The Electric Sense of the Thornback Ray, Platyrhinoidis triseriata : Linear Dynamic Range in Single-Unit Electrophysiological Recordings in vivo from the Afferent Nerve Fibers of the Ampullae of Lorenzini
Elasmobranch fishes use their electroreceptive organs, the Ampullae of Lorenzini, to sense DC and low-frequency electric fields in the ocean. The natural environment offers a wide range of electric field strengths, from typically less than 5 nV/cm in the rapidly falling fields a meter away from hidd...
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ftcdlib:qt2zn2m819 2023-05-15T17:34:26+02:00 The Electric Sense of the Thornback Ray, Platyrhinoidis triseriata : Linear Dynamic Range in Single-Unit Electrophysiological Recordings in vivo from the Afferent Nerve Fibers of the Ampullae of Lorenzini Gonzalez, Ivan F 2008-06-30 application/pdf http://www.escholarship.org/uc/item/2zn2m819 english eng eScholarship, University of California qt2zn2m819 http://www.escholarship.org/uc/item/2zn2m819 public Gonzalez, Ivan F. (2008). The Electric Sense of the Thornback Ray, Platyrhinoidis triseriata : Linear Dynamic Range in Single-Unit Electrophysiological Recordings in vivo from the Afferent Nerve Fibers of the Ampullae of Lorenzini. Scripps Institution of Oceanography. UC San Diego: Scripps Institution of Oceanography. Retrieved from: http://www.escholarship.org/uc/item/2zn2m819 article 2008 ftcdlib 2016-04-02T18:40:55Z Elasmobranch fishes use their electroreceptive organs, the Ampullae of Lorenzini, to sense DC and low-frequency electric fields in the ocean. The natural environment offers a wide range of electric field strengths, from typically less than 5 nV/cm in the rapidly falling fields a meter away from hidden prey to 500 nV/cm in the wind-driven currents of the North Atlantic. In contrast, electrophysiological recordings from the electroreceptor's afferent nerves show a limited dynamic range in response to low-frequency sinusoidal stimuli, with non-linearity starting at amplitudes only eight times the organ's sensitivity threshold (Von Arx 1962, Kalmijn 1974). We employ in vivo recordings from the hyomandibular nerve of the thornback ray, Platyrhinoidis triseriata, to explore the physiological mechanisms exercised by elasmobranch fishes to extend their electroreceptor's sensory dynamic range in widely ranging ambient electric field strengths. We measure the organ's nerve activity in response to DC fields, to low-frequency sinusoidal electric stimuli in the presence of various DC fields and to low-frequency sinusoidal electric stimuli of different relative orientation. When possible, we record and analyze the simultaneous activity of two nerve fibers during the experiment. We propose that the animal may extend its electroreceptor's linear dynamic range of operation by using the organ's adaptation to DC fields and directional response in combination with previously described behavioral mechanisms that modulate, and sometimes produce, the effective stimulus. Article in Journal/Newspaper North Atlantic University of California: eScholarship |
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Open Polar |
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University of California: eScholarship |
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language |
English |
description |
Elasmobranch fishes use their electroreceptive organs, the Ampullae of Lorenzini, to sense DC and low-frequency electric fields in the ocean. The natural environment offers a wide range of electric field strengths, from typically less than 5 nV/cm in the rapidly falling fields a meter away from hidden prey to 500 nV/cm in the wind-driven currents of the North Atlantic. In contrast, electrophysiological recordings from the electroreceptor's afferent nerves show a limited dynamic range in response to low-frequency sinusoidal stimuli, with non-linearity starting at amplitudes only eight times the organ's sensitivity threshold (Von Arx 1962, Kalmijn 1974). We employ in vivo recordings from the hyomandibular nerve of the thornback ray, Platyrhinoidis triseriata, to explore the physiological mechanisms exercised by elasmobranch fishes to extend their electroreceptor's sensory dynamic range in widely ranging ambient electric field strengths. We measure the organ's nerve activity in response to DC fields, to low-frequency sinusoidal electric stimuli in the presence of various DC fields and to low-frequency sinusoidal electric stimuli of different relative orientation. When possible, we record and analyze the simultaneous activity of two nerve fibers during the experiment. We propose that the animal may extend its electroreceptor's linear dynamic range of operation by using the organ's adaptation to DC fields and directional response in combination with previously described behavioral mechanisms that modulate, and sometimes produce, the effective stimulus. |
format |
Article in Journal/Newspaper |
author |
Gonzalez, Ivan F |
spellingShingle |
Gonzalez, Ivan F The Electric Sense of the Thornback Ray, Platyrhinoidis triseriata : Linear Dynamic Range in Single-Unit Electrophysiological Recordings in vivo from the Afferent Nerve Fibers of the Ampullae of Lorenzini |
author_facet |
Gonzalez, Ivan F |
author_sort |
Gonzalez, Ivan F |
title |
The Electric Sense of the Thornback Ray, Platyrhinoidis triseriata : Linear Dynamic Range in Single-Unit Electrophysiological Recordings in vivo from the Afferent Nerve Fibers of the Ampullae of Lorenzini |
title_short |
The Electric Sense of the Thornback Ray, Platyrhinoidis triseriata : Linear Dynamic Range in Single-Unit Electrophysiological Recordings in vivo from the Afferent Nerve Fibers of the Ampullae of Lorenzini |
title_full |
The Electric Sense of the Thornback Ray, Platyrhinoidis triseriata : Linear Dynamic Range in Single-Unit Electrophysiological Recordings in vivo from the Afferent Nerve Fibers of the Ampullae of Lorenzini |
title_fullStr |
The Electric Sense of the Thornback Ray, Platyrhinoidis triseriata : Linear Dynamic Range in Single-Unit Electrophysiological Recordings in vivo from the Afferent Nerve Fibers of the Ampullae of Lorenzini |
title_full_unstemmed |
The Electric Sense of the Thornback Ray, Platyrhinoidis triseriata : Linear Dynamic Range in Single-Unit Electrophysiological Recordings in vivo from the Afferent Nerve Fibers of the Ampullae of Lorenzini |
title_sort |
electric sense of the thornback ray, platyrhinoidis triseriata : linear dynamic range in single-unit electrophysiological recordings in vivo from the afferent nerve fibers of the ampullae of lorenzini |
publisher |
eScholarship, University of California |
publishDate |
2008 |
url |
http://www.escholarship.org/uc/item/2zn2m819 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Gonzalez, Ivan F. (2008). The Electric Sense of the Thornback Ray, Platyrhinoidis triseriata : Linear Dynamic Range in Single-Unit Electrophysiological Recordings in vivo from the Afferent Nerve Fibers of the Ampullae of Lorenzini. Scripps Institution of Oceanography. UC San Diego: Scripps Institution of Oceanography. Retrieved from: http://www.escholarship.org/uc/item/2zn2m819 |
op_relation |
qt2zn2m819 http://www.escholarship.org/uc/item/2zn2m819 |
op_rights |
public |
_version_ |
1766133268126629888 |