Parallel processing of proprioceptive signals by spiking local interneurons and motor neurons in the locust

@inproceedings{Burrows1987ParallelPO,
  title={Parallel processing of proprioceptive signals by spiking local interneurons and motor neurons in the locust},
  author={Malcolm Burrows},
  booktitle={The Journal of neuroscience : the official journal of the Society for Neuroscience},
  year={1987}
}
  • M. Burrows
  • Published in
    The Journal of neuroscience…
    1987
  • Biology, Medicine
The connections made by afferents from a proprioceptor at the femorotibial joint in a hind leg of a locust, the femoral chordotonal organ (FCO), were determined by making intracellular recordings from motor neurons and spiking local interneurons in the central nervous system and from afferent cell bodies in the periphery. Staining the central projections of the afferent neurons with dye introduced into their axons at the receptor, and the intracellular injection of dye into motor neurons and… Expand
Synaptic potentials in the central terminals of locust proprioceptive afferents generated by other afferents from the same sense organ
  • M. Burrows, G. Laurent
  • Biology, Medicine
  • The Journal of neuroscience : the official journal of the Society for Neuroscience
  • 1993
TLDR
It is suggested that the PSPs are depolarizing, inhibitory potentials generated in the terminals of the afferents by central neurons that release GABA, and that their role is to change the efficacy of the Afferent spikes at their first output synapses in the CNS. Expand
Central organization of common inhibitory motoneurons in the locust: role of afferent signals from leg mechanoreceptors
TLDR
Behavior and electrophysiological results indicate that reflex movements of the leg are accompanied by activity of CI neurons, and it appears that CI activity is inhibited when reflex movement of the legs are actively suppressed by the animal. Expand
Coding characteristics of spiking local interneurons during imposed limb movements in the locust.
TLDR
First- and second-order Wiener kernels revealed that the dynamics of the interneurons in the population were graded and formed a spectrum of responses whereby the activity of many cells appeared to be required to adequately describe a particular stimulus characteristic, typical of population coding. Expand
Intersegmental interneurons can control the gain of reflexes in adjacent segments of the locust by their action on nonspiking local interneurons
  • G. Laurent, M. Burrows
  • Biology, Medicine
  • The Journal of neuroscience : the official journal of the Society for Neuroscience
  • 1989
TLDR
The results suggest that nonspiking local interneurons may be compartmentalized, with synaptic inputs and their associated conductance changes restricted to particular branches. Expand
Responses of spiking local interneurones in the locust to proprioceptive signals from the femoral chordotonal organ
  • M. Burrows
  • Biology, Medicine
  • Journal of Comparative Physiology A
  • 2004
SummaryThe responses of spiking local interneurones of a ventral midline population in the metathoracic ganglion of the locust,Schistocerca gregaria, to controlled movements of a proprioceptor, theExpand
The role of spiking local interneurons in shaping the receptive fields of intersegmental interneurons in the locust
  • G. Laurent
  • Biology, Medicine
  • The Journal of neuroscience : the official journal of the Society for Neuroscience
  • 1987
TLDR
The inhibition of spiking local and intersegmental interneurons in the mesothoracic ganglion of the locust Schistocerca gregaria could become significant during walking, where the excitatory and inhibitory inputs to an interneuron are likely to be evoked during the different phases of a step cycle. Expand
Proprioceptive sensory neurons of a locust leg receive rhythmic presynpatic inhibition during walking
  • H. Wolf, M. Burrows
  • Biology, Medicine
  • The Journal of neuroscience : the official journal of the Society for Neuroscience
  • 1995
TLDR
Intracellular recordings from these neurons during walking show that their spikes are superimposed on a depolarizing synaptic input generated near their output terminals in the CNS, which means that the overall effectiveness of the sensory spikes in evoking EPSPs in postsynaptic neurons will be reduced during walking. Expand
Physiological and Ultrastructural Characterization of a Central Synaptic Connection between Identified Motor Neurons in the Locust
An excitatory connection between an extensor and several flexor tibiae motor neurons that innervate antagonistic muscles in the hind leg of a locust has been characterized using physiological andExpand
Proprioceptive inputs to nonspiking local interneurons contribute to local reflexes of a locust hindleg
TLDR
Local reflexes of a leg of the locust Schistocerca gregaria (Forskal) can be elicited by selective stimulation of a proprioceptor at the femorotibial joint, and the role of the nonspiking interneurons in mediating these reflex effects is understood. Expand
Connections between thoraco-coxal proprioceptive afferents and motor neurons in the locust.
  • M. Wildman
  • Biology, Medicine
  • The Journal of experimental biology
  • 2000
TLDR
The position of the coxal segment of the locust hind leg relative to the thorax is monitored by a variety of proprioceptors, including three chordotonal organs and a myochordotonal organ, and connections made by afferents with metathoracic motor neurons innervating thoraco-coxal and wing muscles were investigated. Expand
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References

SHOWING 1-10 OF 48 REFERENCES
Spiking local interneurons as primary integrators of mechanosensory information in the locust.
TLDR
It is concluded that the spiking local interneurons are major elements in the primary integration of inputs from external receptors on the hindlegs, and are involved in at least two types of pathways for local interactions: 1) sensory neuron-spiking local Interneuron-motor neuron, and 2). Expand
Receptive fields of motor neurons underlying local tactile reflexes in the locust
  • M. Siegler, M. Burrows
  • Biology, Medicine
  • The Journal of neuroscience : the official journal of the Society for Neuroscience
  • 1986
The receptive fields of motor neurons to a hind leg were mapped by recording intracellularly from their cell bodies or from the muscle fibers they innervate while stimulating mechanoreceptors on theExpand
The processing of mechanosensory information by spiking local interneurons in the locust.
  • M. Burrows
  • Psychology, Medicine
  • Journal of neurophysiology
  • 1985
The responses and receptive fields of a group of spiking local interneurons in the metathoracic ganglion of the locust were defined by making intracellular recordings from them while moving joints ofExpand
Processing by local interneurons of mechanosensory signals involved in a leg reflex of the locust
  • M. Burrows, H. Pfluger
  • Biology, Medicine
  • The Journal of neuroscience : the official journal of the Society for Neuroscience
  • 1986
TLDR
A reliable inhibitory reflex effect on the single levator tarsi is evoked by movement of any of the 4 spurs, and the receptive field of this motor neuron results from the convergence of inputs from a few interneurons. Expand
Organization of receptive fields of spiking local interneurons in the locust with inputs from hair afferents.
The receptive fields of spiking local interneurons in the locust were defined by making intracellular recordings from them while stimulating mechanoreceptors on the surface of a hindleg. All theExpand
The morphological diversity and receptive fields of spiking local interneurons in the locust metathoracic ganglion
TLDR
Twenty‐one types of spiking local interneurons are described in a segmental ganglion of the locust, and each type of interneuron is excited by a specific array of mechanoreceptors on the hind leg ipsilateral to its neuropilar branches. Expand
Organization of motor neurons to a multiply innervated insect muscle.
TLDR
Nine excitatory motor neurons have been identified as innervating the locust metathoracic flexor tibiae and the hypothesis that subsets of the flexor motor neuron pool are recruited for different behaviors is discussed. Expand
Triggering of locust jump by multimodal inhibitory interneurons.
TLDR
It is proposed that proprioceptive feedback during the cocontraction phase depolarizes the M-neurons to decrease their threshold, thus enabling extrinsic sensory stimuli to generate action potentials in both M-NEurons and in so doing trigger a jump. Expand
The morphology of two groups of spiking local interneurons in the metathoracic ganglion of the locust
TLDR
Two bilaterally symmetrical groups of spiking local interneurons are described in a segmental ganglion of the locust, which divide the extensive neuropilar branches into distinct ventral and dorsal regions. Expand
Monosynaptic connexions between wing stretch receptors and flight motoneurones of the locust.
  • M. Burrows
  • Biology, Medicine
  • The Journal of experimental biology
  • 1975
TLDR
The connexions between stretch receptors of the wings and motoneurones innervating flight muscles have been studied anatomically and physiologically and it is expected that the stretch receptor will influence the time at which a mot oneurone will spike and hence have an effect on the amplitude of the upstroke and upon the phase relationship between spikes of motoneurs. Expand
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