-specific questionnaire was validated in French heretofore. Two hundred eighty eight patients with stroke were classified in 2 groups (158 acute, 130 chronic). Rate of item completion, test-retest reliability, as well as construct validity, convergent validity and discriminant validity of the questionnaire, and also sensitivity to change were assessed. Acute group patients were recruited during the first month post stroke and followed for 3 months. Chronic group patients (stroke dating from >1 year) were recruited from outpatient consultations. The first 100 chronic patients were called back 15 days after inclusion for test-retest. Barthel index, Hospital Anxiety and Depression Scale (HADS) and Duke Health Profile questionnaires were administered. The French version of the SIS was well accepted by all patients. It had good reproducibility. Cronbach's alpha was >89% for all scales. A ceiling effect was noted in the majority of scales. Physical domains were significantly correlated to other measures of physical capacity (Barthel Index and Duke Health Profile, Spearman coefficients were between 0.5 and 0.73), while the emotional and social domains were significantly correlated to almost all domains of the Duke questionnaire. Psychometric properties were similar to the US version. Responsiveness was good for physical and emotional domains. The French SIS version presents good psychometric properties, except for ceiling effect. This is the first stroke-specific questionnaire evaluating perceived health after stroke to be validated in France, and could be useful for further investigations of HRQoL after stroke. © 2014 American Physical Therapy Association.
    Physical therapy. 12/2014;
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    ABSTRACT: Background: This study aimed to evaluate the clinical symptoms of Angelman syndrome (AS) in adults and to identify the neurological pathways affected in this disease. AS is a neurogenetic disorder resulting due to the deletion or inactivation of the ubiquitin-protein-ligase E3A gene on maternal chromosome 15. Summary: A retrospective analysis of data from six adults patients with clinical, electroencephalographic and genetic confirmation of AS was performed. Movement disorders of the hands and mouth, laughing spells, severe expressive speech disorders, a happy nature, hyposomnia and anxiety are the major neurological characteristics of AS in adulthood. Cerebellar ataxia, muscle hypotonia and tremor, though constant in childhood, tend to be attenuated in adulthood. Epilepsy, one of the most frequent symptoms in childhood and in adulthood, is characterised by specific electroencephalographic patterns. Key Messages: These clinical characteristics are important to improve the clinical awareness and genetic diagnosis of AS. Clinicians must be better informed concerning the adult phenotype as it is not well described in the literature. We stress the importance of AS as one of the main causes of intractable epilepsy. The authors suggest frontal and cerebellar dysfunction. Further functional cerebral imaging studies are necessary. © 2014 S. Karger AG, Basel.
    European neurology. 11/2014; 73(1-2):119-125.
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    ABSTRACT: Background In gradient echo magnetic resonance imaging (MRI), intravascular thrombi (IT) can appear as vascular susceptibility artifacts, linked to local presence of intra-arterial deoxyhaemoglobin, and called susceptibility vessel signs (SVS).AimsOur objectives were to evaluate the sensitivity of susceptibility-weighted sequences, such as T2* weighted angiography (SWAN) in the visualization of SVS compared with T2*, to consider whether it enabled a better understanding of the importance of SVS, and to compare cerebral circulation regulation profiles according to the localization of the SVS (i.e. proximal or distal).Methods We prospectively studied the clinical and imaging data of 78 consecutive patients admitted for acute cerebral ischemia to the stroke unit of Besançon University Hospital between 1 April 2009 and 31 January 2010.ResultsAn SVS was visualized in 44/78 (56%) patients using SWAN and in 13/78 (16%) patients using T2*. All the SVS visible using T2* were also visible on the SWAN. The inter-observer kappa score was 0·72 [CI (0·53–0·91)] for T2*, 0·72 [CI (0·57–0·87)] for SWAN, and weighted kappa was 0·77 [CI (0·61–0·92)] for both T2* and SWAN. When an MCA occlusion was visible on MRA imaging (22/78 patients), a SVS was visualized in 7/22 cases (31·8%) using T2* and in 20/22 cases (91%) using SWAN. When the occlusion was visible in the M1 or M2 segments (17/78 patients), an SVS was visualized in 6/17 cases (35·3%) using T2* and in 15/17 cases (88·2%) using SWAN. When the occlusion was visible in the M3 segment (5/78 patients), an SVS was visualized in 1/5 cases (20%) using T2* and in 5/5 cases (100%) using SWAN. Presence of SVS was not associated with cardioembolic etiology of the stroke.ConclusionsSWAN was more sensitive than T2* in the visualization of SVS in the intracranial arteries during the acute phase of ischemic stroke. Our study shows that the low number of SVS visualized using T2* in previous studies is probably related to a lack of sensitivity of the sequence, rather than to the nature or age of the thrombus. The greater sensitivity of SWAN seems to be linked to the visualization of SVS in cases of small thrombi.
    International Journal of Stroke 11/2014; · 4.03 Impact Factor
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    ABSTRACT: The logopenic variant of primary progressive aphasia is a syndrome with neuropsychological and linguistic specificities, including phonological loop impairment for which diagnosis is currently mainly based on the exclusion of the two other variants, semantic and nonfluent/agrammatic primary progressive aphasia. The syndrome may be underdiagnosed due (1) to mild language difficulties during the early stages of the disease or (2) to being mistaken for mild cognitive impairment or Alzheimer's disease when the evaluation of episodic memory is based on verbal material and (3) finally, it is not uncommon that the disorders are attributed to psychiatric co-morbidities such as, for example, anxiety. Moreover, compared to other variants of primary progressive aphasia, brain abnormalities are different. The left temporoparietal junction is initially affected. Neuropathology and biomarkers (cerebrospinal fluid, molecular amyloid nuclear imaging) frequently reveal Alzheimer's disease. Consequently this variant of primary progressive aphasia does not fall under the traditional concept of frontotemporal lobar degeneration. These distinctive features highlight the utility of correct diagnosis, classification, and use of biomarkers to show the neuropathological processes underlying logopenic primary progressive aphasia. The logopenic variant of primary progressive aphasia is a specific form of Alzheimer's disease frequently presenting a rapid decline; specific linguistic therapies are needed. Further investigation of this syndrome is needed to refine screening, improve diagnostic criteria and better understand the epidemiology and the biological mechanisms involved. Copyright © 2014 Elsevier Masson SAS. All rights reserved.
    Revue Neurologique 10/2014; · 0.51 Impact Factor
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    ABSTRACT: We aimed at comparing the long-term benefit-risk balance of carotid stenting versus endarterectomy for symptomatic carotid stenosis.
    07/2014;
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    ABSTRACT: Hysteria has generated the most heated debates among physicians, from antiquity to the present day. It has been long confused with neuroses and neurological pathologies such as Parkinson's disease and epilepsy, principally associated with women and sexual disorders. The clinical manifestations must first be seen in their historical context, as interpretation varies according to the time period. Recently, the Diagnostic and Statistical Manual of Mental Disorders by the American Psychiatric Association marked a break in the consensus that previously seemed to apply to the concept of hysteria and approach to the clinical manifestations. The clinical manifestations of hysteria are numerous and multifaceted, comprising 3 main classifications: paroxysms, attacks, and acute manifestations; long-lasting functional syndromes, and visceral events. Each main classification can be subdivided into several subgroups. The first main group of paroxysms, attacks, and acute manifestations includes major hysterical attacks, such as prodrome, trance and epileptic states, minor hysterical attacks such as syncope and tetany, twilight states, paroxysmal amnesia, and cataleptic attacks. The second group includes focal hysterical symptoms, paralyses, contractures and spasms, anesthesia, and sensory disorders. Visceral manifestations can be subdivided into spasms, pain, and general and trophic disorders. The diversity of the symptoms of hysteria and its changing clinical presentation calls into question the same hysterical attacks and the same symptoms, which have had only a few differences for over 2,000 years. A new definition of hysteria should be proposed, in that it is a phenomenon that is not pathological, but physiological and expressional. © 2014 S. Karger AG, Basel.
    Frontiers of neurology and neuroscience 01/2014; 35:28-43.
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    ABSTRACT: Background The clinical benefit of preventive eradication of unruptured brain arteriovenous malformations remains uncertain. A Randomised trial of Unruptured Brain Arteriovenous malformations (ARUBA) aims to compare the risk of death and symptomatic stroke in patients with an unruptured brain arteriovenous malformation who are allocated to either medical management alone or medical management with interventional therapy. Methods Adult patients (≥18 years) with an unruptured brain arteriovenous malformation were enrolled into this trial at 39 clinical sites in nine countries. Patients were randomised (by web-based system, in a 1:1 ratio, with random permuted block design [block size 2, 4, or 6], stratified by clinical site) to medical management with interventional therapy (ie, neurosurgery, embolisation, or stereotactic radiotherapy, alone or in combination) or medical management alone (ie, pharmacological therapy for neurological symptoms as needed). Patients, clinicians, and investigators are aware of treatment assignment. The primary outcome is time to the composite endpoint of death or symptomatic stroke; the primary analysis is by intention to treat. This trial is registered with ClinicalTrials.gov, number NCT00389181. Findings Randomisation was started on April 4, 2007, and was stopped on April 15, 2013, when a data and safety monitoring board appointed by the National Institute of Neurological Disorders and Stroke of the National Institutes of Health recommended halting randomisation because of superiority of the medical management group (log-rank Z statistic of 4·10, exceeding the prespecified stopping boundary value of 2·87). At this point, outcome data were available for 223 patients (mean follow-up 33·3 months [SD 19·7]), 114 assigned to interventional therapy and 109 to medical management. The primary endpoint had been reached by 11 (10·1%) patients in the medical management group compared with 35 (30·7%) in the interventional therapy group. The risk of death or stroke was significantly lower in the medical management group than in the interventional therapy group (hazard ratio 0·27, 95% CI 0·14–0·54). No harms were identified, other than a higher number of strokes (45 vs 12, p<0·0001) and neurological deficits unrelated to stroke (14 vs 1, p=0·0008) in patients allocated to interventional therapy compared with medical management. Interpretation The ARUBA trial showed that medical management alone is superior to medical management with interventional therapy for the prevention of death or stroke in patients with unruptured brain arteriovenous malformations followed up for 33 months. The trial is continuing its observational phase to establish whether the disparities will persist over an additional 5 years of follow-up. Funding National Institutes of Health, National Institute of Neurological Disorders and Stroke.
    The Lancet 01/2014; 383(9917):614–621. · 39.21 Impact Factor
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    ABSTRACT: Flavors guide consumers' choice of foodstuffs, preferring those that they like and meet their needs, and dismissing those for which they have a conditioned aversion. Flavor affects the learning and consumption of foods and drinks; what is already well-known is favored and what is new is apprehended. The flavor of foodstuffs is also crucial in explaining some eating behaviors such as overconsumption. The "blind" taste test of wine is a good model for assessing the ability of people to convert mouth feelings into flavor. To determine the relative importance of memory and sensory capabilities, we present the results of an fMRI neuro-imaging study involving 10 experts and 10 matched control subjects using wine as a stimulus in a blind taste test, focusing primarily on the assessment of flavor integration. The results revealed activations in the brain areas involved in sensory integration, both in experts and control subjects (insula, frontal operculum, orbitofrontal cortex, amygdala). However, experts were mainly characterized by a more immediate and targeted sensory reaction to wine stimulation with an economic mechanism reducing effort than control subjects. Wine experts showed brainstem and left-hemispheric activations in the hippocampal and parahippocampal formations and the temporal pole, whereas control subjects showed activations in different associative cortices, predominantly in the right hemisphere. These results also confirm that wine experts work simultaneously on sensory quality assessment and on label recognition of wine.
    Frontiers in Behavioral Neuroscience 01/2014; 8:358. · 4.76 Impact Factor
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    Clinical EEG and neuroscience; 12/2013
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    Clinical EEG and neuroscience: official journal of the EEG and Clinical Neuroscience Society (ENCS) 12/2013; 44(4):E1-121. · 1.82 Impact Factor
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    ABSTRACT: Although the cerebral networks involved in sensory perception are of general interest in neuroscience, registration of the effects of olfactory stimulation, especially in a magnetic resonance imaging (MRI) environment, presents particular problems and constraints. This article presents details of a reliable and portable system for olfactory stimulation that is modular in design and based on microcontroller technology. It has the following characteristics: (1) It is under software control; (2) the presentation of olfactory stimulation can be synchronized with respiration; (3) it can be manually controlled; and (4) it is fully compatible with an MRI environment. The principle underlying this system is to direct an odor to the subject's nostrils by switching airflow to different odor diffusers. The characteristics of this system were established using (1) ultraviolet (UV) spectroscopy, to measure its response time, and (2) gas chromatography, to measure the repeatability of odor presentation in terms of gas concentration. A response time of 200 ± 25 ms was obtained for the system, and the standard deviations of the gas concentration delivered during stimulation ranged from 1.5% to 22%, depending on the odor, the airflow, and the dilution of the odor used. Since it is portable, controlled by software, and reliable, on the basis of the results we obtained, this system will lend itself to a wide range of applications in olfactory neuroscience.
    Behavior Research Methods 06/2013; · 2.12 Impact Factor
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    International Journal of Stroke 06/2013; 8(4):E11. · 4.03 Impact Factor
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    ABSTRACT: Introduction L’accident vasculaire cérébral (AVC) est une pathologie aiguë largement évitable, avec un délai d’action réduit pour limiter les dommages au cerveau. La gestion efficace des facteurs de risque à long terme peut réduire le risque de récidive, mais les mesures de prévention secondaires sont souvent insatisfaisantes chez les victimes d’AVC. La télémédecine et notamment le télé-AVC, peuvent fournir des services de soins de santé importants et nécessaires pour les victimes d’AVC. Bien que la télémédecine s’utilise principalement pour la thrombolyse à la phase aiguë, elle peut potentiellement traiter la phase suivant la sortie de l’hôpital ou de l’établissement de réadaptation de la victime d’AVC. Dans cet article, nous examinons les données actuelles concernant la prévention et la limitation des dommages graves au cerveau découlant d’un infarctus cérébral, mais aussi nous envisageons d’autres domaines de prise en charge de l’AVC où la télémédecine peut jouer un rôle potentiel. Cet article examine donc l’utilisation du télé-AVC chez les victimes d’AVC après la sortie de l’hôpital, en mettant l’accent sur les modèles de soins et de leur applicabilité. Méthodes Nous disposions de 22 études provenant de l’analyse documentaire de l’Agence canadienne des médicaments et des technologies de la santé (ACMTS), et nous avons également cherché dans la littérature pour les articles traitant de la télémédecine chez les victimes d’AVC. Les résultats ont été examinés à partir des résumés. Les recherches concernaient la période de 1998 à 2009, sans aucune restriction. Les bases de données consultées étaient Medline EMBASE, CINAHL, AMED, PsycInfo et Cochrane. Les principaux termes utilisés étaient la télémédecine, le téléphone, le courrier électronique, la vidéoconférence et l’AVC. Résultats Nous avons trouvé 82 articles, dont 72 ont été retenus pour l’examen. Dans huit études, dont six étaient des essais contrôlés randomisés (ECR), l’objet principal n’était pas la télé-rééducation. La télé-rééducation a fait l’objet de 12 autres études, dont une seule est un ECR. Vingt-huit études ont évalué diverses mesures chez les patients atteints d’un AVC. Parmi les études de télé-AVC ne concernant pas la rééducation chez les survivants d’un AVC, celles-ci comprennent notamment les modèles de l’éducation sur Internet, la gestion passive des cas, l’éducation par visioconférence, et un modèle de soutien téléphonique des soins infirmiers. Il existe 21 autres études (dont un ECR) décrivant l’application du télé-AVC en réadaptation. Conclusion Il existe un besoin urgent, en particulier dans les zones rurales et mal desservies, de développer des systèmes de gestion à long terme chez les victimes d’AVC qui soient intégrés et durables. Dans ces zones, la mise en œuvre de la télémédecine peut limiter les lacunes dans la prestation des soins de santé créées par la pénurie critique des professionnels de santé et la distance géographique. La gestion à long terme des facteurs de risque chez les victimes d’AVC incombe au médecin traitant ou à un autre professionnel de santé. Malheureusement, l’inertie thérapeutique est commune au niveau des soins primaires. Pour y remédier, une combinaison du modèle « hub and spoke » et du modèle linéaire pourrait être avantageuse. Le télé-AVC peut aussi réduire les variations inappropriées dans la pratique médicale.
    European Research in Telemedicine / La Recherche Européenne en Télémédecine. 06/2013; 2(2):57–67.
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    ABSTRACT: Background: Logopenic variant of primary progressive aphasia (LPPA) is classically considered as an isolated language disorder, but verbal short-term memory deficit induces difficulties in neuropsychological tests that are not intended to evaluate language. Objective: The aim of this study is to describe the initial symptoms and neuropsychological profiles of LPPA. Methods: A retrospective study was conducted with a series of 20 consecutive patients diagnosed with LPPA. Clinical, neuroimaging, neuropsychological, and linguistic examinations are reported. The first neuropsychological examinations (mean time between neuropsychological assessment and diagnosis: 11 months) were then compared to 20 patients with mild cognitive impairment (MCI) and 20 patients with Alzheimer's disease (AD) matched by age, gender, and education level. Results: A recent onset or aggravation of anxiety disorders was frequently reported. An unusual neuropsychological profile, different from that of AD or MCI, was observed: dissociation between verbal and visual memory performances, poor encoding performances on verbal memory tests, and preserved orientation to time, difficulties with mental calculation and fluency tasks. Biparetal abnormality and left hippocampal diaschisis was frequently observed. Asymptomatic dopaminergic depletion was observed in four patients. Conclusion: Our study identifies that de novo or recently worsening anxiety and specific neuropsychological profiles call for screening for LPPA, including a linguistic examination. Sometimes, there may be a continuum between LPPA and corticobasal syndrome.
    Journal of Alzheimer's disease: JAD 05/2013; · 4.17 Impact Factor
  • Revue Neurologique 04/2013; 169:A132-A133. · 0.51 Impact Factor
  • Movement Disorders 03/2013; · 5.63 Impact Factor
  • Pierre Simon, Thierry Moulin
    European Research in Telemedicine / La Recherche Européenne en Télémédecine. 03/2013; 2(1):1–4.
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    ABSTRACT: This study investigated the brain areas involved in episodic memory retrieval of pictures depending on the characteristics of the contextual environment during encoding (i.e. presence or absence of an odor). In the first stage, subjects were presented with a series of 32 pictures. Half of the pictures were presented while the subjects smelled an odor (vanillin). No particular odor was associated with the presentation of the other half of the pictures. Two weeks later, a retrieval task was performed in which the same pictures were presented during an fMRI session but without any odor association involved. The results show that both conditions activate a common episodic memory network including the hippocampal formation. Compared with the "encoding without odor" condition, the "encoding with odor" condition shows greater activations in temporal, parietal and frontal cortices, notably within the area of the orbitofrontal cortex which constitutes a main site of the secondary olfactory cortex. No activated areas were observed in the inverse contrast. These results highlight the complexity of the networks involved in episodic memory according to the context during encoding.
    Brain Imaging and Behavior 01/2013; · 2.67 Impact Factor
  • Revue Neurologique 12/2012; 168(12):987–988. · 0.51 Impact Factor

Publication Stats

2k Citations
438.62 Total Impact Points

Institutions

  • 1997–2014
    • University of Franche-Comté
      • • Laboratoire de Neurosciences Intégratives et Cliniques
      • • Laboratoire de Neurosciences de Besançon
      • • UFR des Sciences Médicales et Pharmaceutiques
      Becoinson, Franche-Comté, France
  • 1994–2012
    • Centre Hospitalier Régional et Universitaire de Besançon
      Becoinson, Franche-Comté, France
  • 2007
    • Société Française de Cardiologie
      Lutetia Parisorum, Île-de-France, France
  • 2004
    • Centre Hospitalier Régional Universitaire de Lille
      • Division of Neurology
      Lille, Nord-Pas-de-Calais, France
  • 1999
    • University Joseph Fourier - Grenoble 1
      Grenoble, Rhône-Alpes, France
  • 1993
    • University Hospital of Lausanne
      • Service de neurologie
      Lausanne, Vaud, Switzerland