Development of neurons in the abdominal ganglion of Aplysia californica

1979 ◽  
Vol 71 (1) ◽  
pp. 176-190 ◽  
Author(s):  
Samuel Schacher ◽  
Eric R. Kandel ◽  
Robert Woolley
Keyword(s):  
Aplysia Californica ◽  
Abdominal Ganglion

The time-dependent diffusivity in the abdominal ganglion of Aplysia californica: experiments and simulations

2019 ◽  
Vol 5 (4) ◽  
pp. 045036
Author(s):  
Khieu-Van Nguyen ◽  
Denis Le Bihan ◽  
Luisa Ciobanu ◽  
Jing-Rebecca Li
Keyword(s):  
Aplysia Californica ◽  
Abdominal Ganglion ◽  
Time Dependent

MORPHOLOGICAL AND FUNCTIONAL PROPERTIES OF IDENTIFIED NEURONS IN THE ABDOMINAL GANGLION OF APLYSIA CALIFORNICA

1967 ◽  
Vol 30 (6) ◽  
pp. 1288-1351 ◽  
Author(s):  
Wesley T. Frazier ◽  
Eric R. Kandel ◽  
Irving Kupfermann ◽  
Rafiq Waziri ◽  
Richard E. Coggeshall
Keyword(s):  
Functional Properties ◽  
Aplysia Californica ◽  
Abdominal Ganglion ◽  
Identified Neurons

Neural control of circulation in Aplysia. III. Neurotransmitters

1975 ◽  
Vol 38 (4) ◽  
pp. 767-779 ◽  
Author(s):  
G. Liebeswar ◽  
J. E. Goldman ◽  
J. Koester ◽  
E. Mayeri
Keyword(s):  
Cell Body ◽  
Neural Control ◽  
Aplysia Californica ◽  
Heart Beat ◽  
Abdominal Ganglion ◽  
Vasomotor Tone ◽  
Aortic Constriction ◽  
Chronotropic Effects ◽  
Inhibitory Motoneuron ◽  
Motor Effects

In the abdominal ganglion of Aplysia californica, seven motoneurons have been described which modulate the myogenic heart beat and vasomotor tone (28). These neurons mediate their motor effects by chemical transmission. In this paper we have attempted to specify the transmitters of six of these motoneurons. We have 1) studied the effects of several common transmitters on the innervated structures and compared these effects with the effects of firing the motoneurons, 2) examined whether blocking agents influence similarly the effect of a putative transmitter applied to the innervated structure and the effect of firing a motoneuron, and 3) tested the capability of the motoneurons to synthesize the putative transmitters from precursors. The positive inotropic and chronotropic effects of firing the excitor motoneuron RB(HE) were mimicked by perfusion of the heart with serotonin at a low concentration. Cinanserin blocked both the effects of motoneuron excitation and serotonin perfusion. RB(HE) was also shown to synthesize [3H]serotonin from L-[3H]tryptophan injected directly into the cell body. The effects of firing the two LD(HI) heart-inhibitory motoneurons were mimicked by perfusion of the heart with acetylcholine. Benzoquinonium blocked the effects of the inhibitory motoneuron and acetylcholine perfusion. Perfusion with arecoline also inhibited the heart beat. Acetylcholine applied to the arteries mimicked the vasoconstriction caused by the LB(VC) motoneurons. Aortic constriction in response to activity in LB(VC) cells or to acetylcholine was blocked by hexamethonium and curare. The heart inhibitor and vasoconstrictor motoneurons synthesized [3H] acetylcholine from [3H] choline injected into their cell bodies. Thus, as in vertebrates, acetylcholine mediates inhibition to the heart. Unlike vertebrates, however, serotonin mediates excitation to the heart and acetylcholine mediates peripheral vasoconstriction.

Receptive fields and properties of a new cluster of mechanoreceptor neurons innervating the mantle region and the branchial cavity of the marine mollusk Aplysia californica

1991 ◽  
Vol 156 (1) ◽  
pp. 315-334
Author(s):  
B. Dubuc ◽  
V. F. Castellucci
Keyword(s):  
Motor Neurons ◽  
Action Potentials ◽  
Aplysia Californica ◽  
Receptive Fields ◽  
Abdominal Ganglion ◽  
Sensory Cells ◽  
Sensory Threshold ◽  
Marine Mollusk ◽  
Withdrawal Reflex ◽  
Branchial Cavity

The rostral LE cluster (rLE) is a new set of mechanoreceptor neurons of the abdominal ganglion innervating the mantle area, the branchial cavity, the gill and the siphon of the marine mollusk Aplysia californica Cooper. We have compared the organization of rLE cell receptive fields with that of three other clusters of sensory neurons in the abdominal ganglion (LE, RE and RF) that we have reanalysed. There is extensive overlap of receptive fields from the four populations of sensory cells, and the most exposed areas of the mantle are the most densely innervated. The sensory threshold is similar for all groups. The action potentials of the LE, rLE and RE neurons are broadened by serotonin and the peptide SCPB and narrowed by dopamine and FMRFamide. The RF group does not show the same kind of sensitivity to these neuromodulators. The synaptic outputs of the LE and rLE neurons undergo similar synaptic depression and homosynaptic and heterosynaptic facilitation. We estimate that 100 mechanoreceptor neurons innervate the entire mantle and siphon skin, gill and branchial cavity of Aplysia. The degree of their convergence onto various interneurons and motor neurons mediating the gill- and siphon-withdrawal reflex and other reflexes is under investigation.

scholarly journals The effect of potassium chloride on Aplysia Californica abdominal ganglion activity

2018 ◽  
Vol 4 (3) ◽  
pp. 035033
Author(s):  
Fanrui Fu ◽  
Munish Chauhan ◽  
Rosalind Sadleir
Keyword(s):  
Potassium Chloride ◽  
Aplysia Californica ◽  
Abdominal Ganglion
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