Unite des Troubles du Sommeil

Hôpital-Camfrout, France

Unite des Troubles du Sommeil

Hôpital-Camfrout, France

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De Cock V.C.,Unite des troubles du sommeil | De Cock V.C.,French Institute of Health and Medical Research | Bayard S.,Unite des troubles du sommeil | Bayard S.,French Institute of Health and Medical Research | And 8 more authors.
Movement Disorders | Year: 2012

Diagnosis of restless leg syndrome (RLS) in Parkinson's disease (PD) is difficult because of clinical confounds. The suggested immobilization test (SIT) is validated for diagnosis of primary RLS. This study evaluated the usefulness of the SIT for diagnosis of RLS in PD. We compared SIT scores, as well as polysomnography measures in 50 patients with PD (25 with RLS, 25 without), 25 patients with primary RLS, and 25 age/sex matched controls. Mean leg discomfort score was increased in patients with PD and RLS compared to PD without RLS, and also in patients with primary RLS compared to controls. Leg discomfort was significantly higher at the end of the test in patients with RLS compared to patients without RLS. Intensity of leg discomfort was similar between patients with RLS, with or without PD. Using a mean leg discomfort cutoff of 11, we showed sensitivity of 91% and specificity of 72% for RLS diagnosis in PD during symptomatic time intervals. Periodic leg movements index during the SIT did not differ between groups. Periodic leg movements index during sleep and wakefulness was increased in patients with primary RLS compared to controls, but did not differ between patients with PD, with and without RLS. The sensory SIT is a simple test that may help diagnose RLS in patients with PD. © 2012 Movement Disorder Society.


Bayard S.,Montpellier University | Dauvilliers Y.,Unite des Troubles du Sommeil | Dauvilliers Y.,French Institute of Health and Medical Research | Yu H.,Fudan University | And 7 more authors.
Parkinsonism and Related Disorders | Year: 2014

Introduction: The relationship between ICD and RBD is still not yet understood and the results from the current literature are contradictory in PD. We aimed to explore the association between rapid eye movement (REM) sleep behavior disorder (RBD) and impulse control disorder in Parkinson's disease. Methods: Ninety-eight non-demented patients with Parkinson's disease underwent one night of video-polysomnography recording. The diagnosis of RBD was established according to clinical and polysomnographic criteria. Impulse control disorders were determined by a gold standard, semi-structured diagnostic interview. Results: Half of the patients (n=49) reported clinical history of RBD while polysomnographic diagnosis of RBD was confirmed in 31.6% of the patients (n=31). At least one impulse control disorder was identified in 21.4% of patients, 22.6% with RBD and 20.9% without. Logistic regression controlling for potential confounders indicated that both clinical RBD (OR=0.34, 95% CI=0.07-1.48, P=0.15) and polysomnographic confirmed RBD diagnoses (OR=0.1.28, 95% CI=0.31-5.33, P=0.34) were not associated with impulse control disorder. Conclusion: In Parkinson's disease, REM Sleep Behavior Disorder is not associated with impulse control disorder. The results of our study do not support the notion that PSG-confirmed RBD and ICD share a common pathophysiology. © 2014 Elsevier Ltd.


Cochen De Cock V.,Unite des Troubles du Sommeil | Bayard S.,Unite des Troubles du Sommeil | Jaussent I.,Montpellier University | Charif M.,Service de Neurologie | And 9 more authors.
PLoS ONE | Year: 2014

Background: Excessive daytime sleepiness is a frequent complaint in Parkinson's disease (PD); however the frequency and risk factors for objective sleepiness remain mostly unknown. We investigated both the frequency and determinants of self-reported and objective daytime sleepiness in patients with Parkinson's disease (PD) using a wide range of potential predictors. Methods: One hundred and thirty four consecutive patients with PD, without selection bias for sleep complaint, underwent a semi-structured clinical interview and a one night polysomnography followed by a multiple sleep latency test (MSLT). Demographic characteristics, medical history, PD course and severity, daytime sleepiness, depressive and insomnia symptoms, treatment intake, pain, restless legs syndrome, REM sleep behaviour disorder, and nighttime sleep measures were collected. Self-reported daytime sleepiness was defined by an Epworth Sleepiness Scale (ESS) score above 10. A mean sleep latency on MSLT below 8 minutes defined objective daytime sleepiness. Results: Of 134 patients with PD, 46.3% had subjective and only 13.4% had objective sleepiness with a weak negative correlation between ESS and MSLT latency. A high body mass index (BMI) was associated with both ESS and MSLT, a pain complaint with ESS, and a higher apnea/hypopnea index with MSLT. However, no associations were found between both objective and subjective sleepiness, and measures of motor disability, disease onset, medication (type and dose), depression, insomnia, restless legs syndrome, REM sleep behaviour disorder and nighttime sleep evaluation. Conclusion: We found a high frequency of self-reported EDS in PD, a finding which is however not confirmed by the gold standard neurophysiological evaluation. Current treatment options for EDS in PD are very limited; it thus remains to be determined whether decreasing pain and BMI in association with the treatment of sleep apnea syndrome would decrease significantly daytime sleepiness in PD. © 2014 Cochen De Cock et al.


Bonnet C.,French Institute of Health and Medical Research | Roubertie A.,Commission Mouvements Anormaux de la Societe Francaise de Neurologie Pediatrique | Doummar D.,Commission Mouvements Anormaux de la Societe Francaise de Neurologie Pediatrique | Bahi-Buisson N.,Commission Mouvements Anormaux de la Societe Francaise de Neurologie Pediatrique | And 6 more authors.
Movement Disorders | Year: 2010

Developmental and benign movement disorders are a group of movement disorders with onset in the neonatal period, infancy, or childhood. They are characterized by the absence of associated neurological manifestations and by their favorable outcome, although developmental abnormalities can be occasionally observed. Knowledge of the clinical, neurophysiological, and pathogenetic aspects of these disorders is poor. Based on a comprehensive review of the literature and our practical experience, this article summarizes current knowledge in this area. We pay special attention to the recognition and management of these movement disorders in children. © 2010 Movement Disorder Society.


PubMed | Cabinet Saint Augustin, French Institute of Health and Medical Research, Aix - Marseille University, Bordeaux University Hospital Center and Unite des troubles du sommeil
Type: Journal Article | Journal: Neurophysiologie clinique = Clinical neurophysiology | Year: 2015

The technique of electroencephalographic neurofeedback (EEG NF) emerged in the 1970s and is a technique that measures a subjects EEG signal, processes it in real time, extracts a parameter of interest and presents this information in visual or auditory form. The goal is to effectuate a behavioural modification by modulating brain activity. The EEG NF opens new therapeutic possibilities in the fields of psychiatry and neurology. However, the development of EEG NF in clinical practice requires (i) a good level of evidence of therapeutic efficacy of this technique, (ii) a good practice guide for this technique. Firstly, this article investigates selected trials with the following criteria: study design with controlled, randomized, and open or blind protocol, primary endpoint related to the mental and brain disorders treated and assessed with standardized measurement tools, identifiable EEG neurophysiological targets, underpinned by pathophysiological relevance. Trials were found for: epilepsies, migraine, stroke, chronic insomnia, attentional-deficit/hyperactivity disorder (ADHD), autism spectrum disorder, major depressive disorder, anxiety disorders, addictive disorders, psychotic disorders. Secondly, this article investigates the principles of neurofeedback therapy in line with learning theory. Different underlying therapeutic models are presented didactically between two continua: a continuum between implicit and explicit learning and a continuum between the biomedical model (centred on the disease) and integrative biopsychosocial model of health (centred on the illness). The main relevant learning model is to link neurofeedback therapy with the field of cognitive remediation techniques. The methodological specificity of neurofeedback is to be guided by biologically relevant neurophysiological parameters. Guidelines for good clinical practice of EEG NF concerning technical issues of electrophysiology and of learning are suggested. These require validation by institutional structures for the clinical practice of EEG NF.


Bayard S.,Unite des Troubles du Sommeil | Bayard S.,French Institute of Health and Medical Research | De Cock V.C.,Unite des Troubles du Sommeil | De Cock V.C.,French Institute of Health and Medical Research | And 2 more authors.
Geriatrie et Psychologie Neuropsychiatrie du Vieillissement | Year: 2011

Dopamine replacement therapy in Parkinson's disease (PD) improves the motor symptoms. However, it has recently been shown that a small sub-group of patients suffers from motor and behavioral disturbances associated with the use of dopamine agonists (DAs). The behavioral disorders are incentive- or reward-based repetitive symptoms regrouped under the term « dopamine dysregulation syndrome » (DDS). They include pathological gambling, hypersexuality, compulsive shopping, compulsive eating, punding, and compulsive medication use. Whether these behaviors are related to the dopaminergic medications interacting with an underlying individual vulnerability or whether the primary pathological features of Parkinson's disease play a role is not entirely understood. This review is devoted to the phenomenology of the DDS and factors influencing its susceptibility. We further review the literature studies that investigated the decision-making profile using the Iowa Gambling Task in Parkinson's disease, and the recent literature devoted to these abnormal behaviors in the restless legs syndrome (RLS). Given the potential substantial impact of the DDS on personal, familial, social, and financialwell-being, patients with PD or RLS should be informed that DAs use may lead to the development of impulsive and compulsive disorders, and clinicians should include the investigation of these disorders as part of routine clinical care. The refinement of clinical strategies to predict, identify and manage DDS will help the future care of motor and non-motor symptoms of Parkinson's disease.


Rapid eye movement (REM) sleep behavior disorder (RBD) is a fascinating parasomnia in which patients are able to enact their dreams because of a lack of muscle atonia during REM sleep. RBD represents a unique window into the dream world. Frequently associated with Parkinson's disease (PD), RBD raises various issues about dream modifications in this pathology and about aggressiveness during RBD episodes in placid patients during wakefulness. Studies on these behaviors have underlined their non-stereotyped, action-filled and violent characteristics but also their isomorphism with dream content. Complex, learnt behaviors may reflect the cortical involvement in this parasomnia but the more frequent elementary movements and the associated periodic limb movements during sleep also implicate the brainstem. Surprisingly, patients with PD have an improvement of their movements during their RBD as if they were disease-free. Also not yet understood, this improvement of movement during REM sleep raises issues about the pathways involved in RBD and about the possibility of using this pathway to improve movement in PD during the day. © 2012 Elsevier B.V.


Rapid eye movement (REM) sleep behavior disorder (RBD) is a fascinating parasomnia in which patients are able to enact their dreams because of a lack of muscle atonia during REM sleep. RBD represents a unique window into the dream world. Frequently associated with Parkinsons disease (PD), RBD raises various issues about dream modifications in this pathology and about aggressiveness during RBD episodes in placid patients during wakefulness. Studies on these behaviors have underlined their non-stereotyped, action-filled and violent characteristics but also their isomorphism with dream content. Complex, learnt behaviors may reflect the cortical involvement in this parasomnia but the more frequent elementary movements and the associated periodic limb movements during sleep also implicate the brainstem. Surprisingly, patients with PD have an improvement of their movements during their RBD as if they were disease-free. Also not yet understood, this improvement of movement during REM sleep raises issues about the pathways involved in RBD and about the possibility of using this pathway to improve movement in PD during the day.


PubMed | Unite des troubles du sommeil
Type: Journal Article | Journal: Movement disorders : official journal of the Movement Disorder Society | Year: 2012

Diagnosis of restless leg syndrome (RLS) in Parkinsons disease (PD) is difficult because of clinical confounds. The suggested immobilization test (SIT) is validated for diagnosis of primary RLS. This study evaluated the usefulness of the SIT for diagnosis of RLS in PD. We compared SIT scores, as well as polysomnography measures in 50 patients with PD (25 with RLS, 25 without), 25 patients with primary RLS, and 25 age/sex matched controls. Mean leg discomfort score was increased in patients with PD and RLS compared to PD without RLS, and also in patients with primary RLS compared to controls. Leg discomfort was significantly higher at the end of the test in patients with RLS compared to patients without RLS. Intensity of leg discomfort was similar between patients with RLS, with or without PD. Using a mean leg discomfort cutoff of 11, we showed sensitivity of 91% and specificity of 72% for RLS diagnosis in PD during symptomatic time intervals. Periodic leg movements index during the SIT did not differ between groups. Periodic leg movements index during sleep and wakefulness was increased in patients with primary RLS compared to controls, but did not differ between patients with PD, with and without RLS. The sensory SIT is a simple test that may help diagnose RLS in patients with PD.


PubMed | Unite des Troubles du Sommeil
Type: Journal Article | Journal: Psychiatry research | Year: 2011

We investigated the links among decision-making assessed by the Iowa Gambling Task (IGT) and the Game of Dice Task (GDT), and the four facets of impulsivity (urgency, lack of premeditation, lack of perseverance, and sensation seeking, UPPS) proposed by Whiteside and Lynam (2001) in a sample of 107 healthy volunteers. Hierarchical regressions controlling for age and gender indicated that sensation seeking and urgency were linked to disadvantageous decisions on the GDT while no association was found between IGT performance and the UPPS. Sensation seeking and urgency facets of impulsivity are related in healthy individuals, to decision-making processes where potential consequences of different options and their subsequent probabilities rely on explicit information. In healthy controls, there is little overlap between decision-making influenced by both implicit and explicit information and impulsivity as measured by the UPPS. These findings add evidence to the notion that self-reported trait impulsivity is associated with the decision making process. Decisions made under risk seemed to be differentially associated with specific facets of impulsivity.

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