論文 - 詳細
| RRC ID | 85057 |
|---|---|
| 著者 | Nishimura T, Tokuda IT, Miyachi S, Dunn JC, Herbst CT, Ishimura K, Kaneko A, Kinoshita Y, Koda H, Saers JPP, Imai H, Matsuda T, Larsen ON, Jürgens U, Hirabayashi H, Kojima S, Fitch WT. |
| タイトル | Evolutionary loss of complexity in human vocal anatomy as an adaptation for speech. |
| ジャーナル | Science |
| Abstract |
Human speech production obeys the same acoustic principles as vocal production in other animals but has distinctive features: A stable vocal source is filtered by rapidly changing formant frequencies. To understand speech evolution, we examined a wide range of primates, combining observations of phonation with mathematical modeling. We found that source stability relies upon simplifications in laryngeal anatomy, specifically the loss of air sacs and vocal membranes. We conclude that the evolutionary loss of vocal membranes allows human speech to mostly avoid the spontaneous nonlinear phenomena and acoustic chaos common in other primate vocalizations. This loss allows our larynx to produce stable, harmonic-rich phonation, ideally highlighting formant changes that convey most phonetic information. Paradoxically, the increased complexity of human spoken language thus followed simplification of our laryngeal anatomy. |
| 巻・号 | 377(6607) |
| ページ | 760-763 |
| 公開日 | 2022-8-12 |
| DOI | 10.1126/science.abm1574 |
| PMID | 35951711 |
| MeSH | Animals Biological Evolution* Humans Larynx* / anatomy & histology Phonation* Phonetics Primates* Speech* Speech Acoustics Vocal Cords* / anatomy & histology |
| IF | 41.846 |
| オルトメトリクス指標 |
オルトメトリクス指標項目
|
| 最多言及媒体 | X(Twitter) |
| 各媒体での言及数の合計 | 550 |
| 過去6か月間でのオルトメトリクス指標の変動値 | 25.0 |
| リソース情報 | |
| GAIN | |