Recent studies in cognitive neuroscience have revealed that the human brain's ability to multitask is largely a myth. When individuals attempt to perform two tasks simultaneously, the brain rapidly switches attention between them rather than processing both at once. This switching incurs a cognitive cost, leading to reduced efficiency and increased errors, particularly in complex tasks. Furthermore, neuroimaging data suggest that the prefrontal cortex, which governs executive functions, becomes overloaded during such attempts. Interestingly, practice can improve performance on individual tasks, but it does not eliminate the fundamental limitation of serial processing. These findings have significant implications for workplace productivity, challenging the common belief that multitasking enhances output. Instead, research advocates for focused, sequential work to optimize cognitive performance.
❓ 文中提到的研究的主要结论是什么？
A. A) 通过练习，大脑能够高效地同时处理多项任务。
B. B) 多任务处理效率低下，因为大脑是依次处理任务的，会产生认知成本。
C. C) 前额叶皮层与多任务处理能力无关。
D. D) 通过鼓励多任务处理来提高工作场所的生产力。
✅ 正确答案
B) Multitasking is ineffective because the brain processes tasks sequentially, incurring cognitive costs.