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Fig. 5 | Journal of NeuroEngineering and Rehabilitation

Fig. 5

From: Grip control and motor coordination with implanted and surface electrodes while grasping with an osseointegrated prosthetic hand

Fig. 5

Motor coordination during the pick and lift task for the eEMG (top) and sEMG (bottom) configurations. Grip force vs load force profiles from object contact to lift-off for all subjects and test configurations. None of the configurations promoted coordinated grip-load forces patterns in subjects’ performance. Unexpectedly, sEMG curves revealed a more linear ratio, closer to the mature grasp behavior observed in able-bodied adult humans, even though the instrumented object virtually broke (task failure) considerably more frequently in the sEMG than in the eEMG configuration for S1 and S3

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