Vocalization elicited by activation of A delta- and C-fibres in the rat.
Complex vocal responses in both the audible and ultrasonic frequency ranges were elicited by a single 2 ms electrical pulse applied to the tail. The first two cries exhibited consistent latencies and durations, were intensity-dependent and were triggered by peripheral fibres with conduction velocities of 7.3 +/- 0.8 and 0.7 +/- 0.1 ms-1, respectively. These behavioural responses are reminiscent of first and second pain triggered by A delta- and C-peripheral fibres in humans. They were followed by irregular audible cries with a fundamental frequency of 1.5 kHz and '22 kHz ultrasonic calls'.
Ardid
D
D
Groupe de Recherche sur le Langage, Hôpital Pitié Salpêtrière, Paris, France.
Jourdan
D
D
Eschalier
A
A
Arabia
C
C
Lé Bars
D
D
D000818:Animals; D004597:Electroshock; D008297:Male; D009020:Morphine / Q000494:pharmacology / Q000627:therapeutic use; D009412:Nerve Fibers / Q000502:physiology*; D009413:Nerve Fibers, Myelinated / Q000502:physiology*; D009431:Neural Conduction; D010146:Pain / Q000188:drug therapy / Q000503:physiopathology*; D051381:Rats; D017207:Rats, Sprague-Dawley; D011930:Reaction Time; D013623:Tail; D014828:Vocalization, Animal / Q000187:drug effects / Q000502:physiology*
D009020:Morphine