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首页> 外文期刊>Applied psychophysiology and biofeedback >EEG Topographic Mapping of Visual and Kinesthetic Imagery in Swimmers
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EEG Topographic Mapping of Visual and Kinesthetic Imagery in Swimmers

机译：游泳者视觉和动觉图像的脑电地形图

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摘要

This study investigated differences in QEEG measures between kinesthetic and visual imagery of a 100-m swim in 36 elite competitive swimmers. Background information and post-trial checks controlled for the modality of imagery, swimming skill level, preferred imagery style, intensity of image and task equality. Measures of EEG relative magnitude in theta, low (7-9 Hz) and high alpha (8-10 Hz), and low and high beta were taken from 19 scalp sites during baseline, visual, and kinesthetic imagery. QEEG magnitudes in the low alpha band during the visual and kinesthetic conditions were attenuated from baseline in low band alpha but no changes were seen in any other bands. Swimmers produced more low alpha EEG magnitude during visual versus kinesthetic imagery. This was interpreted as the swimmers having a greater efficiency at producing visual imagery. Participants who reported a strong intensity versus a weaker feeling of the image (kinesthetic) had less low alpha magnitude, i.e., there was use of more cortical resources, but not for the visual condition. These data suggest that low band (7-9 Hz) alpha distinguishes imagery modalities from baseline, visual imagery requires less cortical resources than kinesthetic imagery, and that intense feelings of swimming requires more brain activity than less intense feelings.
机译：这项研究调查了36名优秀游泳选手在100米游泳中的动觉和视觉图像在QEEG量度上的差异。通过背景信息和审后检查来控制图像的形式，游泳技能水平，偏好的图像样式，图像强度和任务平等。在基线，视觉和动觉图像中，从19个头皮部位进行了theta，低（7-9 Hz）和高alpha（8-10 Hz）以及低和高beta中脑电图相对幅度的测量。在视觉和动觉条件下，低阿尔法频段的QEEG幅度从低频段阿尔法的基线开始衰减，但在其他任何频段均未见变化。游泳者在视觉图像和动觉图像中产生的阿尔法脑电图幅值较低。这被解释为游泳者在产生视觉图像方面具有更高的效率。报告强度较高而图像感觉较弱（运动感觉）的参与者的α幅值较小，即使用了更多的皮质资源，但没有用于视觉条件。这些数据表明，低频段（7-9 Hz）alpha可以将图像形态与基线区分开，视觉图像比动觉图像所需的皮质资源更少，而且强烈的游泳感觉比不那么强烈的感觉需要更多的大脑活动。

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