Training eye movements for visual search in individuals with macular degeneration.
Training eye movements for visual search in individuals with macular degeneration.
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DOI：
10.1167/16.15.29
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发表时间：
2016-12-01
影响因子：
1.8
通讯作者：
Verghese P
中科院分区：
文献类型：
--
作者：
Janssen CP;Verghese P
我们报告了一种训练因黄斑变性而导致中心视野丧失的个体的方法，以提高视觉搜索的效率。我们的方法要求参与者对两个简单的轮廓做出相同/不同的判断。当他们用首选视网膜轨迹（PRL）固定屏幕中心时，在双眼暗点内的区域中呈现出一个轮廓；另一个轮廓在完整的视野内呈现出截然相反的效果。在 480 次试验（大约 6 小时）的过程中，我们逐渐减少了参与者扫视和判断刺激相似性的时间。这要求他们首先将 PRL 指向最初隐藏在暗点后面的刺激。九名参与者的结果表明，所有参与者都可以通过训练更快地完成任务，而不会牺牲相同/不同判断任务的准确性。尽管大多数参与者能够将他们的 PRL 导向最初隐藏的刺激，但参与者之间的能力有所不同。具体来说，九名参与者中有六人在训练中扫视速度更快。较小的一组（九个中的四个）在目标区域内或附近进行了准确的扫视，并在训练后 2 到 3 个月保留了这一策略。主观报告表明，培训提高了某些人对暗点位置的认识。然而，训练并没有转移到不同的视觉搜索任务。尽管如此，我们的研究表明，提高暗点意识并训练参与者看向暗点可能有助于他们获取缺失的信息。
We report a method to train individuals with central field loss due to macular degeneration to improve the efficiency of visual search. Our method requires participants to make a same/different judgment on two simple silhouettes. One silhouette is presented in an area that falls within the binocular scotoma while they are fixating the center of the screen with their preferred retinal locus (PRL); the other silhouette is presented diametrically opposite within the intact visual field. Over the course of 480 trials (approximately 6 hr), we gradually reduced the amount of time that participants have to make a saccade and judge the similarity of stimuli. This requires that they direct their PRL first toward the stimulus that is initially hidden behind the scotoma. Results from nine participants show that all participants could complete the task faster with training without sacrificing accuracy on the same/different judgment task. Although a majority of participants were able to direct their PRL toward the initially hidden stimulus, the ability to do so varied between participants. Specifically, six of nine participants made faster saccades with training. A smaller set (four of nine) made accurate saccades inside or close to the target area and retained this strategy 2 to 3 months after training. Subjective reports suggest that training increased awareness of the scotoma location for some individuals. However, training did not transfer to a different visual search task. Nevertheless, our study suggests that increasing scotoma awareness and training participants to look toward their scotoma may help them acquire missing information.
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影响因子：
9.2
作者：
Kwon, Mi Young;Nandy, Anirvan S.;Tjan, Bosco S.
通讯作者：
Tjan, Bosco S.
影响因子：
--
作者：
STEINMAN, RM
通讯作者：
STEINMAN, RM
影响因子：
1.8
作者：
Shanidze N;Fusco G;Potapchuk E;Heinen S;Verghese P
通讯作者：
Verghese P
DOI：
10.1037/0278-7393.6.2.174
发表时间：
1980-01-01
期刊：
JOURNAL OF EXPERIMENTAL PSYCHOLOGY-HUMAN LEARNING AND MEMORY
影响因子：
--
作者：
SNODGRASS, JG;VANDERWART, M
通讯作者：
VANDERWART, M
DOI：
10.1097/opx.0b013e318264cc77
发表时间：
2012-09-01
期刊：
Optometry and vision science : official publication of the American Academy of Optometry
影响因子：
--
作者：
Fletcher, Donald C;Schuchard, Ronald A;Renninger, Laura W
通讯作者：
Renninger, Laura W