大运动量训练削弱了大脑前注意自动加工：来自MMN的证据

High-load Training Impairs Pre-attentive Change Detection: Evidence from MMN

DOI：

英文关键词:high-load training brain function MMN (mismatch negativity) change detection

基金项目:上海市科委课题(12231203000)

Author Name	Affiliation
AN Yan	Shanghai Research of Institute of Sport Science
LU Qing	Shanghai Science and Technology Management School
ZHENG Fanhui	Shanghai Research of Institute of Sport Science
WANG Chen	Shanghai Research of Institute of Sport Science
ZHAO Defeng	Shanghai Research of Institute of Sport Science

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中文摘要:

前注意是注意加工过程的早期阶段，是在注意之前对事物进行该不该注意分析的心理过程，它反映了大脑皮质对外界信息的自动加工能力，是选择性注意的开始或准备阶段。失匹配负波（MMN）是反映大脑前注意加工的ERP成分。本文以MMN为测试指标，考察了大运动量训练是否对运动员的前注意加工造成影响，为评价运动员的机能状态提供新指标，进而为帮助教练员合理地安排运动负荷提供科学依据。本文以13名上海青年男子排球运动员为研究对象，采用组内设计，记录和分析了运动员大运动量训练前后由不同声音频率引发的MMN波形。研究结果显示：大运动量训练后运动员MMN波幅显著降低。本研究结果表明，大运动量训练削弱了运动员的大脑前注意自动加工能力，MMN可以较敏感地反映运动员在训练期的大脑机能状况。

英文摘要:

MMN (mismatch negativity) of event-related potentials (ERPs) is an objective indicator of reflecting pre-attentive change detection. With MMN as the indicator, the research explores the characteristics of athlete’s pre-attentive change detection of auditory information after high-load training. The result shows that MMN amplitude is significantly reduced after high-load training. The conclusion is that high-load training impairs athlete’s ability of pre-attentive change detection. MMN can sensitively reflect the brain function of athlete during the period of training.

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