Are the benefits of sentence context different in central and peripheral vision?
Are the benefits of sentence context different in central and peripheral vision?
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DOI：
10.1097/00006324-199911000-00025
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发表时间：
1999-11
期刊：
影响因子：
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通讯作者：
E. M. Fine;C. Hazel;K. L. Petre;G. Rubin
中科院分区：
文献类型：
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作者：
E. M. Fine;C. Hazel;K. L. Petre;G. Rubin
背景与阅读无关单词相比，句子上下文提高了阅读速度。以往对正常外周视网膜和中心性视野丧失(CFL)患者的研究得出了不同的结论，即句子语境对外周视网膜阅读的好处。对正常周边视力的研究将文本呈现给下视野；据推测，大多数患者使用的是其暗点侧方的视网膜。目前这项研究的目的是确定文本在视网膜上的位置是否与句子上下文的有用性相互作用。方法正常视力受试者阅读位于中心凹、视场空间左侧和下方各50个位置的句子和随机单词。使用快速连续视觉呈现(RSVP)呈现文本。结果句子与随机词的阅读比率(语境增益)在下视野(2.7+/-0.20)和中心凹(2.6+/-0.26)相同，而在左视野(7.2+/-1.22)语境增益较大。结论无论文本在视网膜上的位置如何，句子上下文都能提高阅读速度。外周视网膜的阅读速度不会因为不能使用句子上下文而降低。
BACKGROUND Sentence context increases reading speed relative to reading unrelated words. Previous studies of normal peripheral retina and in patients with central field loss (CFL) have come to different conclusions regarding the benefits of sentence context for reading in peripheral retina. Studies of normal peripheral vision presented the text to inferior visual field; it is presumed that most of the patients fixated using retina lateral to their scotoma. The goal of the current study was to determine whether the location of the text on the retina interacts with the usefulness of sentence context. METHODS Normally sighted subjects read sentences and random lists of words presented at the fovea and at 50 to the left of and 50 inferior to fixation in visual field space. Texts were presented using rapid serial visual presentation (RSVP). RESULTS The ratio of reading rates for sentences to random words (context gain) was the same in the inferior field (2.7 +/- 0.20) and at the fovea (2.6 +/- 0.26); context gain was greater in the left field (7.2 +/- 1.22). CONCLUSIONS Sentence context increases reading speed regardless of the position of the text on the retina. Reading rates in peripheral retina are not decreased because of an inability to use sentence context.