Département de Psychologie, Université du Québec à Trois Rivières, Trois Rivières, QC G9A 5H7, Canada.
J Clin Exp Neuropsychol. 2013;35(6):596-607. doi: 10.1080/13803395.2013.800023. Epub 2013 May 24.
This study extracted the error-related negativity (ERN) waveform component recorded from a visual-spatial attention and a visual short-term memory task to assess rigorously the long-term and cumulative effects of concussions on evaluative processes of cognitive control related to performance monitoring. This study demonstrates that, relative to control athletes, multiply concussed athletes show significant ERN amplitude reduction elicited by error generation. These cumulative effects of concussions on ERN amplitude were found in two distinct experimental paradigms designed to solicit concussion-sensitive cognitive abilities such as attention and short-term memory. This suggests that the mechanisms that contribute to the evaluation of cognitive performance may be significantly affected following multiple concussions even in low-conflict situations.
本研究提取了视觉空间注意和视觉短期记忆任务中记录的错误相关负向波（ERN）波形成分，以严格评估脑震荡对与表现监测相关的认知控制的评价过程的长期和累积影响。本研究表明，与对照组运动员相比，多次脑震荡运动员在产生错误时诱发的 ERN 振幅明显降低。在两个不同的实验范式中发现了脑震荡对 ERN 振幅的累积效应，这些范式旨在测试注意力和短期记忆等对脑震荡敏感的认知能力。这表明，即使在低冲突情况下，多次脑震荡后，可能会对评估认知表现的机制产生重大影响。
