Muscles Alive, Their Functions Revealed by Electromyography

abduction abductor abductor hallucis Acta action potentials amplitude Anat antagonist appears Arch Basmajian biceps brachii biofeedback brachioradialis Carlsöö Clin clinical conduction velocity confirmed contraction diaphragm digitorum elbow electrical activity electrodes electromy electromyographic electromyographic study emg activity EMG signal emg studies erector spinae expiration extensor fatigue findings fine-wire electrodes finger firing rate flexed flexion flexor flexor pollicis brevis foot force forearm frequency function gastrocnemius gluteus maximus hallucis human iliopsoas increase inhibition intercostals intrinsic muscles investigators isometric laryngeal ligaments limb load maximum medial rotation movements msec MUAPS MUAPT muscle fibres muscular activity needle electrodes nerve Neurol normal occurs pattern peroneus longus phase Phys Physiol plantar pollicis brevis position posterior posture pronator quadriceps recorded recruitment rectus femoris reflex relaxation reported rôle showed single motor unit soleus sphincter subjects supination surface electrodes technique temporalis tension thumb tibialis tibialis anterior triceps vastus vastus medialis Vitti voluntary walking wire