Octopamine selectively modifies the slow component of sensory adaptation in an insect mechanoreceptor

B. G. Zhang; P. H. Torkkeli; A. S. French

doi:10.1016/0006-8993(92)91719-U

Octopamine selectively modifies the slow component of sensory adaptation in an insect mechanoreceptor

B. G. Zhang, P. H. Torkkeli, A. S. French

Research output: Contribution to journal › Article › peer-review

22 Citations (Scopus)

Abstract

The effects of octopamine were studied on the dynamic behavior of the sensory neuron in the cockroach femoral tactile spine. The neuron is a rapidly adapting mechanoreceptor in which adaptation occurs by elevation of the threshold for action potential encoding. The threshold follows increases or decreases of membrane potential, with a delay that involves two separate exponential components. Previous evidence has associated the slow component with sodium pumping and the fast component with sodium channel inactivation. Octopamine reversibly raised the resting threshold and increased but slowed the slow component. These data indicate that octopamine has specific effects on membrane-ionic processes in insect sensory neurons.

Original language	English
Pages (from-to)	351-355
Number of pages	5
Journal	Brain Research
Volume	591
Issue number	2
DOIs	https://doi.org/10.1016/0006-8993(92)91719-U
Publication status	Published - Sept 25 1992
Externally published	Yes

Bibliographical note

Funding Information:
Support for this work was provided by the Medical Research Council of Canada and the Alberta Heritage Foundation for Medical Research.

ASJC Scopus Subject Areas

General Neuroscience
Molecular Biology
Clinical Neurology
Developmental Biology

PubMed: MeSH publication types

Comparative Study
Journal Article
Research Support, Non-U.S. Gov't

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10.1016/0006-8993(92)91719-U

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abstract = "The effects of octopamine were studied on the dynamic behavior of the sensory neuron in the cockroach femoral tactile spine. The neuron is a rapidly adapting mechanoreceptor in which adaptation occurs by elevation of the threshold for action potential encoding. The threshold follows increases or decreases of membrane potential, with a delay that involves two separate exponential components. Previous evidence has associated the slow component with sodium pumping and the fast component with sodium channel inactivation. Octopamine reversibly raised the resting threshold and increased but slowed the slow component. These data indicate that octopamine has specific effects on membrane-ionic processes in insect sensory neurons.",

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AU - Torkkeli, P. H.

AU - French, A. S.

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PY - 1992/9/25

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AB - The effects of octopamine were studied on the dynamic behavior of the sensory neuron in the cockroach femoral tactile spine. The neuron is a rapidly adapting mechanoreceptor in which adaptation occurs by elevation of the threshold for action potential encoding. The threshold follows increases or decreases of membrane potential, with a delay that involves two separate exponential components. Previous evidence has associated the slow component with sodium pumping and the fast component with sodium channel inactivation. Octopamine reversibly raised the resting threshold and increased but slowed the slow component. These data indicate that octopamine has specific effects on membrane-ionic processes in insect sensory neurons.

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Octopamine selectively modifies the slow component of sensory adaptation in an insect mechanoreceptor

Abstract

Bibliographical note

ASJC Scopus Subject Areas

PubMed: MeSH publication types

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