Coelli Stefania, Sclocco Roberta, Barbieri Riccardo, Reni Gianluigi, Zucca Claudio, Bianchi Anna Maria
Annu Int Conf IEEE Eng Med Biol Soc. 2015 Aug;2015:1512-5. doi: 10.1109/EMBC.2015.7318658.
This paper investigates the relation between mental engagement level and sustained attention in 9 healthy adults performing a Conners' "not-X" continuous performance test (CPT), while their electroencephalographic (EEG) activity was simultaneously acquired. Spectral powers were estimated and extracted in the classical EEG frequency bands. The engagement index (β/α) was calculated employing four different cortical montages suggested by the literature. Results show the efficacy of the estimated measures in detecting changes in mental state and its correlation with subject reaction times throughout the test. Moreover, the influence of the recording sites was proved underling the role of frontal cortex in maintaining a constant sustained attention level.
本文对9名健康成年人在进行康纳斯“非X”连续作业测试（CPT）时的心理参与水平与持续注意力之间的关系进行了研究，同时同步采集他们的脑电图（EEG）活动。在经典的EEG频段中估计并提取了频谱功率。采用文献中提出的四种不同皮质导联计算参与指数（β/α）。结果表明，所估计的测量方法在检测心理状态变化及其与整个测试过程中受试者反应时间的相关性方面是有效的。此外，记录部位的影响得到了证实，这突出了额叶皮质在维持恒定持续注意力水平中的作用。
