TY - JOUR
T1 - The influence of proprioceptors signalling tibial position and movement on the kick motor programme in the locust
AU - Heitler, William James
AU - Jellema, T
PY - 1997/9
Y1 - 1997/9
N2 - Four main proprioceptors monitor tibial position in the hindleg of the locust: the femoral chordotonal organ (FCO), the lump receptor, the-suspensory ligament receptors and Brunner's organ, The influence of these proprioceptors on quantitative aspects of the kick motor programme has been investigated, The parameters measured were the duration of the initial flexion burst, the duration of co-activation of flexor and fast extensor tibiae (FETi) motoneurones, the number of FETi spikes during the co-activation, the interval between the kick and post-kick flexion, the number of FETi spikes occurring in this interval and the duration of post-kick flexion activity, The lump receptor and Brunner's organ have no detectable effect on any of these parameters, The FCO has highly significant effects on the duration of both initial flexion and post-kick flexion bursts, and on the number of FETi spikes occurring after the moment of tibial extension, The suspensory ligament receptors have significant effects upon the number of FETI spikes after the kick and the interval between the kick and the post-kick flexion, However, no proprioceptor had any influence upon the duration of coactivation or the number of FETi spikes during the coactivation, Thus, although elements of the kick motor programme preceding and following co-activation are strongly influenced by proprioceptors monitoring tibial position and movement, the co-activation stage, which is central to the effectiveness of the complete behaviour pattern, is not affected.
AB - Four main proprioceptors monitor tibial position in the hindleg of the locust: the femoral chordotonal organ (FCO), the lump receptor, the-suspensory ligament receptors and Brunner's organ, The influence of these proprioceptors on quantitative aspects of the kick motor programme has been investigated, The parameters measured were the duration of the initial flexion burst, the duration of co-activation of flexor and fast extensor tibiae (FETi) motoneurones, the number of FETi spikes during the co-activation, the interval between the kick and post-kick flexion, the number of FETi spikes occurring in this interval and the duration of post-kick flexion activity, The lump receptor and Brunner's organ have no detectable effect on any of these parameters, The FCO has highly significant effects on the duration of both initial flexion and post-kick flexion bursts, and on the number of FETi spikes occurring after the moment of tibial extension, The suspensory ligament receptors have significant effects upon the number of FETI spikes after the kick and the interval between the kick and the post-kick flexion, However, no proprioceptor had any influence upon the duration of coactivation or the number of FETi spikes during the coactivation, Thus, although elements of the kick motor programme preceding and following co-activation are strongly influenced by proprioceptors monitoring tibial position and movement, the co-activation stage, which is central to the effectiveness of the complete behaviour pattern, is not affected.
KW - Schistocerca gregaria
KW - grasshopper
KW - central pattern generator
KW - jump
KW - JUMP
KW - LOCOMOTION
KW - NEURONS
KW - NETWORK
KW - GAIN
UR - http://www.scopus.com/inward/record.url?scp=0030869574&partnerID=8YFLogxK
UR - http://biologists.com/JEB/
M3 - Article
SN - 0022-0949
VL - 200
SP - 2405
EP - 2414
JO - Journal of Experimental Biology
JF - Journal of Experimental Biology
ER -