Optical monitoring of the neural activity evoked by mechanical stimulation in the earthworm nervous system with a fluorescent dye, FM1-43

Shimizu, R.; Oka, Kotaro; Ogawa, Hiroto; Suzuki, Koji; Saito, Junichi; Mizutani, Kenji; Tanishita, Kazuo

doi:10.1016/s0304-3940(99)00400-0

Cited by 11 publications

(2 citation statements)

References 14 publications

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“…The second mechanism is learning. In recent years, electrophysiological and imaging experiments of earthworms have been conducted to reveal their mechanism for learning and memory [ 12 – 14 ]. The third mechanism is perception of the state of environment.…”

Section: Discussionmentioning

confidence: 99%

“…Earthworms are a promising study organism for examining the interactions between innate and learned behaviors on a microscopic level. In fact, recent studies have conducted electrophysiological and imaging experiments using earthworms to investigate mechanisms of learning and memory [ 12 – 14 ]. Earthworms have also been used in studies of turn alternation [ 5 , 15 , 16 ] and learning [ 17 – 19 ].…”

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confidence: 99%

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Earthworm individualities when facing a conflict between turn alternation and aversive learning

2018

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An individual’s personality develops through a combination of experiences and parental inheritance. When faced with a conflict, will an individual take an innate behavior or a learned one? In such situations, individuality will manifest itself. Here, we focused on turn alternation behavior, which is a habitual tendency to turn in the direction opposite the preceding turn, in earthworms (Eisenia fetida) and examined how this behavior is affected by an aversive stimulus. Of 10 earthworms, 3 were affected by the stimulus. Turn alternation deteriorated in two worms, one of which showed anti-turn alternation behavior, whereas the remaining worm showed an enhanced tendency toward turn alternation. Earthworms have a relatively simple nervous system. This study opens the door to investigate the neuronal basis for individuality that emerges between nature and nurture.

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Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

Earthworm individualities when facing a conflict between turn alternation and aversive learning

2018

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Optical Imaging Techniques for Investigating the Function of Earthworm Nervous System

Oka

Ogawa

2013

Methods in Neuroethological Research

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Vital Staining of Nerve Structures with Fluorescent Dyes and Optical Determination of Acetylcholine in the Somatic Muscle of the Earthworm Lumbricus terrestris

Volkov

2012

Bull Exp Biol Med

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Experiments with fluorescent dyes showed that high concentrations of K(+) ions in the medium depolarize the membrane and enhance exo-endocytosis in nerve structures, which is accompanied by an increase in acetylcholine concentration in the somatic muscle of earthworm. In the presence of BAPTA and without Ca(2+) exo-endocytosis is sharply decelerated, the level of acetylcholine in the muscle decreases, but remains relatively high.

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Optical monitoring of the neural activity evoked by mechanical stimulation in the earthworm nervous system with a fluorescent dye, FM1-43

Cited by 11 publications

References 14 publications

Earthworm individualities when facing a conflict between turn alternation and aversive learning

Earthworm individualities when facing a conflict between turn alternation and aversive learning

Optical Imaging Techniques for Investigating the Function of Earthworm Nervous System

Vital Staining of Nerve Structures with Fluorescent Dyes and Optical Determination of Acetylcholine in the Somatic Muscle of the Earthworm Lumbricus terrestris

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