Prefrontal activity during flavor difference test: Application of functional near-infrared spectroscopy to sensory evaluation studies
Prefrontal activity during flavor difference test: Application of functional near-infrared spectroscopy to sensory evaluation studies
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DOI：
10.1016/j.appet.2006.04.003
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发表时间：
2006-09-01
期刊：
影响因子：
5.4
通讯作者：
Dan, Ippeita
中科院分区：
文献类型：
--
作者：
Okamoto, Masako;Dan, Haruka;Dan, Ippeita
食物属性的感官评价涉及不同层次的认知功能，但对其神经基础的研究还不多。利用多通道功能近红外光谱（fNIRS）研究了12名健康志愿者在茶饮过程中外侧前额叶皮层（LPFC）前部的激活情况。所使用的实验任务对应于相同-不同测试的早期阶段，并要求受试者专心品尝茶叶样品并记住它们的味道。为了分离与任务中涉及的认知功能相关的激活，我们将结果与对照（Ctl）任务的结果进行了对比。在对照（Ctl）任务中，受试者将熟悉的茶样品含在嘴里，而不主动评估它们的味道。我们很可能将fNIRS数据注册到蒙特利尔神经学研究所的标准脑空间，以检查结果，因为它们与其他已发表的神经成像研究相对应。我们发现左侧LPFC和右侧额下回显著激活。这种激活模式与早期对其他感觉刺激编码的研究一致，认为皮层区域参与语义和知觉加工。本研究从神经影像学的角度对SE的认知过程进行了表征。(c) 2006 Elsevier Ltd.版权所有。
Sensory evaluation (SE) of food attributes involves various levels of cognitive functions, yet not much has been studied about its neural basis. Using multi-channel functional near-infrared spectroscopy (fNIRS), we examined the activation of the anterior portion of the lateral prefrontal cortex (LPFC) of 12 healthy volunteers during the SE of tea samples. The experimental task used corresponded to the early phase of the same-different test, and required subjects to attentively taste tea samples and memorize their flavors. To isolate activation associated with the cognitive functions involved in the task, we contrasted the results with those achieved by a control (Ctl) task during which subjects held familiar tea samples in their mouths without actively evaluating their flavor. We probabilistically registered the fNIRS data to the Montreal Neurological Institute standard brain space to examine the results as they correspond with other published neuroimaging studies. We found significant activation in the left LPFC and in the right inferior frontal gyrus. The activation pattern was consistent with earlier studies on encoding of other sensory stimuli, with cortical regions supposed to be involved in semantic and perceptual processing. This research makes a start on characterizing the cognitive process employed during SE from the neuroimaging perspective. (c) 2006 Elsevier Ltd. All rights reserved.