Nociceptive inputs to C3, a motoneuron of the tentacle withdrawal reflex in Helix aspersa

Chase, Ronald; Hall, Brandon

doi:10.1007/bf00207359

Cited by 15 publications

(12 citation statements)

References 23 publications

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“…In Helix, the C3 neuron is known as a posterior tentacle motor neuron involved in the tentacle withdrawal reflex (Chase and Hall, 1996;Prescott and Chase, 1999;Prescott et al, 1997). In A. californica, some components of the defensive head withdrawal response were produced by a subpopulation of the cerebral B cluster neurons (Teyke et al, 1989).…”

Section: Discussionmentioning

confidence: 98%

Search for cerebral G cluster neurons responding to taste stimulation with seaweed in Aplysia kurodai by the use of calcium imaging

Yoshida

Nagahama

2003

J. Neurobiol.

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The calcium imaging method can detect the spike activities of many neurons simultaneously. In the present experiments, this method was used to search for unique neurons contributing to feeding behavior in the cerebral ganglia of Aplysia kurodai. We mainly explored the neurons whose cell bodies were located in the G cluster and the neuropile region posterior to this cluster on the ventral surface of the cerebral ganglia. When the extract of the food seaweed Ulva was applied to the tentacle-lip region, many neurons stained with a calcium-sensitive dye, Calcium Green-1, showed changes in fluorescence. Some neurons showed rhythmic responses and others showed transient responses, suggesting that these neurons may be partly involved in the feeding circuits. We also identified three motor neurons among these neurons that showed rhythmic fluorescence responses to the taste stimulation. One of them was a motor neuron shortening the anterior tentacle (ATS), and the other two were motor neurons producing lip opening-like (LO(G)) and closing-like (LC(G)) movements, respectively. Application of the Ulva extract to the tentacle-lip region induced phase-locked rhythmic firing activity in these motor neurons, suggesting that these neurons may contribute to the rhythmic patterned movements of the anterior tentacles and lips during the ingestion of seaweed.

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Section: Discussionmentioning

confidence: 98%

Search for cerebral G cluster neurons responding to taste stimulation with seaweed in Aplysia kurodai by the use of calcium imaging

Yoshida

Nagahama

2003

J. Neurobiol.

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“…Three neurons located in Focus 3 with putative motor function have been identified (Herná di et al, 1987;Kemenes et al, 1982Kemenes et al, , 1985, suggesting that neurons in Focus 3 may have motor function. The identified FMRFa-containing neuron (Cottrell et al, 1983) located in Focus 7 proved to be a motor neuron in the tentacle withdrawal reflex (Bewick et al, 1990) responding to nociceptive inputs in Helix aspersa (Chase and Hall, 1996). Many neurons in the right mesocerebrum (Focus 7) of Helix aspersa proved to be premotor neurons initiating movements of sexual organs (Chase, 1986).…”

Section: Discussionmentioning

confidence: 99%

“…A motor neuron having role in the nociceptive reaction of posterior tentacles has been identified in Helix aspersa (Chase and Hall 1996) and putative motor neurons in the cerebral ganglia of Helix pomatia (Kemenes et al, 1982;Herná di et al 1987). The findings that clusters of both sensory and motor neurons exist in the different ganglia of gastropods suggest that the central neurons can be separated according to their modalities, such as sensory, inter, or motor neurons in the CNS.…”

Section: Introductionmentioning

confidence: 99%

Topographic organization of efferent neurons with different neurochemical characters in the cerebral ganglia of the snailHelix pomatia

Hernádi

2000

Microsc. Res. Tech.

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“…Stimuli were delivered at two strengths as indicated above the bars. A reproduced from Chase and Hall (1996), B and C from Prescott et al (1997) with permission of the publishers. zko, 1992).…”

Section: Metacerebrummentioning

confidence: 99%

Structure and function in the cerebral ganglion

Chase

2000

Microsc. Res. Tech.

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Evidence is reviewed to evaluate whether the term "brain" is justified in referring to the snail's cerebral ganglion. The focus of the review is terrestrial species, with particular attention given to the genus Helix. In accordance with a standard definition of "brain," the cerebral ganglion is found to be differentiated both structurally and functionally. It receives convergent sensory inputs from a variety of anterior sensory organs plus the posterior body wall. Its outputs comprise motor commands directed towards anterior muscle systems, e.g., the tentacles and the penis, as well as premotor commands directed towards executory centers in other ganglia, e.g., the buccal, visceral, and pedal ganglia. Of the three major divisions in the ganglion, the procerebrum and the mesocerebrum are the most differentiated, whereas the metacerebrum is the least differentiated. The specializations of the procerebrum for olfactory functions, and the mesocerebrum for reproductive functions, reflect the importance of adaptations for feeding and mating in the evolution of the Gastropoda.

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Nociceptive inputs to C3, a motoneuron of the tentacle withdrawal reflex in Helix aspersa

Cited by 15 publications

References 23 publications

Search for cerebral G cluster neurons responding to taste stimulation with seaweed in Aplysia kurodai by the use of calcium imaging

Search for cerebral G cluster neurons responding to taste stimulation with seaweed in Aplysia kurodai by the use of calcium imaging

Topographic organization of efferent neurons with different neurochemical characters in the cerebral ganglia of the snailHelix pomatia

Structure and function in the cerebral ganglion

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