Article: The deduction of the level of the human larynx from bony landmarks: Its relevance to the evolutionos speech

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Title	The deduction of the level of the human larynx from bony landmarks: Its relevance to the evolutionos speech
Authors	Ki, CL1
Keywords	Basicranial Anatomy Evolution Of Speech Level Of Larynx Styloid Process
Issue Date	1991
Citation	Human Evolution, 1991, v. 6 n. 3, p. 249-261 [How to Cite?] DOI: http://dx.doi.org/10.1007/BF02438148
Abstract	It has been claimed that the capacity for speech in hominids is related to the level of the larynx relative to its surrounding structures. Lower positioned larynges, such as those found in modern humans, have been said to be a prerequisite for articulate speech. In certain fossil hominids, the level of the larynx has been deduced from the angulation of the styloid process and the distance from the posterior nasal spine to the basion (the distance PB). The hypothesis that correlations exist between these bony features and the level of the larynx was tested in this study. The inclination of the styloid process and the level of the larynx were measured on human cadavers and on lateral x-ray cephalograms of the same cadavers. In addition, the distance PB and the level of the larynx were measured on lateral cephalograms of living adult humans. The inclination of the styloid process and the distance PB were also measured on a series of adult dry skulls. Pearson's correlation coefficients for the three sets of measurements were calculated. Only slight correlations between the inclination of the styloid process, the distance PB, and the level the larynx were found. The results of this study indicate that accurate prediction of the level of the larynx from the inclination of the styloid process and the distance PB is not possible. © 1991 Editrice Il Sedicesimo.
ISSN	0393-9375
DOI	http://dx.doi.org/10.1007/BF02438148

DC Field	Value
dc.contributor.author	Ki, CL
dc.date.accessioned	2012-11-26T09:09:21Z
dc.date.available	2012-11-26T09:09:21Z
dc.date.issued	1991
dc.description.abstract	It has been claimed that the capacity for speech in hominids is related to the level of the larynx relative to its surrounding structures. Lower positioned larynges, such as those found in modern humans, have been said to be a prerequisite for articulate speech. In certain fossil hominids, the level of the larynx has been deduced from the angulation of the styloid process and the distance from the posterior nasal spine to the basion (the distance PB). The hypothesis that correlations exist between these bony features and the level of the larynx was tested in this study. The inclination of the styloid process and the level of the larynx were measured on human cadavers and on lateral x-ray cephalograms of the same cadavers. In addition, the distance PB and the level of the larynx were measured on lateral cephalograms of living adult humans. The inclination of the styloid process and the distance PB were also measured on a series of adult dry skulls. Pearson's correlation coefficients for the three sets of measurements were calculated. Only slight correlations between the inclination of the styloid process, the distance PB, and the level the larynx were found. The results of this study indicate that accurate prediction of the level of the larynx from the inclination of the styloid process and the distance PB is not possible. © 1991 Editrice Il Sedicesimo.
dc.description.nature	Link_to_subscribed_fulltext
dc.identifier.citation	Human Evolution, 1991, v. 6 n. 3, p. 249-261 [How to Cite?] DOI: http://dx.doi.org/10.1007/BF02438148
dc.identifier.doi	http://dx.doi.org/10.1007/BF02438148
dc.identifier.epage	261
dc.identifier.issn	0393-9375
dc.identifier.issue	3
dc.identifier.scopus	eid_2-s2.0-51249177871
dc.identifier.spage	249
dc.identifier.uri	http://hdl.handle.net/10722/176326
dc.identifier.volume	6
dc.language	eng
dc.publisher.place	Netherlands
dc.relation.ispartof	Human Evolution
dc.subject	Basicranial Anatomy
dc.subject	Evolution Of Speech
dc.subject	Level Of Larynx
dc.subject	Styloid Process
dc.title	The deduction of the level of the human larynx from bony landmarks: Its relevance to the evolutionos speech
dc.type	Article

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The University of Hong Kong

Article: The deduction of the level of the human larynx from bony landmarks: Its relevance to the evolutionos speech

The HKU Scholars Hub has contact details for these author(s).