High-Frequency Binaural Beats Increase Cognitive Flexibility: Evidence from Dual-Task Crosstalk.
High-Frequency Binaural Beats Increase Cognitive Flexibility: Evidence from Dual-Task Crosstalk.
复制标题
DOI：
10.3389/fpsyg.2016.01287
复制
发表时间：
2016
影响因子：
3.8
通讯作者：
Colzato LS
中科院分区：
文献类型：
--
作者：
Hommel B;Sellaro R;Fischer R;Borg S;Colzato LS
越来越多的证据表明，认知控制过程可以被配置为优化信息处理的持久性（通过放大决策选择之间的竞争和这种竞争的自上而下的偏见）或灵活性（通过抑制竞争和偏见）。我们调查了高频双耳节拍，一种被怀疑作为认知增强剂的听觉错觉，是否对认知控制配置产生影响。我们假设，在伽马范围内的双耳节拍偏向认知控制风格的灵活性，这反过来又会增加任务之间的串扰在双任务范例。我们复制了早期的研究结果，即在第一次执行的任务的反应时间是敏感的第一和第二个任务的反应之间的兼容性串扰的指示。正如所预测的那样，与参与者暴露于340 Hz连续音调的控制条件相比，将参与者暴露于伽马范围内的双耳节拍增加了这种效果。这些研究结果提供了一致的证据表明，认知控制风格可以通过诱导特定的内部状态而系统地产生偏差;高频双耳节拍使控制风格偏向于更灵活;不同的风格通过改变局部竞争和自上而下的偏见的强度来实现。
Increasing evidence suggests that cognitive-control processes can be configured to optimize either persistence of information processing (by amplifying competition between decision-making alternatives and top-down biasing of this competition) or flexibility (by dampening competition and biasing). We investigated whether high-frequency binaural beats, an auditory illusion suspected to act as a cognitive enhancer, have an impact on cognitive-control configuration. We hypothesized that binaural beats in the gamma range bias the cognitive-control style toward flexibility, which in turn should increase the crosstalk between tasks in a dual-task paradigm. We replicated earlier findings that the reaction time in the first-performed task is sensitive to the compatibility between the responses in the first and the second task—an indication of crosstalk. As predicted, exposing participants to binaural beats in the gamma range increased this effect as compared to a control condition in which participants were exposed to a continuous tone of 340 Hz. These findings provide converging evidence that the cognitive-control style can be systematically biased by inducing particular internal states; that high-frequency binaural beats bias the control style toward more flexibility; and that different styles are implemented by changing the strength of local competition and top-down bias.