Question: what features of muscle contraction can be determined from an emg (electromyogram)
[{'answer': 'electric potential generated', 'provenance': [{'wikipedia_id': '997173', 'title': 'Electromyography', 'start_paragraph_id': 1, 'start_character': 289, 'end_paragraph_id': 1, 'end_character': 317, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '997173', 'title': 'Electromyography', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 556, 'bleu_score': 0.9738505480425671, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11931096960497741080}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '997173', 'title': 'Electromyography', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 0, 'bleu_score': 1.0, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11931096960497741080}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '36564148', 'title': 'Electrophysiological techniques for clinical diagnosis', 'section': 'Section::::Electrophysiological techniques.:Electromyography (EMG).\n', 'start_paragraph_id': 12, 'end_paragraph_id': 12, 'meta': {'evidence_span': ['EMG measures action potentials, called Motor Unit Action Potentials (MUAPs), created during muscle contraction. A few common uses are determining whether a muscle is active or inactive during movement (onset of activity), assessing the velocity of nerve conduction, and the amount of force generated during movement.', '. EMG measures action potentials, called Motor Unit Action Potentials (MUAPs), created during muscle contraction. A few common uses are determining whether a muscle is active or inactive during movement (onset of activity), assessing the velocity of nerve conduction, and the amount of force generated during movement. Of these uses, determining the onset of muscle activity has been shown to be the most accurate. The firing of neurons throughout the brain has been known to have localized relationships to certain functions, processes and reactions to stimuli.', '. EMG measures action potentials, called Motor Unit Action Potentials (MUAPs), created during muscle contraction. A few common uses are determining whether a muscle is active or inactive during movement (onset of activity), assessing the velocity of nerve conduction, and the amount of force generated during movement. Of these uses, determining the onset of muscle activity has been shown to be the most accurate. The firing of neurons throughout the brain has been known to have localized relationships to certain functions, processes and reactions to stimuli.\rhighlight sentence(s) containing evidence, not only the answer']}}]}, {'provenance': [{'wikipedia_id': '997173', 'title': 'Electromyography', 'section': 'Section::::Abstract.', 'start_paragraph_id': 1, 'end_paragraph_id': 1, 'meta': {'evidence_span': ['An electromyograph detects the electric potential generated by muscle cells when these cells are electrically or neurologically activated.', 'Electromyography (EMG) is an electrodiagnostic medicine technique for evaluating and recording the electrical activity produced by skeletal muscles. EMG is performed using an instrument called an electromyograph to produce a record called an electromyogram. An electromyograph detects the electric potential generated by muscle cells when these cells are electrically or neurologically activated. The signals can be analyzed to detect medical abnormalities, activation level, or recruitment order, or to analyze the biomechanics of human or animal movement.', 'Electromyography (EMG) is an electrodiagnostic medicine technique for evaluating and recording the electrical activity produced by skeletal muscles. EMG is performed using an instrument called an electromyograph to produce a record called an electromyogram. An electromyograph detects the electric potential generated by muscle cells when these cells are electrically or neurologically activated. The signals can be analyzed to detect medical abnormalities, activation level, or recruitment order, or to analyze the biomechanics of human or animal movement.\rhighlight sentence(s) containing evidence, not only the answer']}}]}]