Processing of gustatory information by spiking local interneurons in the locust.

@article{Newland1999ProcessingOG,
  title={Processing of gustatory information by spiking local interneurons in the locust.},
  author={Philip L. Newland},
  journal={Journal of neurophysiology},
  year={1999},
  volume={82 6},
  pages={
          3149-59
        }
}
  • P. Newland
  • Published 1 December 1999
  • Biology, Medicine
  • Journal of neurophysiology
Despite the importance of gustation, little is known of the central pathways responsible for the processing and coding of different chemical stimuli. Here I have analyzed the responses of a population of spiking local interneurons, with somata at the ventral midline of the metathoracic ganglion, during stimulation of chemo- and mechanoreceptors on the legs of locusts. Volatile acidic stimuli were used to selectively activate the chemosensory neurons. Different members of the population of local… Expand
Gustatory Processing in Thoracic Local Circuits of Locusts
TLDR
G gustatory coding in the relatively simple and accessible nervous system of the locust is analyzed and it is suggested that the aversiveness of a chemical, rather than its identity, is encoded directly in the local circuits. Expand
Parallel somatotopic maps of gustatory and mechanosensory neurons in the central nervous system of an insect
TLDR
It is shown that the sensory neurons from tactile hairs form a complete 3‐dimensional somatotopic map in the mesothoracic ganglion, and the position of a receptor on the leg is preserved in the central nervous system not only for the mechanosensory neurons from both tactile hairs and basiconic sensilla but also for chemosENSory neurons. Expand
The neurobiology of taste in insects.
TLDR
It is suggested that contact-chemosensory processing by local circuits in the thoracic ganglia directly assesses a chemOSensory quality, that of aversiveness, which is dependent on both chemical identity and concentration and that other chemical qualities such as palatability may be encoded in a similar manner elsewhere in the central nervous system. 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
Neural processing of chemosensory information from the locust ovipositor
TLDR
From the typical intersegmental projections of most primary afferents and from the lack of segregation into glomerular structures, it is concluded that integration of chemosensory information from the genital segments is distributed in the terminal and the 7th abdominal ganglion. Expand
Local and Intersegmental Interneurons with Chemosensory Inputs from the Locust Ovipositor
Sensory afferents from the ovipositors influence the behaviour of locusts before and during egg-laying. Contact chemoreceptors, known as basiconic sensilla in insects, occur dispersed and crowded inExpand
Central gustatory projections and side-specificity of operant antennal muscle conditioning in the honeybee
  • S. Haupt
  • Biology, Medicine
  • Journal of Comparative Physiology A
  • 2007
TLDR
Muscle activity induced by gustatory stimulation was important for learning success and conditioning was side-specific with contralateral antennal sucrose stimulation, thus, muscle activity induced as a result of stimulation of the antenNal tip on antennAL muscle activity and its plasticity was important. Expand
Gustatory Afferents from the Locust Ovipositor: Integration at the Interneuron Level
TLDR
The physiological and morphological differences between the chemosensory interneurons suggest that there is no specific centre for processing taste information in the locust terminal ganglion. Expand
Function and central projections of gustatory receptor neurons on the antenna of the noctuid moth Spodoptera littoralis
TLDR
Responses of individual taste sensilla on the antennae of Spodoptera littoralis to sugars and salts were measured using tip recordings and the projections of their neuronal axons into the brain were traced. Expand
Mechanisms of gustatory coding in Spodoptera littoralis
TLDR
Electrophysiological observations show that taste sensilla possess neurons that respond to sugars like sucrose, fructose and glucose and to NaCl, and could not identify a gustatory receptor neuron responding to bitter compounds or amino acids, but the range of tested substances was limited and nothing is known on the behavioural significance of such compounds. Expand
...
1
2
3
...

References

SHOWING 1-10 OF 39 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
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
Convergence of mechanosensory afferents from different classes of exteroceptors onto spiking local interneurons in the locust
  • M. Burrows, P. Newland
  • Biology, Medicine
  • The Journal of neuroscience : the official journal of the Society for Neuroscience
  • 1994
TLDR
This article analyzes the mechanisms by which the tactile sensory information from different types of receptor is collated in the CNS so that spatial information is preserved and should enhance sensitivity. Expand
Reliability and effectiveness of transmission from exteroceptive sensory neurons to spiking local interneurons in the locust
  • M. Burrows
  • Biology, Medicine
  • The Journal of neuroscience : the official journal of the Society for Neuroscience
  • 1992
Mechanosensory information from exteroceptive hairs on the legs of a locust is first processed in a segmental ganglion by a midline population of spiking local interneurons for use in adjustments ofExpand
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
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 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
Avoidance reflexes mediated by contact chemoreceptors on the legs of locusts
  • P. Newland
  • Biology
  • Journal of Comparative Physiology A
  • 1998
TLDR
This method of odour stimulation of taste receptors generates less adaptation than direct contact with chemicals, and therefore represents an ideal method for stimulating taste receptors for further studies on the central pathways processing taste signals. Expand
Inhibitory interactions between spiking and nonspiking local interneurons in the locust
  • M. Burrows
  • Biology, Medicine
  • The Journal of neuroscience : the official journal of the Society for Neuroscience
  • 1987
TLDR
Viewed in this behavioral context, the pattern of connections between the local interneurons forms the basis of the circuitry for the local reflex adjustments of posture and locomotion. Expand
Encoding of Olfactory Information with Oscillating Neural Assemblies
TLDR
It is proposed that odors are encoded by specific but dynamic assemblies of coherently oscillating neurons that facilitate combinatorial coding and associative learning in these, and possibly other, sensory networks. Expand
...
1
2
3
4
...