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首页> 外文期刊>Neuropsychologia >EEG alpha synchronization is related to top-down processing in convergent and divergent thinking.
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EEG alpha synchronization is related to top-down processing in convergent and divergent thinking.

机译：脑电图alpha同步与收敛和发散思维中的自上而下的处理有关。

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Synchronization of EEG alpha activity has been referred to as being indicative of cortical idling, but according to more recent evidence it has also been associated with active internal processing and creative thinking. The main objective of this study was to investigate to what extent EEG alpha synchronization is related to internal processing demands and to specific cognitive process involved in creative thinking. To this end, EEG was measured during a convergent and a divergent thinking task (i.e., creativity-related task) which once were processed involving low and once involving high internal processing demands. High internal processing demands were established by masking the stimulus (after encoding) and thus preventing further bottom-up processing. Frontal alpha synchronization was observed during convergent and divergent thinking only under exclusive top-down control (high internal processing demands), but not when bottom-up processing was allowed (low internal processing demands). We conclude that frontal alpha synchronization is related to top-down control rather than to specific creativity-related cognitive processes. Frontal alpha synchronization, which has been observed in a variety of different creativity tasks, thus may not reflect a brain state that is specific for creative cognition but can probably be attributed to high internal processing demands which are typically involved in creative thinking.
机译：脑电图阿尔法活动的同步已被认为是皮层空转的指示，但根据最近的证据，它也与活跃的内部处理和创造性思维有关。这项研究的主要目的是调查脑电图alpha同步在多大程度上与内部加工需求以及与创造性思维有关的特定认知过程有关。为此，在一次融合和发散的思维任务（即与创造力相关的任务）中对脑电图进行了测量，该任务一次被处理得很少，而一次涉及到内部处理需求很高。通过掩盖刺激（在编码之后）建立了较高的内部处理要求，从而阻止了进一步的自下而上的处理。仅在排他的自上而下的控制（内部处理需求很高）下，才在收敛和发散思维中观察到额叶alpha同步，而在允许自下而上的处理（内部处理需求很低）时则没有观察到。我们得出结论，额叶阿尔法同步与自上而下的控制有关，而不是与特定的创造力相关的认知过程有关。在各种不同的创造力任务中都观察到的额叶阿尔法同步可能无法反映特定于创造力认知的大脑状态，但可能归因于创造性思维通常涉及的高内部处理需求。

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