Parkinson's disease: evidence from ideomotor apraxia

Impairment of motor planning in patients with Parkinson's disease: evidence from ideomotor apraxia testing.

Compared with a group of age matched controls, patients with Parkinson's disease scored significantly lower in testing for ideomotor apraxia. Imitation of movement sequences was affected more severely than performance of single movements. The degree of impairment was not related to severity of motor disability, but correlated strongly with the results of tests that measured visuospatial and vis...

Repetitive Transcranial Magnetic Stimulation for Limb-Kinetic Apraxia in Parkinson's Disease

Ideomotor limb apraxia in Huntington's disease: implications for corticostriate involvement.

Ideomotor limb apraxia, a disorder of goal-directed movement, has been attributed to lesions in the frontal and parietal lobes, but the role of subcortical structures is less certain. In order to determine its prevalence in a disorder affecting the basal ganglia and corticostriatal connections, we examined imitation of hand gestures in Huntington's disease (HD) patients. We also assessed the re...

Apraxia in movement disorders.

The definition of apraxia specifies that the disturbance of performed skilled movements cannot be explained by the more elemental motor disorders typical of patients with movement disorders. Generally this does not present a significant diagnostic problem when dealing with 'higher-level' praxic disturbances (e.g. ideational apraxia), but it can be a major confound in establishing the presence o...

Upper and Lower Face and Ideomotor Apraxia in Patients with Alzheimer’s Disease

INTRODUCTION Apraxia of face movement in Alzheimer's disease (AD) has been rarely investigated. This study aimed at investigating the frequency of lower (mouth, tongue and throat) and upper (eyes and eyebrows) face apraxia, in AD and its relationship with limb apraxia and severity of dementia. METHODS Fifty seven patients with AD were tested with a new standardised test of face apraxia includ...