Changes in the protein metabolism of the CNS of a teleost following stimulation of the lateral-line organ

1976 ◽  
Vol 26 (3) ◽  
Author(s):  
R. Hilbig ◽  
H. Rahmann
Keyword(s):  
Lateral Line ◽  
Protein Metabolism ◽  
Lateral Line Organ ◽  
Line Organ ◽  
Stimulation Of

Effects of calcitonin gene-related peptide and efferent nerve stimulation on afferent transmission in the lateral line organ

1991 ◽  
Vol 65 (5) ◽  
pp. 1158-1169 ◽  
Author(s):  
W. F. Sewell ◽  
P. A. Starr
Keyword(s):  
Electrical Stimulation ◽  
Lateral Line ◽  
Discharge Rate ◽  
Spontaneous Discharge ◽  
Efferent Nerve ◽  
Lateral Line Organ ◽  
Calcitonin Gene ◽  
Afferent Discharge ◽  
Line Organ ◽  
Stimulation Of

1. Calcitonin gene-related peptide (CGRP) is a 37-amino acid peptide immunolocalized in efferent fibers innervating hair-cell organs, including the lateral line organ of Xenopus laevis. CGRP, applied in nanomolar concentrations, increased the spontaneous discharge rate in afferent fibers innervating hair cells of the lateral line organ. 2. The increase in spontaneous discharge rate with application of CGRP was associated with an increase in the rate of occurrence of spontaneous excitatory postsynaptic potentials (EPSPs) and with little change in the amplitude of the EPSPs. 3. Prolonged (several hundred seconds) application of CGRP produced an increase in afferent fiber discharge rate that returned to control values in the continued presence of the peptide. 4. Efferent fibers were electrically stimulated to look for a non-cholinergic effect on spontaneous afferent discharge that might be attributed to CGRP. Electrical stimulation of the efferent fibers produced a rapid (100 ms) suppression of discharge rate followed by a rapid (100 ms) increase in discharge rate. However, both the rapid suppression and rapid excitation were likely to be mediated by the release of acetylcholine, because they were blocked by the application of the cholinergic blocking agents curare and atropine as well as by strychnine. 5. In almost one-half of the preparations examined, electrical stimulation of efferent fibers also produced a slowly developing increase in afferent discharge that could persist for several minutes after termination of the shocks. 6. This slow excitation by efferent stimulation was not blocked by concentrations of curare that blocked the rapid effects of efferent stimulation. Thus the slow effect is likely to be mediated by a receptor different from that for the rapid cholinergic effects. One possibility is that the excitation is mediated by the release of CGRP from the efferent nerve fibers.

Extracellular Receptor Potentials from the Lateral-Line Organ of Xenopus Laevis

1980 ◽  
Vol 86 (1) ◽  
pp. 63-77
Author(s):  
ALFONS B. A. KROESE ◽  
JOHAN M. VAN DER ZALM ◽  
JOEP VAN DEN BERCKEN
Keyword(s):  
Xenopus Laevis ◽  
Lateral Line ◽  
Hair Cells ◽  
Water Displacement ◽  
Stimulus Amplitude ◽  
Nerve Fibres ◽  
Large Stimulus ◽  
Sensory Hair ◽  
Lateral Line Organ ◽  
Line Organ

1. The response of the epidermal lateral-line organ of Xenopus laevis to stimulation was studied by recording extracellular receptor potentials from the hair cells in single neuromasts in isolated preparations. One neuromast was stimulated by local, sinusoidal water movements induced by a glass sphere positioned at a short distance from the neuromast. 2. The amplitudes of the extracellular receptor potentials were proportional to the stimulus amplitude over a range of 20 dB. The phase of the extracellular receptor potentials with respect to water displacement was independent of the stimulus amplitude. 3. With large stimulus amplitude, and stimulus frequencies between 0.5 Hz and 2 Hz, the extracellular receptor potentials, and responses of single afferent nerve fibres, showed a phase lead of 1.2 π radians with respect to water displacement, i.e. they were almost in phase with water acceleration. 4. It is concluded that under conditions of stimulation with small-amplitude water movements, the hair cells respond to sensory hair displacement, whereas under conditions of stimulation with large-amplitude water movements they respond to sensory hair velocity.

Electroreceptors and Direction Specific Arrangement in the Lateral Line System of Salamanders?

1981 ◽  
Vol 36 (5-6) ◽  
pp. 493-496 ◽  
Author(s):  
Bernd Fritzsch
Keyword(s):  
Lateral Line ◽  
Fiber Bundles ◽  
Sensory Cells ◽  
Lateral Line System ◽  
Line System ◽  
Lateral Line Organ ◽  
Posterior Lateral Line ◽  
Afferent Fibers ◽  
Lateral Line Afferents ◽  
Line Organ

Abstract The arrangement of the lateral line afferents of salamanders as revealed by transganglionic staining with horse­ radish peroxidase is described. Each lateral line organ is supplied by two fibers only. In the medulla these two afferent fibers run in separate fiber bundles. It is suggested, that only those fibers contacting lateral line sensory cells with the same polarity form together one bundle. Bundles formed by anterior or posterior lateral line afferents are also clearly separated. Beside the lateral line organs smaller pit organs are described. These organs are supplied by one afferent only which reveals an arrangement in the medulla different from that of the lateral line afferents. Based on anatomical facts, these small pit organs are considered to be electroreceptors. Centrifugally projecting neurons, most probably efferents, are described in the medulla.

scholarly journals Effects of neomycin on the lateral-line organ of the mudpuppy.

1979 ◽  
Vol 55 (7) ◽  
pp. 374-379 ◽  
Author(s):  
Kouichi SHIOZAWA ◽  
Keiji YANAGISAWA
Keyword(s):  
Lateral Line ◽  
Lateral Line Organ ◽  
Line Organ

MATCHED PERIPHERAL FILTERING IN THE LATERAL LINE ORGAN AND RELATION TO TEMPERATURE

Bioacoustics ◽  
2002 ◽  
Vol 12 (2-3) ◽  
pp. 153-156 ◽  
Author(s):  
SIETSE M. VAN NETTEN ◽  
J. ESTHER C. WIERSINGA-POST
Keyword(s):  
Lateral Line ◽  
Lateral Line Organ ◽  
Line Organ

An Electronmicroscopic Study of the Lateral Line Organ of the Guppy,Poecilia reticulatusvar

1988 ◽  
Vol 105 (sup447) ◽  
pp. 9-13
Author(s):  
Takashi Kanda ◽  
Toshio Yoshihara ◽  
Toshio Kaneko ◽  
Yuji Yaku ◽  
Osamu Hojiro ◽  
...  
Keyword(s):  
Lateral Line ◽  
Electronmicroscopic Study ◽  
Lateral Line Organ ◽  
Line Organ
Sign in / Sign up

Export Citation Format

Share Document