PT  - JOURNAL ARTICLE
AU  - Baroni, Alberto
AU  - Benvenuti, Francesco
AU  - Fantini, Laura
AU  - Pantaleo, Tito
AU  - Urbani, Flora
TI  - Human ballistic arm abduction movements
AID  - 10.1212/WNL.34.7.868
DP  - 1984 Jul 01
TA  - Neurology
PG  - 868--868
VI  - 34
IP  - 7
4099  - http://n.neurology.org/content/34/7/868.short
4100  - http://n.neurology.org/content/34/7/868.full
SO  - Neurology1984 Jul 01; 34
AB  - In patients with Parkinson's disease who had never previously been treated with any antiparkinsonism drug, we studied the effects of L-dopa on ballistic arm abduction movement in a step-tracking task. L-Dopatreatment increased the mean velocity of the initial movement towards the target without loss of accuracy and with improved motor performance under open-loop conditions. Performance also improved in motor tasks with expected perturbation. EMG patterns of arm abduction movements showed abnormal features in untreated patients and improved after L-dopa treatment.