Spontaneous firing in primary afferent neurons of ampullary electroreceptor organs as attribute of bandwidth, threshold, and topology

Spontaneous firing in primary afferent neurons of ampullary electroreceptor organs as attribute... © Koninklijke Brill NV, Leiden, 2008 DOI: 10.1163/157075608X344622 Animal Biology 58 (2008) 301–312 www.brill.nl/ab Spontaneous fi ring in primary aff erent neurons of ampullary electroreceptor organs as attribute of bandwidth, threshold, and topology Robert C. Peters * , Franklin Bretschneider , Lonneke B. M. Eeuwes Functional Neurobiology, Utrecht University, Padualaan 8, 3584 CH Utrecht, Th e Netherlands Abstract Spontaneous fi ring 1 of neurons plays an essential part in the detection of sensory stimuli. Spontaneous fi ring of primary aff erents of ampullary electroreceptor organs in the catfi sh Ameiurus nebulosus (Lesueur, 1819) was studied in relation to the distribution, thresholds, and frequency characteristics of the electroreceptor organs. Th e spontaneous fi ring rate was correlated with the place on the skin. Th e mean inter-spike interval in 55 dorsal and 49 ventral ampullary organs in fi ve specimens was 16.8 ms +/- 0.41 SEM and 20.5 ms +/- 0.48 SEM, corresponding to fi ring rates of 59.5 and 48.7 s -1 respectively. Th e concomitant coeffi cients of variation were 0.33 and 0.29. Approximately half of the dorsal ampullae were innervated by two fi bres. Th e fi ring rates of each of the two fi bres http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Animal Biology Brill

Spontaneous firing in primary afferent neurons of ampullary electroreceptor organs as attribute of bandwidth, threshold, and topology

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Publisher
Brill
Copyright
© 2008 Koninklijke Brill NV, Leiden, The Netherlands
ISSN
1570-7555
eISSN
1570-7563
DOI
10.1163/157075608X344622
Publisher site
See Article on Publisher Site

Abstract

© Koninklijke Brill NV, Leiden, 2008 DOI: 10.1163/157075608X344622 Animal Biology 58 (2008) 301–312 www.brill.nl/ab Spontaneous fi ring in primary aff erent neurons of ampullary electroreceptor organs as attribute of bandwidth, threshold, and topology Robert C. Peters * , Franklin Bretschneider , Lonneke B. M. Eeuwes Functional Neurobiology, Utrecht University, Padualaan 8, 3584 CH Utrecht, Th e Netherlands Abstract Spontaneous fi ring 1 of neurons plays an essential part in the detection of sensory stimuli. Spontaneous fi ring of primary aff erents of ampullary electroreceptor organs in the catfi sh Ameiurus nebulosus (Lesueur, 1819) was studied in relation to the distribution, thresholds, and frequency characteristics of the electroreceptor organs. Th e spontaneous fi ring rate was correlated with the place on the skin. Th e mean inter-spike interval in 55 dorsal and 49 ventral ampullary organs in fi ve specimens was 16.8 ms +/- 0.41 SEM and 20.5 ms +/- 0.48 SEM, corresponding to fi ring rates of 59.5 and 48.7 s -1 respectively. Th e concomitant coeffi cients of variation were 0.33 and 0.29. Approximately half of the dorsal ampullae were innervated by two fi bres. Th e fi ring rates of each of the two fi bres

Journal

Animal BiologyBrill

Published: Jan 1, 2008

Keywords: CARRIER FREQUENCY; SPONTANEOUS ACTIVITY; AMEIURUS NEBULOSUS; SENSITIVITY; PRIMARY AFFERENT FIBRES; GLUTAMATERGIC SYNAPSE; RESTING DISCHARGE; DETECTION THRESHOLD; ELECTRORECEPTION; BANDWIDTH

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