Air Force Research Laboratory, Wright-Patterson AFB.
Cubic Defense, Beavercreek.
Top Cogn Sci. 2024 Jan;16(1):113-128. doi: 10.1111/tops.12700. Epub 2023 Oct 6.
Performance on the psychomotor vigilance test (PVT; Dinges & Powell, 1985)-a common index of sustained attention-is affected by the opposing forces of fatigue and sustained effort, where reaction times and error rates typically increase across trials and are sometimes offset by additional efforts deployed toward the end of the task (i.e., an "end-spurt"; cf. Bergum & Klein, 1961). In ACT-R (Adaptive Control of Thought-Rational; Anderson et al., 2004), these influences on task performance have been modeled as latent variables that are inferred from performance (e.g., Jongman, 1998; Veksler & Gunzelmann, 2018) without connections to directly observable variables. We propose the use of frontal gamma (γ) spectral power as a direct measure of vigilant effort and demonstrate its efficacy in modeling performance on the PVT in both the aggregate and in individuals.
心理运动警觉测试（PVT；Dinges 和 Powell，1985）的表现-持续注意力的常用指标-受到疲劳和持续努力的相反力量的影响，其中反应时间和错误率通常在试验中增加，有时通过在任务结束时部署额外的努力来抵消（即，“冲刺”；参见 Bergum 和 Klein，1961）。在 ACT-R（思维理性的自适应控制；Anderson 等人，2004）中，这些对任务表现的影响被建模为从表现推断出来的潜在变量（例如，Jongman，1998；Veksler 和 Gunzelmann，2018），而与直接观察到的变量没有联系。我们建议使用额叶伽马（γ）光谱功率作为警觉努力的直接测量指标，并证明其在对 PVT 的整体和个体表现进行建模方面的有效性。
