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Effects of Chewing Frequency on Cerebral Blood Flow and Cognitive Function

机译:咀嚼频率对脑血流和认知功能的影响

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The purpose of the present study was to examine the effect of the frequency of mastication on cerebral activation and task scores for computational tasks. Eleven healthy subjects participated in the present study (nine women, two men). Subjects carried out the Uchida-Kraepelin Test for 15 min before and after chewing tasteless gum for five minutes. The oxygenation of the left prefrontal cortex was monitored by near-infrared spectroscopy during the computational tasks. Task scores did not differ significantly according to chewing frequency (p > 0.05). Conversely, the oxygenation value measured after mastication at a chewing frequency of 110 times/minute (Hz) was significantly higher than that observed before mastication (p < 0.05). Meanwhile, before and after levels of oxygenation did not differ significantly for chewing frequencies of 30 Hz and 70 Hz (p > 0.05 for both). The results of the present study suggest that tasteless mastication does not enhance calculation performance, while a high mastication frequency demonstrates an influence on oxygenation. However, our study indicates that chewing tasteless gum per se does not increase cognitive performance.
机译:本研究的目的是检查咀嚼频率对计算任务的脑激活和任务分数的影响。 11个健康科目参加了本研究(九名女性,两名男子)。受试者在咀嚼无味胶之前和之后的uchida-kraepelin试验持续15分钟。在计算任务期间通过近红外光谱监测左前额定皮质的氧合。根据咀嚼频率(p> 0.05),任务评分没有显着差异。相反,在咀嚼频率为110次/分钟(Hz)的咀嚼频率下测量的氧合值显着高于咀嚼前观察到的氧合值(P <0.05)。同时,在氧化水平之前和之后没有显着差异,对于咀嚼30Hz和70Hz的咀嚼频率并没有显着差异(两种Hz的P> 0.05)。本研究的结果表明,无味的咀嚼不会增强计算性能,而高咀嚼频率表明对氧合的影响。然而,我们的研究表明,口臭本身不会增加认知性能。

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