另类大脑和婴儿声学学习的演变
Renata B Biazzi1, Daniel Y Takahashi2, Asif A Ghazanfar1,3
1Department of Psychology, Princeton University, Princeton, NJ 08544.
概括
人类和大猩猩的婴儿通过社交互动来发展声学,与猿人不同. 这与它们在出生时的其他 (发育缓慢) 大脑和合作繁殖环境有关,促进了类似语音的声音发育.
科学领域:
- 进化生物学 进化生物学
- 灵长类动物学 灵长类动物学
- 发育神经科学的发展神经科学.
背景情况:
- 人类婴儿的声音发育依赖于照顾者的反,与猿和子不同.
- 然而,大黄却表现出社会引导的声学学习,这构成了进化难题.
研究的目的:
- 为了研究使人类和小熊猫能够进行社会引导的声学学习的进化因素.
- 测试一个假设,神经外生出生和合作繁殖促进声学学习.
主要方法:
- 在灵长类动物物种中,对出生时大脑生长率的比较分析.
- 模拟大脑发育时间和社会刺激对声乐学习的影响.
- 检查其他性,合作育种和声乐学习里程碑之间的相关性.
主要成果:
- 与黑猩猩和 rhesus macaques 相比,人类和大黄蜂的大脑在出生时表现出更快的增长 (神经其他) .
- 这一额外的大脑发育期与关键的声乐学习阶段重叠.
- 一个正式的模型支持的假设是,其他性和合作繁殖增强声乐学习.
结论:
- 人类和海豚的社会导向声学学习的进化是由它们的其他社会大脑促进的.
- 合作繁殖环境通过在关键的发育窗口提供丰富的社会刺激来进一步支持声乐学习.
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