The impact of image degradation and temporal dynamics on sustained attention.
The impact of image degradation and temporal dynamics on sustained attention.
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DOI：
10.1167/jov.22.4.8
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发表时间：
2022-03-02
影响因子：
1.8
通讯作者：
Fortenbaugh FC
中科院分区：
文献类型：
--
作者：
Brau JM;Sugarman A;Rothlein D;DeGutis J;Esterman M;Fortenbaugh FC
许多持续注意力缺陷的临床人群也有视觉缺陷。因此，有必要了解视觉输入的质量和不同形式的图像退化是如何导致在持续注意任务中表现较差的，特别是那些具有动态和复杂视觉刺激的任务。这项研究调查了图像退化对渐进式连续表演任务(GradCPT)的影响，在该任务中，参与者必须区分逐渐褪色的城市和山区场景。36名视力正常的参与者完成了这项任务，任务包括六个分辨率和对比度级别的两个块。受试者要么完成一个逐渐褪色的版本，要么完成静态图像演示。结果表明，在这两种时间动态下，图像分辨率的降低都会影响性能，而只有在渐进的时间动态下，性能才会因为图像对比度的降低而受到影响。图像相似性分析表明，与像素亮度的局部变化相比，性能与观察者收集图像的全局空间布局(即GIST)的能力有更高的关联，特别是在渐变图像呈现的情况下。这项工作表明，逐渐褪色的注意范式对初级视觉功能的缺陷很敏感，可能会导致这些问题被误解为注意失败。
Many clinical populations that have sustained attention deficits also have visual deficits. Therefore, it is necessary to understand how the quality of visual input and different forms of image degradation can contribute to worse performance on sustained attention tasks, particularly those with dynamic and complex visual stimuli. This study investigated the impact of image degradation on an adapted version of the gradual-onset continuous performance task (gradCPT), where participants must discriminate between gradually fading city and mountain scenes. Thirty-six normal-vision participants completed the task, which featured two blocks of six resolution and contrast levels. Subjects either completed a version with gradually fading or static image presentations. The results show decreases in image resolution impair performance under both types of temporal dynamics, whereas performance is only impaired under gradual temporal dynamics for decreases in image contrast. Image similarity analyses showed that performance has a higher association with an observer's ability to gather an image's global spatial layout (i.e. gist) than local variations in pixel luminance, particularly under gradual image presentation. This work suggests that gradually fading attention paradigms are sensitive to deficits in primary visual function, potentially leading to these issues being misinterpreted as attentional failures.
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影响因子：
8.2
作者：
Fortenbaugh FC;DeGutis J;Germine L;Wilmer JB;Grosso M;Russo K;Esterman M
通讯作者：
Esterman M
影响因子：
11.3
作者：
Auerbach, Randy P.;Kim, Judy C.;Chango, Joanna M.;Spiro, Westley J.;Cha, Christine;Gold, Joseph;Esterman, Michael;Nock, Matthew K.
通讯作者：
Nock, Matthew K.
影响因子：
4.7
作者：
Fam, Johnson;Rush, A. John;Luu, Chi
通讯作者：
Luu, Chi
影响因子：
3.8
作者：
Cassarino, Marica;Maisto, Marta;Setti, Annalisa
通讯作者：
Setti, Annalisa
影响因子：
5.7
作者：
Fortenbaugh FC;Rothlein D;McGlinchey R;DeGutis J;Esterman M
通讯作者：
Esterman M