High refresh rate and oculomotor adaptation facilitate reading from video displays
High refresh rate and oculomotor adaptation facilitate reading from video displays
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DOI：
10.1163/156856897x00230
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发表时间：
1997-01-01
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影响因子：
--
通讯作者：
Sykes, J
中科院分区：
文献类型：
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作者：
Montegut, MJ;Bridgeman, B;Sykes, J
在500赫兹和60赫兹的屏幕刷新率下测试了视频显示终端(VDT)的读数。在500赫兹时，最初的阅读速度是8字/分钟(3.05%)。一种假设，即VDT的阅读率受到刺激可获得性的限制，这是造成这种差异的原因。当眼睛到达一个新的注视位置时，它会停下来，直到中心凹出现一段文字样本。然后，处理以正常方式恢复。结合500赫兹的读数数据，可以预测在任何刷新速率下的读取率，并通过60赫兹的读取率进行了定量验证。由于两种刷新条件下眼球运动频率的不同，在文本的后半部分，阅读速度的差异消失了。从前半部分到后半部分，受试者以60赫兹的频率进行更多的大的前向眼跳和更少的小的反向眼跳。这两个更改使文本的采样更加稀疏，补偿了采样之间的停滞时间。受试者没有意识到刷新条件，他们阅读速度的差异，以及他们产生的眼动类型。从连续照明的有源矩阵显示器读取数据比从类似的VDT读取略快。
Reading from a video display terminal (VDT) was tested at screen refresh rates of 500 Hz and 60 Hz. Reading was initially 8 words/min (3.05%) faster at 500 Hz. A hypothesis that reading rate on VDTs is limited by stimulus availability accounts for the difference. When the eye reaches a new fixation position, it 'parks' until a sample of text appears at the fovea. Then processing resumes in the normal way. This idea, combined with the 500-Hz reading data, can predict reading rate at any refresh rate, and is quantitatively confirmed by the reading rate at 60 Hz. The difference in reading rates disappeared for the second half of the text, as a result of differences between frequencies of eye movements in the two refresh conditions. From the first half to the second, subjects at 60 Hz made more large forward saccades and fewer small reverse saccades. Both changes make sampling of the text more sparse, compensating for the dead time between samples. Subjects were unaware of refresh conditions, differences in their reading rates, and types of eye movements they generated. Reading from a continuously illuminated active-matrix display is slightly faster than from a comparable VDT.