Compound action potential thresholds and tuning curves in the alligator lizard. 1986

R G Turner, and N T Shepard

Compound action potential (AP) thresholds and tuning curves were measured in the alligator lizard using techniques similar to those used with the mammal. For tone burst stimuli, the AP was a major component of the gross response, the electrical response to sound recorded by a wire electrode near the cochlea. The AP thresholds agreed well with threshold estimates based on single-fiber data. A forward masking paradigm produced AP tuning curves which resemble single-fiber tuning curves. A simultaneous masking paradigm produced curves which match the boundaries of single-fiber two-tone rate suppression. The AP thresholds and tuning curves provide useful information about the peripheral physiology of the ear of the alligator lizard.

UI MeSH Term Description Entries
D008116 Lizards Reptiles within the order Squamata that generally possess limbs, moveable EYELIDS, and EXTERNAL EAR openings, although there are some species which lack one or more of these structures. Chameleons,Geckos,Chameleon,Gecko,Lizard
D004553 Electric Conductivity The ability of a substrate to allow the passage of ELECTRONS. Electrical Conductivity,Conductivity, Electric,Conductivity, Electrical
D006309 Hearing The ability or act of sensing and transducing ACOUSTIC STIMULATION to the CENTRAL NERVOUS SYSTEM. It is also called audition. Audition
D000161 Acoustic Stimulation Use of sound to elicit a response in the nervous system. Auditory Stimulation,Stimulation, Acoustic,Stimulation, Auditory
D000200 Action Potentials Abrupt changes in the membrane potential that sweep along the CELL MEMBRANE of excitable cells in response to excitation stimuli. Spike Potentials,Nerve Impulses,Action Potential,Impulse, Nerve,Impulses, Nerve,Nerve Impulse,Potential, Action,Potential, Spike,Potentials, Action,Potentials, Spike,Spike Potential
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D001307 Auditory Perception The process whereby auditory stimuli are selected, organized, and interpreted by the organism. Auditory Processing,Perception, Auditory,Processing, Auditory

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