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Neuroreport. 1993 Nov 18;5(2):105-8.

Vocalization elicited by activation of A delta- and C-fibres in the rat.

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Groupe de Recherche sur le Langage, Hôpital Pitié Salpêtrière, Paris, France.


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'.

[Indexed for MEDLINE]

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