Orientation-induced artifacts in the measurement of monosynaptic reflexes.
Hoffmann and tendon jerk reflexes were tested in human subjects at various orientations between vertical, prone and supine. The data suggest that artifacts due to movement of soft tissue may explain the current disagreement in the literature on otolithic influences on these reflexes.
D004576:Electromyography; D006112:Gravitation; D006801:Humans; D009132:Muscles / Q000502:physiology*; D010037:Otolithic Membrane / Q000502:physiology*; D011187:Posture; D011999:Recruitment, Neurophysiological; D012023:Reflex, Monosynaptic; D012026:Reflex, Stretch; D012444:Saccule and Utricle / Q000502:physiology*; D013116:Spinal Cord / Q000502:physiology; D014722:Vestibule, Labyrinth / Q000502:physiology