TY  - JOUR
AB  - The properties of the system that controls the distance between body and ground was investigated in the stick insect Carausius morosus. The insect walked on a lightweight double treadwheel under open-loop or closed-loop conditions. The open-loop investigations show that the dynamic behaviour of the height-control system in the walking animal can be described in terms of a simple proportional system with negligible dynamic properties, and it is therefore much simpler than the height-control system in the standing animal. Under open-loop conditions, we found no coupling between contralateral or ipsilateral legs. This agrees with the findings on standing animals. The force-height characteristic shows two ranges, in each of which the system exhibits a linear relationship but a different slope. Under closed-loop conditions, the force-height characteristic shows the same two linear ranges, but the slopes are greater than under open-loop conditions. Because the height controller of each leg can be considered to act like a spring, this result means that under closed-loop conditions the controller is stiffer than it is under open-loop conditions.
DA  - 1993
KW  - contralateral
KW  - leg
KW  - Behaviour
KW  - Open-loop
KW  - ACT
KW  - slope
KW  - Controller
KW  - legs
KW  - NO
KW  - Carausius
KW  - distance
KW  - Walking
KW  - Animal
KW  - Animals
KW  - system
KW  - Stick Insect
KW  - insect
KW  - control
KW  - dynamic property
KW  - body
LA  - eng
IS  - 1
M2  - 141
PY  - 1993
SN  - 0022-0949
SP  - 141-155
T2  - The Journal of Experimental Biology
TI  - Control of body height in a stick insect walking on a treadwheel
UR  - https://nbn-resolving.org/urn:nbn:de:0070-pub-16813099
Y2  - 2024-11-22T04:16:37
ER  -