Mechanisms underlying dopamine-mediated reward bias in compulsive behaviorsValerie Voon
National Institutes of Health, Bethesda, MD 20892 1428, USA
Neuron 65:135-42. 2010
..Thus, our findings are consistent with a model whereby a distorted estimation of the gain cue underpins a choice bias toward gains...
Impulse control disorders in Parkinson disease: a multicenter case--control studyValerie Voon
Behavioral and Clinical Neurosciences Institute, University of Cambridge, Cambridge, England
Ann Neurol 69:986-96. 2011
..To assess factors associated with impulse control disorders (ICDs) in Parkinson disease (PD) using a multicenter case--control design...
- Chronic dopaminergic stimulation in Parkinson's disease: from dyskinesias to impulse control disorders
Valerie Voon
Wellcome Trust Centre for Neuroimaging, Institute of Neurology, University College London, London, UK
Lancet Neurol 8:1140-9. 2009
..We integrate these mechanisms with the emerging view of the basal ganglia as a distributive system involved in the selection and facilitation of movements, acts, and emotions...
- The involuntary nature of conversion disorder
V Voon
National Institute of Neurological Disorders and Stroke, NIH, Bethesda, MD, USA
Neurology 74:223-8. 2010
..Using fMRI, we assessed the correlates of self-agency during conversion tremor...
- Aberrant supplementary motor complex and limbic activity during motor preparation in motor conversion disorder
Valerie Voon
Behavioral and Clinical Neurosciences Institute, University of Cambridge, Cambridge, UK
Mov Disord 26:2396-403. 2011
....
- Impulsive choice and response in dopamine agonist-related impulse control behaviors
Valerie Voon
National Institutes of Health, 10 Center Drive, Bldg 10 Rm 7D37, Bethesda, MD 20892 1428, USA
Psychopharmacology (Berl) 207:645-59. 2010
..Dopaminergic medication-related impulse control disorders (ICDs) such as pathological gambling and compulsive shopping have been reported in Parkinson's disease (PD)...
- Dopamine agonists and risk: impulse control disorders in Parkinson's disease
Valerie Voon
Behavioural and Clinical Neurosciences Institute, Department of Experimental Psychology, Downing Site, University of Cambridge, Cambridge CB2 3EB, UK
Brain 134:1438-46. 2011
..Our results provide a potential explanation of why dopamine agonists may lead to an unconscious bias towards risk in susceptible individuals...
Medication-related impulse control and repetitive behaviors in Parkinson's diseaseValerie Voon
Human Motor Control Section, National Institute of Neurological Disorders and Stroke, National Institute of Health, Bethesda, Maryland 20892 1428, USA
Curr Opin Neurol 20:484-92. 2007
..In patients on dopamine agonists, these behaviors as a group are relatively common, can have potentially devastating psychosocial consequences and are commonly hidden...
- Emotional stimuli and motor conversion disorder
Valerie Voon
National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD 20892 1428, USA
Brain 133:1526-36. 2010
..Greater functional connectivity of limbic regions influencing motor preparatory regions during states of arousal may underlie the pathophysiology of motor conversion symptoms...
- Psychiatric symptoms associated with focal hand dystonia
Valerie Voon
Behavioral and Clinical Neurosciences Institute, University of Cambridge, Cambridge, UK
Mov Disord 25:2249-52. 2010
..95% of patients with FHD along with a family history of depression in (16 of 39) 41.02%. Overlapping mechanisms manifesting as FHD may also predispose to OC symptoms and likely implicates a common striatal dysfunction...
- A multicentre study on suicide outcomes following subthalamic stimulation for Parkinson's disease
Valerie Voon
National Institute of Neurological Disorders and Stroke, NIH, Bethesda, MD 20892 1428, USA
Brain 131:2720-8. 2008
..Postoperative depression should be carefully assessed and treated. A multidisciplinary assessment and follow-up is recommended...
- Medication-related impulse control and repetitive behaviors in Parkinson disease
Valerie Voon
National Institute of Neurological Disorders and Stroke, National Institutes of Health, 10 Center Dr, Bldg 10, Room 5S213, Bethesda, MD 20892 1428, USA
Arch Neurol 64:1089-96. 2007
..The study of these behaviors allows not only improved clinical management but also greater insight into a biologically mediated complex behavioral model...
- Impulse control disorders in Parkinson's disease: recent advances
Valerie Voon
Behavioural and Clinical Neurosciences Institute, University of Cambridge, Cambridge, UK
Curr Opin Neurol 24:324-30. 2011
..The aim is to review the recent advances in the epidemiology and pathophysiology of impulse control disorders (ICDs) in Parkinson's disease...
- Psychopathology and psychogenic movement disorders
Sarah Kranick
Human Motor Control Section, Medical Neurology Branch, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, Maryland, USA
Mov Disord 26:1844-50. 2011
..A careful psychological assessment is indicated to optimize therapeutic modalities...
- Factors associated with dopaminergic drug-related pathological gambling in Parkinson disease
Valerie Voon
National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD 20892, USA
Arch Neurol 64:212-6. 2007
..To evaluate factors associated with pathological gambling (PG) in Parkinson disease (PD)...
- Frequency of impulse control behaviours associated with dopaminergic therapy in restless legs syndrome
Valerie Voon
Behavioural and Clinical Neurosciences Institute, University of Cambridge, Cambridge, UK
BMC Neurol 11:117. 2011
..With this study we sought to assess the cross-sectional prevalence of impulse control behaviours (ICBs) in restless legs syndrome (RLS) and to determine factors associated with ICBs in a population cohort in Germany...
