scholarly journals Anterior lateral line nerve encoding to tones and play-back vocalisations in free-swimming oyster toadfish, Opsanus tau

2014 ◽  
Vol 217 (9) ◽  
pp. 1570-1579 ◽  
Author(s):  
C. A. Radford ◽  
A. F. Mensinger
Keyword(s):  
Lateral Line ◽  
Free Swimming ◽  
Lateral Line Nerve ◽  
Opsanus Tau ◽  
Oyster Toadfish

Effect of the Anesthetic Tricaine (MS-222) on Nerve Activity in the Anterior Lateral Line of the Oyster Toadfish, Opsanus tau

2004 ◽  
Vol 92 (2) ◽  
pp. 1034-1041 ◽  
Author(s):  
Lucy M. Palmer ◽  
Allen F. Mensinger
Keyword(s):  
Lateral Line ◽  
Neural Activity ◽  
Water Current ◽  
Lateral Line Nerve ◽  
Opsanus Tau ◽  
Spontaneous Neural Activity ◽  
Afferent Fibers ◽  
Primary Afferent Fibers ◽  
Oyster Toadfish ◽  
Evoked Activity

Inductive neural telemetry was used to record from microwire electrodes chronically implanted into the anterior lateral line nerve of the toadfish, Opsanus tau. Spontaneous neural activity and the response of lateral line fibers to water current were continually monitored from 17 primary afferent fibers before, during, and after the administration of the anesthetic tricaine (MS-222). Significant decrease in spontaneous and evoked activity and increase in interspike interval was noted when anesthetic concentrations were ≥0.010%. Neural activity returned to control levels within ∼90 min of anesthetic withdrawal. Decreasing the pH of the solution without the anesthetic caused transient heightened sensitivity, indicating that tricaine and not the concurrent drop in pH was responsible for the decrease in sensitivity during anesthesia. During a secondary challenge with the anesthetic 24 h after the first, fibers initially showed faster recovery however overall recovery kinetics were similar. Although high tricaine concentration was correlated with decreased neural sensitivity, the concentrations normally used to maintain anesthesia in the toadfish did not have significant effect on the evoked firing rate. Thus given sufficient time to recover from the induction of surgical anesthesia, it may be possible to maintain the animal under light anesthesia while minimizing the physiological effects of tricaine.

Neural Recordings From the Lateral Line in Free-Swimming Toadfish, Opsanus tau

2003 ◽  
Vol 205 (2) ◽  
pp. 216-218 ◽  
Author(s):  
L. M. Palmer ◽  
B. A. Giuffrida ◽  
A. F. Mensinger
Keyword(s):  
Lateral Line ◽  
Free Swimming ◽  
Neural Recordings ◽  
Opsanus Tau

The central connections of the anterior lateral line nerve ofGnathonemus petersii

1973 ◽  
Vol 151 (1) ◽  
pp. 67-84 ◽  
Author(s):  
L. Maler ◽  
H. J. Karten ◽  
M. V. L. Bennett
Keyword(s):  
Lateral Line ◽  
Lateral Line Nerve

scholarly journals CARBON DIOXIDE FROM THE NERVE CORD OF THE LOBSTER

1925 ◽  
Vol 7 (6) ◽  
pp. 671-677 ◽  
Author(s):  
G. H. Parker
Keyword(s):  
Carbon Dioxide ◽  
Lateral Line ◽  
Nerve Cord ◽  
Homarus Americanus ◽  
Lateral Line Nerve ◽  
Steady Decrease ◽  
Co2 Output ◽  
Living Preparation

1. The nerve cord of the lobster (Homarus americanus Milne-Edwards) is very delicate and can be used as a living preparation for only a few hours after its removal from the animal. 2. During the first hour or so after removal it discharges CO2 at a steadily decreasing rate beginning at about 0.20 mg. CO2 per gram of cord per minute and ending at about 0.07 mg. 3. This discharge exhibits a steady decrease in rate and is not divisible into a period of gush and a period of uniform outflow as with the lateral-line nerve of the dogfish. It terminates in a very few hours with the complete death of the cord. 4. Both handling and cutting the cord temporarily increase the rate of CO2 output. 5. The stimulated cord discharges CO2 at a rate about 26 per cent higher than that of the quiescent cord, an increase of about 1.6 times that of the increase observed in the lateral-line nerve of the dogfish under similar circumstances.

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