[Motivation effect on power changes in the brain biopotentials in the figurative and verbal creativity tasks].

O M Razumnikova, N V Vol'f, I V Tarasova
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Abstract

Effect of extrinsic motivation stimulating the most original problem solving during verbal and figurative divergent thinking was studied by EEG mapping. The righthanded university students (27 males and 26 females) participated in the experiments. An instruction "to create the most original solution" as compared to condition with an instruction "to create any solution" induced an increase in the baseline power of the alpha 1 and alpha 2 rhythms most pronounced in the posterior cortex. Task-related desynchronization of the alpha rhythms was higher but the beta-2 synchronization was lower after the former than after the latter instruction. Differences in the asymmetry of the alpha 1 and alpha 2 rhythms in the parietal and temporal regions of hemispheres suggested the right hemisphere dominance in intrinsic alertness and evoked activation related to divergent thinking. The findings were common and gender-independent in both figurative and verbal tasks suggesting a generalized influence of extrinsic motivation on creative activity.

动机对比喻和言语创造任务中脑生物电位变化的影响。
通过脑电作图研究了外在动机对言语和比喻性发散思维中最原始问题解决的刺激作用。实验对象为惯用右手的大学生,男27名,女26名。“创造最原始的解决方案”的指令与“创造任何解决方案”的指令相比,诱导了阿尔法1和阿尔法2节奏的基线功率的增加,这在后皮层最为明显。与任务相关的α节律去同步性较高,而β -2节律同步性较低。大脑顶叶和颞叶区域α 1和α 2节律的不对称性差异表明右半球在内在警觉性和与发散性思维相关的诱发激活方面占主导地位。这些发现在比喻和言语任务中都是普遍的,并且与性别无关,这表明外在动机对创造性活动有普遍的影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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