A specific deficit in the temporal organisation of pantomime action in apraxia

Left-hemisphere damaged patients with apraxia may show an aggravation of their deficit with increased movement complexity and duration. This effect can either be attributed to a faulty selection of movements that constitute a complex action, a deficit of shifting motor attention to the forthcoming movement within an action sequence, or, alternatively, disturbed temporal processing. Furthermore, the observed effect may result from the brain lesion per se, i.e. an „unspecific“ effect. Ten Patients with lesions of the left (and right) hemisphere with and without apraxia (or neglect, respectively, resulting in a tot…