title: Amplitude, latency, and habituation of the electrodermal response to acoustic stimuli in the frog.
abstract: The electrodermal response (EDR) of frogs to various acoustic stimuli was measured in the form of the skin potential response (SPR). There was no correlation between the polarity of the SPR and the intensity of the stimuli. When different frequencies were presented at the same intensity, the amplitude of the SPR to each was inversely proportional to the sound pressure at which that frequency just elicited an SPR. The amplitude of the sound-induced SPR increased monotonically with increasing sound pressure. The latency of the SPR decreased with increasing intensity of the acoustic stimulus. Acoustic stimuli repeated at intervals of 1 and 2 min elicited responses with progressively decreased amplitude and increased latency; with 4 min intervals there was little habituation. Fatigue participates to only a very slight extent in reducing the amplitude of the SPR and increasing its latency. The results are compared with the published data on frogs and mammals, including humans.
authors.affiliation: Zoologisches Institut der Universität, Poppelsdorfer Schloβ, D-5300 Bonn 1 Federal Republic of Germany.
authors.forename: J
authors.initials: J
authors.lastname: Brzoska