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通过研究左前额叶在非相关词对的语义编码过程中的作用，探讨近红外光学成像技术用于脑高级认知活动检测的可行性。被试在两种实验条件下分别学习视觉呈现的20个汉字非相关词对，要求被试或将词对组成一个有意义的句子（深加工），或判断两个词是否具有相同的结构组合（浅加工）。光学成像器即时记录连续光透过额骨及前额皮层后760nm和850nm的漫射光强变化，以此推测相应脑组织的血容量变化。结果表明，与浅加工相比，左下前额叶在深加工时的血容量增多，尤其是背外侧部分。
By investigating the role of the left prefrontal cortex in the semantic coding of uncorrelated word pairs, we explore the feasibility of using near-infrared optical imaging in the detection of high-level cognitive brain activity. Under the two experimental conditions, the subjects were asked to learn 20 non-related pairs of visual words respectively, asking them to form a meaningful sentence (deep processing), or to determine whether the two words had the same structural combination Shallow processing). The optical imager instantly recorded the continuous light changes through the frontal cortex and the frontal cortex at 760nm and 850nm diffuse light intensity, suggesting that changes in blood volume corresponding brain tissue. The results showed that, compared with the shallow processing, the lower left prefrontal lobe during deep processing of blood volume increased, especially in the dorsolateral part.