Learned changes of respiratory pump rate in response to lowered pH in Aplysia

Miriam Levy; Abraham J. Susswein

doi:10.1016/0163-1047(90)90606-7

Learned changes of respiratory pump rate in response to lowered pH in Aplysia

Miriam Levy
, Abraham J. Susswein

Bar-Ilan University

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

7 Scopus citations

Abstract

Respiratory pumping in the marine gastropod Aplysia is a well-characterized behavior controlled by identified neurons. The behavior is affected by stimuli such as change in ambient pH and shock. This study investigates learned changes in effects of these stimuli on rate of respiratory pumping movements. A sharp threshold exists for effects of environmental pH on respiratory pumping. Lowering the ambient pH from 7.8 to 7.0 does not affect the rate of respiratory pumping movements, but when pH is decreased further to 6.5 a large increase in pump rate is seen. Sensitizing stimuli, such as brief head shock and preexposure to pH 7.0, change the threshold so that respiratory pumping rate is increased in pH 7.0. Pairing exposure to pH 7.0 with head shock leads to pairing-specific amplification of the response in pH 7.0 alone. Pairing-specific consequences can be distinguished from sensitization only after an hour.

Original language	English
Pages (from-to)	218-233
Number of pages	16
Journal	Behavioral and Neural Biology
Volume	54
Issue number	3
DOIs	https://doi.org/10.1016/0163-1047(90)90606-7
State	Published - Nov 1990

Bibliographical note

Funding Information:
We thank Sylvia Markovich for help with some experiments, and Yair Achituv, Miriam Schwarz, Israel Ziv, and Itai Horowitz for comments on an earlier draft of the manuscript. This paper presents data that are part of a Ph.D. dissertation by Miriam Levy. The work was supported in part by the Israel Institute for Psychobiology-Charles E. Smith Family Foundation Grant 17/88, and by the Health Sciences Research Center of Bar-Ilan University. Send reprint requests to Dr. Susswein.

Funding

We thank Sylvia Markovich for help with some experiments, and Yair Achituv, Miriam Schwarz, Israel Ziv, and Itai Horowitz for comments on an earlier draft of the manuscript. This paper presents data that are part of a Ph.D. dissertation by Miriam Levy. The work was supported in part by the Israel Institute for Psychobiology-Charles E. Smith Family Foundation Grant 17/88, and by the Health Sciences Research Center of Bar-Ilan University. Send reprint requests to Dr. Susswein.

Funders	Funder number
Health Sciences Research Center of Bar-Ilan University
Israel Institute for Psychobiology-Charles E. Smith Family Foundation	17/88

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 14 Life Below Water

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10.1016/0163-1047(90)90606-7

Cite this

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title = "Learned changes of respiratory pump rate in response to lowered pH in Aplysia",

abstract = "Respiratory pumping in the marine gastropod Aplysia is a well-characterized behavior controlled by identified neurons. The behavior is affected by stimuli such as change in ambient pH and shock. This study investigates learned changes in effects of these stimuli on rate of respiratory pumping movements. A sharp threshold exists for effects of environmental pH on respiratory pumping. Lowering the ambient pH from 7.8 to 7.0 does not affect the rate of respiratory pumping movements, but when pH is decreased further to 6.5 a large increase in pump rate is seen. Sensitizing stimuli, such as brief head shock and preexposure to pH 7.0, change the threshold so that respiratory pumping rate is increased in pH 7.0. Pairing exposure to pH 7.0 with head shock leads to pairing-specific amplification of the response in pH 7.0 alone. Pairing-specific consequences can be distinguished from sensitization only after an hour.",

author = "Miriam Levy and Susswein, \{Abraham J.\}",

note = "Funding Information: We thank Sylvia Markovich for help with some experiments, and Yair Achituv, Miriam Schwarz, Israel Ziv, and Itai Horowitz for comments on an earlier draft of the manuscript. This paper presents data that are part of a Ph.D. dissertation by Miriam Levy. The work was supported in part by the Israel Institute for Psychobiology-Charles E. Smith Family Foundation Grant 17/88, and by the Health Sciences Research Center of Bar-Ilan University. Send reprint requests to Dr. Susswein.",

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N2 - Respiratory pumping in the marine gastropod Aplysia is a well-characterized behavior controlled by identified neurons. The behavior is affected by stimuli such as change in ambient pH and shock. This study investigates learned changes in effects of these stimuli on rate of respiratory pumping movements. A sharp threshold exists for effects of environmental pH on respiratory pumping. Lowering the ambient pH from 7.8 to 7.0 does not affect the rate of respiratory pumping movements, but when pH is decreased further to 6.5 a large increase in pump rate is seen. Sensitizing stimuli, such as brief head shock and preexposure to pH 7.0, change the threshold so that respiratory pumping rate is increased in pH 7.0. Pairing exposure to pH 7.0 with head shock leads to pairing-specific amplification of the response in pH 7.0 alone. Pairing-specific consequences can be distinguished from sensitization only after an hour.

AB - Respiratory pumping in the marine gastropod Aplysia is a well-characterized behavior controlled by identified neurons. The behavior is affected by stimuli such as change in ambient pH and shock. This study investigates learned changes in effects of these stimuli on rate of respiratory pumping movements. A sharp threshold exists for effects of environmental pH on respiratory pumping. Lowering the ambient pH from 7.8 to 7.0 does not affect the rate of respiratory pumping movements, but when pH is decreased further to 6.5 a large increase in pump rate is seen. Sensitizing stimuli, such as brief head shock and preexposure to pH 7.0, change the threshold so that respiratory pumping rate is increased in pH 7.0. Pairing exposure to pH 7.0 with head shock leads to pairing-specific amplification of the response in pH 7.0 alone. Pairing-specific consequences can be distinguished from sensitization only after an hour.

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Learned changes of respiratory pump rate in response to lowered pH in Aplysia

Abstract

Bibliographical note

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UN SDGs

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