1991 Fiscal Year Final Research Report Summary
The technical development of the primate glottal activities including fossil hominid.
| Project/Area Number |
63840026
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| Research Category |
Grant-in-Aid for Developmental Scientific Research
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| Allocation Type | Single-year Grants |
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| Research Field |
Anthropology
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| Research Institution | Kansai Medical University |
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Principal Investigator |
HAYAMA Sugio Kansai Med. Univ. ・as Prof., 医学部, 助教授 (70025360)
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| Co-Investigator(Kenkyū-buntansha) |
KOJIMA Shozo Kyoto Univ. Primate Res. Inst. ・Prof., 霊長類研究所, 教授 (70027499)
NIIMI Seiji Tokyo Univ. Fac. Med. ・Prof., 医学部, 教授 (00010273)
SAKURA Hajime Sapporo-Gakuin Univ. ・Prof, 人文学部, 教授 (40013908)
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| Project Period (FY) |
1988 – 1990
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| Keywords | Human glottal tone origin / Paleocene primate / Arboreal locomotor adaptation / Air-trapping / Synergism / 息こらえ(airーtropping) / 相乗効果 / 化石人類音道復元 |
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| Research Abstract |
The origin of hominids' glottal tone goes back to 65 million years ago. At that time, treeshrews and early primates, which had' acquired locomotive adaptation of the arboreal three-dimensional space in early Tertiary, made their functions-morphological adaptation from smell-brain to sight-brain. Pararell to this the laryngeal cavity of treeshrews and early primates also acquired functional adaptation such as locomotive 'organ. The laryngeal sac and specialized saccule of treeshews and primates is thought to be higher than the locomotion adaptive structure of treeshrew, prosimian, monkey or age 'of arboreal life. In other words, , the glottis and forelimbs of primates including prosimian have presumably finished anagenesis toward the-formation of humans-' glottal tone, while the synergism of their respective functions was evolving mainly on the air-trapping. Human glottal tone forming for articulate speech is a function aquired together with the locomotive adaptation of the arboreal life in early Tertiary. The persistent maintenance itself of this functionomorphologically adapted laryngeal cavity without its specialization but as generalized character is thought to lead to the human gl, ottal tone forming function.
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