The effect of symptom duration on cognitive and motor perfomname in parkinsonism

europsychologic test performance was examined in a normal control group and in three groups of Parkinson disease patients, with symptoms for 2 years or less, for 3 to 5 years, or for 6 to 15 years. On a test battery sampling a wide variety of cognitive and motor abilities, significant intergroup differences occurred primarily on tasks with a primary motor component, although mild intergroup cognitive impairment was also demonstrated. The results suggested that maximal deterioration occured during the first 5 years of symptoms, with few significant additional changes after that.

[1]  M. Riklan,et al.  Integrative Functions in Parkinsonism , 1970, Perceptual and motor skills.

[2]  M. Riklan,et al.  COGNITIVE AND PERCEPTUAL PERFORMANCE IN PARKINSONISM AS A FUNCTION OF AGE AND NEUROLOGICAL IMPAIRMENT , 1964, The Journal of nervous and mental disease.

[3]  J. W. Warburton.  Memory disturbance and the Parkinson syndrome. , 1967, The British journal of medical psychology.

[4]  R. Cayton,et al.  Cognitive deficits in Parkinsonism. , 1973, British medical journal.

[5]  D. Garron,et al.  INTELLECTUAL FUNCTIONING OF PERSONS WITH IDIOPATHIC PARKINSONISM , 1972, The Journal of nervous and mental disease.

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

[7]  M. Riklan,et al.  Verbal and Perceptual Functions after Surgery of Subcortical Structures , 1964, Perceptual and motor skills.

[8]  M. M. Burns,et al.  Parkinsonism , 1975, Neurology.

[9]  P. James.  An Essay on the Shaking Palsy , 1817, The Medico-Chirurgical Journal and Review.

[10]  J. V. Van Buren,et al.  A qualitative and quantitative evaluation of parkinsonians three to six years following thalamotomy. , 1973, Confinia neurologica.

[11]  F. Mcdowell,et al.  Intellectual impairment in Parkinson's syndrome. , 1972, Brain : a journal of neurology.

[12]  R. Loewenson,et al.  Parkinson's disease , 1973, Neurology.

[13]  D. Wechsler.  Manual for the Wechsler Adult Intelligence Scale. , 1955 .

[14]  J. V. Van Buren,et al.  An assessment of cognitive function in postthalamotomy Parkinson patients. , 1973, Confinia neurologica.

[15]  R. Reitan,et al.  Intellectual and cognitive functions in Parkinson's disease. , 1971, Journal of consulting and clinical psychology.