TY - GEN
T1 - Mechanical perturbations applied during impending movement evoke startle-like responses
AU - Ravichandran, Vengateswaran J.
AU - Shemmell, Jonathan B.
AU - Perreault, Eric J.
PY - 2009
Y1 - 2009
N2 - Stretch reflexes have been considered one of the simplest circuits in the human nervous system. Yet, their role is controversial given that they assist or resist an imposed perturbation depending on the task instruction. Evidence shows that a loud acoustic stimulus applied prior to an impending movement elicits a movement-direction dependent muscle activity. In our study, we found that a perturbation can also trigger this early onset of movement, if applied during movement preparation. These responses were also perturbation direction dependent. This suggests an interaction of between the limb-stabilizing stretch reflexes and the voluntary activity.
AB - Stretch reflexes have been considered one of the simplest circuits in the human nervous system. Yet, their role is controversial given that they assist or resist an imposed perturbation depending on the task instruction. Evidence shows that a loud acoustic stimulus applied prior to an impending movement elicits a movement-direction dependent muscle activity. In our study, we found that a perturbation can also trigger this early onset of movement, if applied during movement preparation. These responses were also perturbation direction dependent. This suggests an interaction of between the limb-stabilizing stretch reflexes and the voluntary activity.
UR - http://www.scopus.com/inward/record.url?scp=77950991087&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77950991087&partnerID=8YFLogxK
U2 - 10.1109/IEMBS.2009.5332494
DO - 10.1109/IEMBS.2009.5332494
M3 - Conference contribution
C2 - 19963543
AN - SCOPUS:77950991087
SN - 9781424432967
T3 - Proceedings of the 31st Annual International Conference of the IEEE Engineering in Medicine and Biology Society: Engineering the Future of Biomedicine, EMBC 2009
SP - 2947
EP - 2950
BT - Proceedings of the 31st Annual International Conference of the IEEE Engineering in Medicine and Biology Society
T2 - 31st Annual International Conference of the IEEE Engineering in Medicine and Biology Society: Engineering the Future of Biomedicine, EMBC 2009
Y2 - 2 September 2009 through 6 September 2009
ER -