从童年到成年时代的流分离的神经特征
Elena Benocci1, Claude Alain2,3, Axelle Calcus4
1Center for Research in Cognitive Neuroscience (CRCN), Université Libre de Bruxelles (ULB), Brussels, Belgium. elena.benocci@ulb.be.
Scientific reports
|February 14, 2026
概括
听觉场景分析,对于在噪音中理解语音至关重要,通过童年和青春期逐渐成熟. 像对象相关消极性 (ORN) 和P400这样的神经标记物发展,改善了流分离和语音感知能力.
科学领域:
- 神经科学是一个神经科学.
- 听觉感知是一种听觉感知.
- 发展心理学 发展心理学
背景情况:
- 听觉场景分析使听众能够将目标声音与背景噪音分开.
- 流分离是听觉场景分析的一个关键组成部分,涉及将声音组织成不同的流.
- 与对象相关的消极性 (ORN) 和P400是流分离的神经特征.
研究的目的:
- 调查流分离的神经和行为方面的发展轨迹.
- 检查流分离发展和在杂环境中的语音感知之间的关系.
- 了解从童年到成年期的听觉场景分析的成熟.
主要方法:
- 在活动流分离任务期间,在8-23岁的参与者中记录了与事件相关的潜力 (对象相关的消极性/P400).
- 在噪音任务中评估语音识别的行为表现.
- 分析了神经相关物 (ORN/P400) 的成熟及其与行为结果的关系.
主要成果:
- 随着年龄的增长,人们在噪音中的流分离和语音感知方面都观察到行为改善.
- 随着发展,ORN振幅和P400延迟降低了.
- P400振幅是流分离性能的一个重要预测指标.
结论:
- 支持流分离的神经机制经历了长时间的成熟,延伸到成年期.
- 这种长时间的成熟是声学场景分析和在具有挑战性的声条件下语音感知能力的基础.
- 这些发现突出了复杂的听觉处理技能的扩展发展时间表.
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