Type of Publication: | Journal article |
URI (citable link): | http://nbn-resolving.de/urn:nbn:de:bsz:352-202728 |
Author: | Delius, Juan; Vollrath, Fritz W. |
Year of publication: | 1973 |
Published in: | Journal of Comparative Physiology ; 83 (1973), 2. - pp. 123-134. - ISSN 0340-7594 |
DOI (citable link): | https://dx.doi.org/10.1007/BF00696891 |
Summary: |
Pigeons without labyrinths or with sectioned spinal cords continue to show compensatory reflexes to passive body rotations. This paper reports electrophysiological efforts to identify the source of afference controlling these reflexes. A proportion of fibres in lumbosacral spinal dorsal roots were found to respond briskly to body rotations around the longitudinal and the transversal axes and less to rotation around the vertical axis. Their responsiveness to rotation was unaffected by sectioning the spinal cord at a rostral level and by cutting the somatic branch of the spinal nerve corresponding to the relevant dorsal root. It could be demonstrated that movements of the viscera brought about in two different ways were adequate stimuli for these ldquorotationrdquo units. It is surmised that the sense organs responsible are stretch receptors located in the mesenteries. The arrangement of mesenteries is deemed suitable for the detection of visceral movements caused by body rotation. Concordances between the behaviour of the rotation units and responses of muscle units involved in the righting reflexes as described by Biederman-Thorson and Thorson (1973) strongly suggest that the afferences described are those controlling the reflexes of labyrinthless or spinally transected pigeons.
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Summary in another language: |
Tauben ohne Vestibularorgane oder mit durohtrenntem Rückenmark zeigen auf passive Körperdrehungen kompensatorische Reflexe. Die vorliegende Arbeit berichtet über elektrophysiologische Versuche, den Ursprung der verantwortlichen Afferenzen festzustellen. Eine Anzahl Fasern der dorsalen spinalen Wurzeln im lumbosacralen Bereich antworteten empfindlich auf Körperdrehungen um die Längs- und Querachse, weniger ausgeprägt auf Drehungen um die Hochachse. Die Antworten blieben bei rostraler Durchtrennung des Rückenmarks erhalten, ebenso, wenn die somatischen Äste des Spinalnervens durchschnitten wurden. Bewegung der Eingeweide, hervorgerufen durch zweierlei Methoden, erwies sich als ein adäquater Reiz für diese ldquorKörper-Kipprdquo-Einheiten. Es wird angenommen, daß die Afferenzen aus Streckrezeptoren in den Mesenterien kommen. Die Anordnung der Mesenterien erscheint ausreichend geeignet für die eindeutige Wahrnehmung von durch Kippungen des Körpers hervorgerufenen Eingeweidebewegungen. Übereinstimmung zwischen dem Verhalten der Körper-Kipp-Einheiten und die Reaktionen von reflexbeteiligten Muskeleinheiten, wie sie von Biederman-Thorson und Thorson (1973) beschrieben worden sind, bekräftigen die Vermutung, daß die beschriebenen Afferenzen diejenigen sind, die die Gleichgewichtsreflexe von labyrinthlosen und spinalen Tauben kontrollieren.
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Subject (DDC): | 150 Psychology |
Link to License: | In Copyright |
DELIUS, Juan, Fritz W. VOLLRATH, 1973. Rotation compensating reflexes independent of the labyrinth. In: Journal of Comparative Physiology. 83(2), pp. 123-134. ISSN 0340-7594. Available under: doi: 10.1007/BF00696891
@article{Delius1973Rotat-20272, title={Rotation compensating reflexes independent of the labyrinth}, year={1973}, doi={10.1007/BF00696891}, number={2}, volume={83}, issn={0340-7594}, journal={Journal of Comparative Physiology}, pages={123--134}, author={Delius, Juan and Vollrath, Fritz W.} }
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rotation_delius_vollrath.pdf | 236 |