Summary
In isotonic and isometric goal-directed index finger movements made as fast as possible, the “braking hypothesis” ascribed to the antagonist burst was tested. Under isotonic conditions, the extensor burst often failed to occur in small angle movements with low inertial load. It regularly occurred, however, in small angle movements with high inertial load and in wide angle movements with both low and high inertial loads. Such features suggest, indeed, the antagonist burst as being part of braking strategies. Under isometric conditions, the antagonist burst — if it occurred — exhibited characteristics which suggested a rapidly alternating movement rather than a braking strategy.
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Meinck, H.M., Benecke, R., Meyer, W. et al. Human ballistic finger flexion: Uncoupling of the three-burst pattern. Exp Brain Res 55, 127–133 (1984). https://doi.org/10.1007/BF00240506
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DOI: https://doi.org/10.1007/BF00240506