Cortical Activation Accompanying Mastication, Swallowing, and Motor Imagery : Spectral Analysis of Electroencephalogram

采用脑电频谱分析技术研究了咀嚼、吞咽时的皮层活动，以及咀嚼和吞咽的运动想象。使用19通道EEG系统（SYNAFIT 2500，NEC Co）记录EEG。咀嚼时大脑皮层的激活：从脑电地形图的角度看，咀嚼引起的大脑激活可以表现为放松的清醒状态，伴随着一定强度的心理活动，食物的摄入也可能与心理活动强度有关，为咀嚼动作做准备.咀嚼持续时间相关的皮层激活：咀嚼持续时间对脑激活的影响主要表现在脑电地形图上，如θ波和/或δ波的出现.咀嚼过程中伴随食物硬度的皮层激活：食物质地（如硬度）可影响皮层激活，其表现为咀嚼过程中的外观、视觉、听觉、 ...更多信息 α波和β波的范围以及θ波和/或δ波的消失。咀嚼表象伴随的大脑皮层激活：根据脑电频谱，咀嚼表象所显示的大脑激活可以被描述为典型的放松清醒状态，而额叶皮层区域没有强烈的心理活动.伴随吞咽的皮层激活：比较吞咽前后EEG的频谱波因子，吞咽后相的β 1、β 2和δ波显著增加。因此，据推测，吞咽引起的皮层激活可以被描述为基于EEG频谱的地形方面的强烈的精神活动。伴随吞咽想象的皮层激活：根据EEG频谱的地形方面，根据吞咽想象的大脑激活可以被描述为典型的放松的清醒状态，而没有强烈的精神活动。咀嚼运动对颞下颌关节紊乱病患者皮层激活的影响：颞下颌关节紊乱病患者缺乏正常人额区α、β波因子增加和θ波因子减少所表现的皮层激活。这可能与咀嚼运动行为的改变有关。从以上结果可以得出结论，根据咀嚼、吞咽以及咀嚼和吞咽的运动想象方面，脑电谱可以指示出特殊的地形学发现，并且可以指示出颞下颌关节疾病中脑电谱的进一步改变。少

The cortical activity was investigated using spectral analysis of electroencephalogram (EEG) to clarify the cortical activation accompanying mastication, swallowing, and motor imagery of mastication and swallowing. The EEG was recorded using a 19-channel EEG system (SYNAFIT 2500, NEC Co).1. Cortical activation accompanying mastication : brain activation by mastication could be expressed as the relaxed wakefulness with some intense mental activity from the topographical aspects of EEG spectrum, also food intake could be related to the mental intense for the preparation of masticatory performance.2. Cortical activation accompanying masticatory duration : brain activation could be affected by the duration of mastication based on the topographical aspects of EEG spectra, such as the appearance of theta and/or delta waves.3. Cortical activation accompanying food hardness on mastication : cortical activation could be affected by food textures such as hardness, which is expressed by the appea … More rances of alpha and beta waves and disappearance of theta and/or delta wave.4. Cortical activation accompanying masticatory imagery : brain activation shown by masticatory imagery could be described as typical relaxed wakefulness without intense mental activity in the frontal cortex area based on EEG spectra.5. Cortical activation accompanying swallowing : in comparing spectral wave factors of EEG between pre- and post- swallowing, the beta 1, the beta 2, and delta waves were significantly increased in the post-swallowing phase. Therefore, it is assumed that cortical activation by swallowing could be described as intense mental activity based on the topographical aspects of EEG spectra.6. Cortical activation accompanying swallowing imagery : brain activation in accordance with swallowing imagery could be described as typical of relaxed wakefulness without intense mental activity based on the topographical aspects of EEG spectra.7. The effect of mastication to cortical activation in TMDs : TMDs lack the cortical activation shown by the increases in alpha and beta wave factors and decrease in theta wave factor which presented in the frontal area of normal subjects. This may be related to modification of masticatory motor behaviors.From the above results, it is concluded that EEG spectra could be indicated peculiar topographical findings according to the aspects of mastication, swallowing and motor imagery of mastication and swallowing, and further modification of EEG spectra could be indicated in TMDs. Less