Figure 3

Three recordings from the same muscle spindle afferent in response to mechanically-assisted manipulation (MAM) using the Pulstar at the 22, 44 and 67N device settings (A–C respectively). Mean discharge frequency was the greatest during the 22N thrust (A). Peak mean discharge frequencies were similar for the 44N (B) and 67N (C) MAM thrust. The 67N thrust exhibited a more pronounced decrease in post-MAM discharge. The secondary peak in mean frequency discharge with the 67N thrust may have been the result of the increased forces and/or recoil contact due to the device being hand-held.