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

事件相关电位(event-related potentials,ERP)的成分失匹配负波(mismatch negativity,MMN)是反映前注意加工的客观指标。以MMN为指标,探讨了大运动量训练后运动员听觉信息自动加工的特点。结果发现,大运动量训练引起MMN波幅的显著降低。结论: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。

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.