まとめ
新生児は,甘い味の水に反応して,舌を正確に動かす. 彼らの反応は,成人における味覚を反映した,砂糖の濃度と種類に対する感受性を示す.
科学分野:
- 発達心理学の心理学について
- 赤ちゃんの感覚知覚
- 味覚神経科学とは
背景:
- 幼児の味覚に対する反応は,幼児の早期発達を理解する上で極めて重要です.
- 幼児が味覚刺激に反応して示す精密な運動制御に関する研究は限られている.
研究 の 目的:
- 新生児の繊細な舌の運動を,甘い溶液の濃度や種類によって異なるものに反応して調査する.
- 幼児の舌の動きが,大人の心理物理学的データと同様に,甘さと相関するかどうかを判断する.
主な方法:
- 1~3日目の乳児を対象とした観察研究.
- 乳児は,吸い込みで調味料を添えた水を飲ませました.
- 舌の動きを正確に測定し,振幅とパターンを分析しました.
主要な成果:
- 乳児は,味覚の性質に敏感な舌の動きを段階的に示した.
- 砂糖とグルコースの濃度が高いと,舌の動き幅が大きくなる.
- 砂糖は,グルコースと比較して低濃度で反応を誘発した.
結論:
- 新生児は,味覚によって誘発される複雑な舌の動きを示します.
- 幼児の舌の動きは,糖質の濃度とタイプに対する感受性を反映し,大人の甘さ認識と一致しています.
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