Sensory Function in Animals

Stebbins, William C.; Brown, C. H.; Petersen, Michael R.

doi:10.1002/cphy.cp010304

Cited by 4 publications

(3 citation statements)

References 38 publications

(16 reference statements)

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“…increased aggressiveness; Stebbins et al, 1984). The latter was of special importance as the subjects were neither laboratory animals nor completely wild and were required to remain affable after completion of the auditory experiments.…”

Section: Methodsmentioning

confidence: 99%

A behavioral audiogram of the red fox (Vulpes vulpes)

2015

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Section: Methodsmentioning

confidence: 99%

A behavioral audiogram of the red fox (Vulpes vulpes)

2015

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“…This phenomenon, called "desensitization," has been typically studied in some ligand-activated channels and it is well known that, after withdrawal of the agonist, recovery to the resting conditions is slow (see Hille, 1984). Although desensitization is a term applicable to ligandreceptor interactions, it is a phenomenon that could play a part in the physiological adaptation observed in some sensory receptors (Stebbens, Brown, and Peterson, 1984).…”

Section: Current-voltage Relation and Voltage Dependence The Voltage-dependent Activationmentioning

confidence: 99%

Potassium channel types in arterial chemoreceptor cells and their selective modulation by oxygen.

Ganfornina

López‐Barneo

1992

The Journal of General Physiology

111

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Single K + channel currents were recorded in excised membrane patches from dispersed chemoreceptor cells of the rabbit carotid body under conditions that abolish current flow through Na + and Ca 2+ channels. We have found three classes of voltage-gated K + channels that differ in their single-channel conductance (~/), dependence on internal Ca 2+ (Cai2+), and sensitivity to changes in 02 tension (Po2). Ca2+-activated K + channels (Kca channels) with ~/ ~ 210 pS in symmetrical K + solutions were observed when [Ca2+]i was > 0.1 IzM. Small conductance channels with ~/= 16 pS were not affected by [Ca2+]i and they exhibited slow activation and inactivation time courses. In these two channel types open probability (Pop,n) was unaffected when exposed to normoxic (Po2 = 140 mmHg) or hypoxic (P02 -5-10 mmHg) external solutions. A third channel type (referred to as Ko 2 channel), having an intermediate ,/( ~ 40 pS), was the most frequently recorded. Ko~ channels are steeply voltage dependent and not affected by [Ca2+]i, they inactivate almost completely in < 500 ms, and their Pope, reversibly decreases upon exposure to low P02. The effect of low Po2 is voltage dependent, being more pronounced at moderately depolarized voltages. At 0 mV, for example, Popen diminishes to ~ 40% of the control value. The time course of ensemble current averages of Ko 2 channels is remarkably similar to that of the O2-sensitive K + current. In addition, ensemble average and macroscopic K + currents are affected similarly by low P02. These observations strongly suggest that Ko 2 channels are the main contributors to the macroscopic K + current of glomus cells. The reversible inhibition of Ko 2 channel activity by low P02 does not desensitize and is not related to the presence of F-, ATP, and GTP--¢-S at the internal face of the membrane. These results indicate that Ko 2 channels confer upon glomus cells their unique chemoreceptor properties and that the O2-K + channel interaction occurs either directly or through an O2 sensor intrinsic to the plasma membrane closely associated with the channel molecule.

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“…During generalization testing, the consequences of any response to the core stimuli were the same as during discrimination training, but responses to any of the generalization stimuli produced a 5-s time-out. By treating responses to the generalization stimuli in this way, the problem of differentially biasing the subject's responses to specific stimuli was avoided (Blough & Blough, 1977;Stebbins et al, 1984).…”

Section: Call Discrimination Trainingmentioning

confidence: 99%

Neural lateralization of vocalizations by Japanese macaques: Communicative significance is more important than acoustic structure.

Petersen¹,

Beecher²,

Zoloth³

et al. 1984

Behavioral Neuroscience

163

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The study was designed to determine whether the neural lateralization of vocal perception in Japanese macaques depends on the acoustic properties of the calls used or their communicative significance. Four monkeys--two Japanese macaques and two comparison macaques--were trained to discriminate among monaurally presented exemplars of two classes of vocalizations from the Japanese macaque's repertoire. Once the subjects mastered the discrimination, they performed at equivalent accuracy levels for 150 sessions. However, during this time the Japanese monkeys showed a right ear performance advantage, whereas the comparison monkeys showed no ear advantage. In order to assess whether the comparison and Japanese monkeys were attending to the same acoustic cue when performing the discrimination, a generalization test was conducted with 27 novel vocalizations. The individual monkeys' generalization gradients were highly similar and revealed that all subjects were in fact listening to the same feature of the calls. These findings, coupled with the fact that the calls were of biological significance to the Japanese monkeys alone, suggest that the laterality effect is related, in some fashion, to the communicative valence of the signals rather than their purely physical characteristics.

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Sensory Function in Animals

Cited by 4 publications

References 38 publications

A behavioral audiogram of the red fox (Vulpes vulpes)

A behavioral audiogram of the red fox (Vulpes vulpes)

Potassium channel types in arterial chemoreceptor cells and their selective modulation by oxygen.

Neural lateralization of vocalizations by Japanese macaques: Communicative significance is more important than acoustic structure.

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