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Article: The deduction of the level of the human larynx from bony landmarks: Its relevance to the evolutionos speech
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TitleThe deduction of the level of the human larynx from bony landmarks: Its relevance to the evolutionos speech
 
AuthorsKi, CL1
 
KeywordsBasicranial Anatomy
Evolution Of Speech
Level Of Larynx
Styloid Process
 
Issue Date1991
 
CitationHuman Evolution, 1991, v. 6 n. 3, p. 249-261 [How to Cite?]
DOI: http://dx.doi.org/10.1007/BF02438148
 
AbstractIt 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.
 
ISSN0393-9375
2013 SCImago Journal Rankings: 0.117
 
DOIhttp://dx.doi.org/10.1007/BF02438148
 
DC FieldValue
dc.contributor.authorKi, CL
 
dc.date.accessioned2012-11-26T09:09:21Z
 
dc.date.available2012-11-26T09:09:21Z
 
dc.date.issued1991
 
dc.description.abstractIt 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.naturelink_to_subscribed_fulltext
 
dc.identifier.citationHuman Evolution, 1991, v. 6 n. 3, p. 249-261 [How to Cite?]
DOI: http://dx.doi.org/10.1007/BF02438148
 
dc.identifier.doihttp://dx.doi.org/10.1007/BF02438148
 
dc.identifier.epage261
 
dc.identifier.issn0393-9375
2013 SCImago Journal Rankings: 0.117
 
dc.identifier.issue3
 
dc.identifier.scopuseid_2-s2.0-51249177871
 
dc.identifier.spage249
 
dc.identifier.urihttp://hdl.handle.net/10722/176326
 
dc.identifier.volume6
 
dc.languageeng
 
dc.publisher.placeNetherlands
 
dc.relation.ispartofHuman Evolution
 
dc.subjectBasicranial Anatomy
 
dc.subjectEvolution Of Speech
 
dc.subjectLevel Of Larynx
 
dc.subjectStyloid Process
 
dc.titleThe deduction of the level of the human larynx from bony landmarks: Its relevance to the evolutionos speech
 
dc.typeArticle
 
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<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&apos;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. &#169; 1991 Editrice Il Sedicesimo.</description.abstract>
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Author Affiliations
  1. The University of Hong Kong