By Professor Dr. Ulrich Bässler (auth.)

This monograph represents the present prestige of neuro­ ethological examine at the diurnal habit of the stick in­ sect, Carausius morosus. The growing to be large quantity of inter­ similar experiences, a lot of that are released in simple terms in German, makes an outline of this box more and more tough. Many twiglet effects give a contribution to common difficulties like con­ trol of catalepsy, keep an eye on of strolling, program-dependent reactions and keep an eye on of joint place. hence i made a decision to assemble and synthesize the implications which are pre­ sently on hand even supposing the analyses are faraway from con­ cluded. as well as either released and unpublished result of the gang in Kaiserslautern (Bassler, Cruse, Ebner, Graham, Pfluger, Storrer, in addition to doctoral and masters students), i've got drawn upon the literature which had ap­ peared as of summer time 1981. This contains exceptionally the paintings of Godden and of Wendler and his colleagues in Cologne. A precis of the anatomical and physiological historical past, invaluable for an realizing of those investigations, is equipped in an appendix (Chap. 6). Methodological information needs to be got from the unique courses. Figures for which no resource is given are from my very own reports. I intend to replace this monograph on an annual foundation. Requests for those supplementations can be directed to me in Kaiserslautern. i need to precise my appreciation to all participants of the crowd in Kaiserslautern for his or her positive discussions, their unflagging cooperation, and their permission to incorporate hitherto unpublished results.

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These few cases, however, show precisely the predicted results (unpublished) . 5. The motor output to the extensor and flexor muscles of the tibia changes in the manner required by the hypothesis (Godden 1974). In accordance with these considerations, catalepsy can be regarded as a characteristic of the system which controls the femur-tibia joint. This concludes stage 2 of the strategy for the investigation of catalepsy in the femur-tibia joint (see Sect. 3). 1 Description of Rocking Rocking consists of rhythmic movements usually in the direction'of the transverse axis of the body.

120 -150 Fig. 36. Bode plots of the open loop femur-tibia control systems for different orthopterans, schematic presentation Femur-Tibia Control Loop, Catalepsy and Rocking 47 and Schistocerca. The amplitude-frequency responses of Extatosoma and Cuniculina are similar to that of Carausius. Although the gain seems on the average to be somewhat smaller, comparison of the maximally recorded amplitudes reveals that they have the same order of magnitude in all three species. The upper corner frequency is lower for Extatosoma and Cuniculina than for Carausius.

16. Tibia movement in response to sinusoidal movement of the receptor apodeme at different frequencies also conceivable, one must exercise caution when making inferences from such measurements. Phase shifts are generally not given in absolute time but in degrees (one full oscillation = 360°). Positive phase shift values indicate that the tibia movement occurs earlier than the corresponding receptor apodeme movement. To facilitate later considerations on the stability of the system, the amplitude of the tibia movement must be given in the same dimension as the stimulus amplitude.

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