Locust flight steering

D. Robert; C. H. F. Rowell

doi:10.1007/bf00195960

Locust flight steering

Journal of Comparative Physiology A ◽

10.1007/bf00195959 ◽

1992 ◽

Vol 171 (1) ◽

pp. 41-51 ◽

Cited By ~ 14

Author(s):

D. Robert ◽

C. H. F. Rowell

Keyword(s):

Locust Flight ◽

Flight Steering

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The possible role of fast wing reflexes in locust flight

The Science of Nature ◽

10.1007/bf00420645 ◽

1978 ◽

Vol 65 (1) ◽

pp. 65-66 ◽

Cited By ~ 22

Author(s):

G. Wendler

Keyword(s):

Locust Flight

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Peripheral Inhibition in the System Responsible for Initiation and Maintenance of Locust Flight

Sensory Systems and Communication in Arthropods ◽

10.1007/978-3-0348-6410-7_22 ◽

1990 ◽

pp. 122-126

Author(s):

Vladimir L. Svidersky

Keyword(s):

Locust Flight ◽

Peripheral Inhibition

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Neural control of hindleg steering in flight in the locust

Journal of Experimental Biology ◽

10.1242/jeb.198.4.869 ◽

1995 ◽

Vol 198 (4) ◽

pp. 869-875 ◽

Cited By ~ 2

Author(s):

M Lorez

Keyword(s):

Intracellular Recording ◽

Neural Control ◽

Motor Pattern ◽

Sensory Information ◽

Flight Activity ◽

Common Input ◽

Central Elements ◽

Flight Steering ◽

Highly Correlated ◽

Flight Motor

Corrective flight steering with the hindlegs was investigated in intact tethered flying locusts inside a wind tunnel as well as in animals dissected for intracellular recording and showing fictive flight activity. In intact tethered flying animals, activity in the second coxal abductor muscle (M126) was highly correlated with hindleg steering and was coupled to the elevator phase of the flight cycle. Fictive flight and steering could also be elicited in animals dissected for intracellular recording of motoneurones innervating M126. During fictive flight activity, motoneurones 126 were rhythmically excited in the elevator phase, presumably from central elements of the neuronal oscillator generating the flight motor pattern, as is the case for motoneurones innervating wing muscles. During fictive straight flight, this input was subthreshold, and it could be demonstrated that simulated deviation from the flight course resulted in recruitment of motoneurones 126. Statistical analysis of the latencies of fast muscle spikes in M126 and in one wing elevator muscle showed that both received common input during flight steering. One source of this common input was identified as the sensory information from the lateral ocelli, which play an important role in the detection of course deviation. The experiments demonstrated that processing in the sensory-motor system for hindleg steering is probably organized in a very similar way to that responsible for steering with the wings.

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Sensorimotor Mechanisms and Learning in the Locust Flight System

Prerational Intelligence: Adaptive Behavior and Intelligent Systems Without Symbols and Logic, Volume 1, Volume 2 Prerational Intelligence: Interdisciplinary Perspectives on the Behavior of Natural and Artificial Systems, Volume 3 - Studies in Cognitive Systems ◽

10.1007/978-94-010-0870-9_76 ◽

2000 ◽

pp. 1202-1213

Author(s):

Bernhard Möhl

Keyword(s):

Flight System ◽

Locust Flight ◽

Sensorimotor Mechanisms

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Reconfiguration of the Respiratory Network at the Onset of Locust Flight

Journal of Neurophysiology ◽

10.1152/jn.1998.80.6.3137 ◽

1998 ◽

Vol 80 (6) ◽

pp. 3137-3147 ◽

Cited By ~ 31

Author(s):

Jan-Marino Ramirez

Keyword(s):

Respiratory Activity ◽

Respiratory Rhythm ◽

Quiescent State ◽

Suboesophageal Ganglion ◽

Rhythm Generator ◽

Locust Flight ◽

Respiratory Network ◽

Intracellular Stimulation ◽

Tonic Stimulation ◽

Stimulation Of

Ramirez, Jan-Marino. Reconfiguration of the respiratory network at the onset of locust flight. J. Neurophysiol. 80: 3137–3147, 1998. The respiratory interneurons 377, 378, 379 and 576 were identified within the suboesophageal ganglion (SOG) of the locust. Intracellular stimulation of these neurons excited the auxillary muscle 59 (M59), a muscle that is involved in the control of thoracic pumping in the locust. Like M59, these interneurons did not discharge during each respiratory cycle. However, the SOG interneurons were part of the respiratory rhythm generator because brief intracellular stimulation of these interneurons reset the respiratory rhythm and tonic stimulation increased the frequency of respiratory activity. At the onset of flight, the respiratory input into M59 and the SOG interneurons was suppressed, and these neurons discharged in phase with wing depression while abdominal pumping movements remained rhythmically active in phase with the slower respiratory rhythm (Fig. 9 ). The suppression of the respiratory input during flight seems to be mediated by the SOG interneuron 388. This interneuron was tonically activated during flight, and intracellular current injection suppressed the respiratory rhythmic input into M59. We conclude that the respiratory rhythm generator is reconfigured at flight onset. As part of the rhythm-generating network, the interneurons in the SOG are uncoupled from the rest of the respiratory network and discharge in phase with the flight rhythm. Because these SOG interneurons have a strong influence on thoracic pumping, we propose that this neural reconfiguration leads to a behavioral reconfiguration. In the quiescent state, thoracic pumping is coupled to the abdominal pumping movements and has auxillary functions. During flight, thoracic pumping is coupled to the flight rhythm and provides the major ventilatory movements during this energy-demanding locomotor behavior.

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