Research Topics
| Geoffrey A ManleySummaryCountry: Germany Publications
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Detail Information
Publications
An evolutionary perspective on middle earsGeoffrey A Manley
Lehrstuhl für Zoologie, Technische Universitat Munchen, Hochfeldweg 2, 85350 Freising, Germany
Hear Res 263:3-8. 2010..This paper presents an historical perspective on these remarkably simple and yet highly effective structures...- Experiments in comparative hearing: Georg von Békésy and beyondGeoffrey A Manley
Cochlear and Auditory Brainstem Physiology, IBU, Faculty V, Carl von Ossietzky University Oldenburg, Carl von Ossietzky Strasse 9 11, 26129 Oldenburg, Germany
Hear Res 293:44-50. 2012..In lizards, the BM is not tuned and it is perhaps good that Békésy did not begin with those species and get discouraged in his seminal comparative work... 
What have lizard ears taught us about auditory physiology?Geoffrey A Manley
Lehrstuhl für Zoologie, Technische Universitat Munchen, Lichtenbergstrasse 4, 85747 Garching, Germany
Hear Res 238:3-11. 2008..Lizard ears provided the first in vivo evidence that the active process is calcium-sensitive and lies within the stereovillar bundles of the hair cells...- Spontaneous otoacoustic emissions from free-standing stereovillar bundles of ten species of lizard with small papillaeGeoffrey A Manley
Lehrstuhl für Zoologie, Technische Universitat Munchen, Lichtenbergstrasse 4, 85747 Garching, Germany
Hear Res 212:33-47. 2006..SOAE could be measured from all species, but some of their characteristics varied with papillar anatomy. Thus very small papillae produced fewer and smaller SOAE than larger papillae... - Lizard auditory papillae: an evolutionary kaleidoscopeGeoffrey A Manley
Lehrstuhl für Zoologie, Technische Universitat Munchen, Liesel Beckmann Str 4, Hochfeldweg 2, 85350 Freising Weihenstephan, Germany
Hear Res 273:59-64. 2011..Fundamental considerations of the tonotopic organisation of papillae leads to a likely scheme mapping the evolution of the hearing organs found in modern lizard families... - Exceptional high-frequency hearing and matched vocalizations in Australian pygopod geckosGeoffrey A Manley
Lehrstuhl für Zoologie, Technische Universitat Munchen, Liesel Beckmann Str 4, 85350 Freising, Germany
J Exp Biol 213:1876-85. 2010..These data also indicate that rather than having only strictly group-specific frequency ranges, amniote vertebrate hearing is strongly influenced by species-specific physical and ecological constraints... - Calcium modulates the frequency and amplitude of spontaneous otoacoustic emissions in the bobtail skinkGeoffrey A Manley
Lehrstuhl für Zoologie, Technische Universitat Munchen, Lichtenbergstrasse 4, 85747 Garching, Germany
J Neurophysiol 92:2685-93. 2004..The data also suggest that in this lizard species, the ionic calcium concentration in the cochlear endolymph is > or = 1 mM... - Spontaneous otoacoustic emissions in lizards: a comparison of the skink-like lizard families Cordylidae and GerrhosauridaeGeoffrey A Manley
Lehrstuhl für Zoologie, Technische Universitat Munchen, Freising, Germany
Hear Res 255:58-66. 2009.... - Spontaneous otoacoustic emissions in monitor lizardsGeoffrey A Manley
Lehrstuhl für Zoologie, Technische Universitat Munchen, Lichtenbergstrasse 4, 85747 Garching, Germany
Hear Res 189:41-57. 2004..Both of these features may be the result of the coupling of large numbers of hair cells via the continuous tectorial membrane... - Low density of membrane particles in auditory hair cells of lizards and birds suggests an absence of somatic motilityChristine Köppl
Lehrstuhl für Zoologie, Technische Universitat Munchen, 85747 Garching, Germany
J Comp Neurol 479:149-55. 2004..This suggests that nonmammalian hair cells do not possess high densities of motor protein in their membranes and are thus unlikely to be capable of somatic motility... - Evolution of structure and function of the hearing organ of lizardsGeoffrey A Manley
Lehrstuhl für Zoologie, Technische Universitat Munchen, Lichtenbergstrasse 4, 85747 Garching, Germany
J Neurobiol 53:202-11. 2002..Other anatomical features are more important and do produce significant effects at the level of the auditory nerve... 
The influence of injected AC and DC currents on spontaneous otoacoustic emissions in the bobtail lizardGeoffrey A Manley
Lehrstuhl für Zoologie, Technische Universitat Munchen, Garching, Germany
J Assoc Res Otolaryngol 3:200-8. 2002..The similarity is interesting in view of the putatively different cellular mechanisms driving the active process in mammals and non-mammals...- BAPTA induces frequency shifts in vivo of spontaneous otoacoustic emissions of the bobtail lizardGeoffrey A Manley
The Auditory Laboratory, Department of Physiology, University of Western Australia, Crawley, Australia
Audiol Neurootol 10:248-57. 2005..The direction and degree of frequency shifts were consistent with in vitro and in vivo data showing the effects of changing calcium concentrations in the endolymph directly... - Directionality of the lizard earJakob Christensen-Dalsgaard
Center for Sound Communication, SDU Odense University, Campusvej 55, DK 5230 Odense M, Denmark
J Exp Biol 208:1209-17. 2005..Therefore, the directionality is easily exploitable by simple binaural subtraction in the brain. Lizard ears are the clearest vertebrate examples of directionality generated by tympanic coupling... - Audiogram, body mass, and basilar papilla length: correlations in birds and predictions for extinct archosaursOtto Gleich
ENT Department, University of Regensburg, Franz Josef Strauss Allee 11, 93042 Regensburg, Germany
Naturwissenschaften 92:595-8. 2005....