✦ LIBER ✦

Evolution of structure and function of the hearing organ of lizards

✍ Scribed by Manley, Geoffrey A.

Publisher: John Wiley and Sons
Year: 2002
Tongue: English
Weight: 494 KB
Volume: 53
Category: Article
ISSN: 0022-3034
DOI: 10.1002/neu.10115

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

Following their origin during the early Cretaceous, the lizards radiated early into a number of families. This radiation was accompanied by a diversification in the structure of the inner ear. The morphology of the auditory basilar papilla is family‐specific, with large variations in a number of parameters. At the physiologic level, this wide variation does not result in an equivalent range of physiologic parameters. This review considers the possible influence of various morphologic features on function, and correlates these features with physiologic response parameters. Anatomical variety that does not result in significant changes in the inputs to the brain is “neutral” with regard to selection pressures. This independence apparently removed evolutionary constraints and led to some of the great variety of auditory papillae seen. Other anatomical features are more important and do produce significant effects at the level of the auditory nerve. © 2002 Wiley Periodicals, Inc. J Neurobiol 53: 202–211, 2002

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