The association between motor subtypes and psychopathology in Parkinson's disease.

[1]  G. Wooten,et al.  Prospective study of hallucinations and delusions in Parkinson's disease , 2001, Journal of neurology, neurosurgery, and psychiatry.

[2]  D. Bowers,et al.  Laterality, region, and type of motor dysfunction correlate with cognitive impairment in Parkinson's disease , 2007, Movement disorders : official journal of the Movement Disorder Society.

[3]  I. McKeith,et al.  Motor subtype and cognitive decline in Parkinson’s disease, Parkinson’s disease with dementia, and dementia with Lewy bodies , 2006, Journal of Neurology, Neurosurgery & Psychiatry.

[4]  M Emre,et al.  Neuropsychiatric symptoms in patients with Parkinson’s disease and dementia: frequency, profile and associated care giver stress , 2006, Journal of Neurology, Neurosurgery & Psychiatry.

[5]  D. Aarsland,et al.  A systematic review of prevalence studies of dementia in Parkinson's disease , 2005, Movement disorders : official journal of the Movement Disorder Society.

[6]  Rolph E. Anderson,et al.  Multivariate Data Analysis (7th ed. , 2009 .

[7]  A. Korczyn,et al.  Auditory hallucinations in Parkinson’s disease , 1998, Journal of neurology, neurosurgery, and psychiatry.

[8]  D. Turk,et al.  Toward an Empirically Derived Taxonomy of Chronic Pain Patients: Integration of Psychological Assessment Data. , 1988 .

[9]  C. Ward.  What contributes to quality of life in patients with Parkinson's disease? , 2000, Journal of neurology, neurosurgery, and psychiatry.

[10]  Rolph E. Anderson,et al.  Multivariate data analysis with readings (2nd ed.) , 1986 .

[11]  C. Marsden,et al.  Recent Developments in Parkinson's Disease , 1986 .

[12]  D. Aarsland,et al.  A systematic review of prevalence studies of depression in Parkinson's disease , 2008, Movement disorders : official journal of the Movement Disorder Society.

[13]  W. Jost,et al.  [Improvements in motor and non-motor symptoms in parkinson patients under ropinirole therapy]. , 2007, Fortschritte der Neurologie-Psychiatrie.

[14]  J. Jankovic,et al.  The heterogeneity of Parkinson's disease , 1985, Neurology.

[15]  J. Cummings,et al.  Range of neuropsychiatric disturbances in patients with Parkinson’s disease , 1999, Journal of neurology, neurosurgery, and psychiatry.

[16]  M. Hoehn,et al.  Parkinsonism , 1967, Neurology.

[17]  J. Cummings,et al.  Prevalence and clinical correlates of psychotic symptoms in Parkinson disease: a community-based study. , 1999, Archives of neurology.

[18]  M. Merello,et al.  Depression in classic versus akinetic‐rigid Parkinson's disease , 1998, Movement disorders : official journal of the Movement Disorder Society.

[19]  I. Appollonio,et al.  Clinical, neuropsychological, and morphometric correlates of apathy in Parkinson's disease , 2002, Movement disorders : official journal of the Movement Disorder Society.

[20]  A. David,et al.  Visual hallucinations in Parkinson's disease: a review and phenomenological survey , 2001, Journal of neurology, neurosurgery, and psychiatry.

[21]  H. Sagar,et al.  A data‐driven approach to the study of heterogeneity in idiopathic Parkinson's disease: identification of three distinct subtypes , 1999, Movement disorders : official journal of the Movement Disorder Society.

[22]  K. Jellinger,et al.  Recent developments in the pathology of Parkinson's disease. , 2002, Journal of neural transmission. Supplementum.

[23]  S. Folstein,et al.  "Mini-mental state". A practical method for grading the cognitive state of patients for the clinician. , 1975, Journal of psychiatric research.

[24]  J. Jankovic,et al.  Variable expression of Parkinson's disease , 1990, Neurology.

[25]  D. Aarsland,et al.  Changes in motor subtype and risk for incident dementia in Parkinson's disease , 2006, Movement disorders : official journal of the Movement Disorder Society.

[26]  G. Fénelon,et al.  Hallucinations in Parkinson's disease: prevalence, phenomenology and risk factors. , 2000, Brain : a journal of neurology.

[27]  T. Robbins,et al.  Heterogeneity of Parkinson’s disease in the early clinical stages using a data driven approach , 2005, Journal of Neurology, Neurosurgery & Psychiatry.

[28]  V. Preedy,et al.  Unified Parkinson's Disease Rating Scale , 2010 .

[29]  M. Åsberg,et al.  A New Depression Scale Designed to be Sensitive to Change , 1979, British Journal of Psychiatry.

[30]  S Fahn,et al.  Committee. Unified Parkinson’s Disease Rating Scale. , 2001 .

[31]  D. Maraganore,et al.  A population perspective on diagnostic criteria for Parkinson's disease , 1997, Neurology.

[32]  K. Jellinger,et al.  The Neuropathologic Basis of Different Clinical Subgroups of Parkinson's Disease , 1991, Journal of neuropathology and experimental neurology.