睁眼和闭眼对工作记忆任务中生理条件的影响

2017 IEEE 17th International Conference on Bioinformatics and Bioengineering (BIBE) Pub Date : 2017-10-01 DOI:10.1109/BIBE.2017.00-60

K. Onishi, H. Hagiwara

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引用次数: 3

摘要

本研究的目的是探讨工作记忆任务中睁眼和闭眼对工作负荷生理指标的影响。我们使用NASA-TLX作为主观评价，并通过近红外光谱测量脑电图和氧合血红蛋白(oxyHb)浓度作为工作负荷的生理指标。受试者在完成n-back任务的同时进行alpha衰减测试(闭眼[30秒]，睁眼[30秒]× 3)，持续3分钟。增加任务负荷会增加加权工作量和氧血红蛋白。由于睁眼状态下的Fz / αPz与oxyHb呈现相同的趋势，我们可以确认睁眼状态下的Fz / αPz是负荷程度的一个指标。然而，在闭眼状态下，Fz / αPz在不同任务之间或不同时间变化不大。这些结果表明，Fz / αPz可以作为只在睁眼时才显示工作强度的指标。

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Effects of Open Versus Closed Eyes on Physiological Conditions During a Working Memory Task

The purpose of this study was to investigate the effect of open versus closed eyes during a working memory task on physiological indices of workload. We used the NASA-TLX as a subjective evaluation, and electroencephalograms and oxygenated hemoglobin (oxyHb) concentrations measured via near-infrared spectroscopy as physiological indices of workload. Subjects performed n-back tasks while simultaneously performing an alpha attenuation test (eyes closed [30 s], eyes open [30 s] x 3) for 3 min. Increasing the task load increased the weighted workload and oxyHb. Since Fz / αPz in the open-eyes state shows the same trend as oxyHb, we were able to confirm that Fz / αPz in the open-eyes state is an index of the degree of the workload. However, Fz / αPz varied little between tasks or over time in the closed-eyes state. These results suggest that Fz / αPz is suitable as an index for indicating the degree of a workload only when the eyes are open.

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2017 IEEE 17th International Conference on Bioinformatics and Bioengineering (BIBE)

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