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Letter and word identification in the fovea and parafovea
Attention, Perception, & Psychophysics ( IF 1.7 ) Pub Date : 2021-03-21 , DOI: 10.3758/s13414-021-02273-6
Michele Scaltritti , Jonathan Grainger , Stéphane Dufau

We investigated the extent to which accuracy in word identification in foveal and parafoveal vision is determined by variations in the visibility of the component letters of words. To do so we measured word identification accuracy in displays of three three-letter words, one on fixation and the others to the left and right of the central word. We also measured accuracy in identifying the component letters of these words when presented at the same location in a context of three three-letter nonword sequences. In the word identification block, accuracy was highest for central targets and significantly greater for words to the right compared with words to the left. In the letter identification block, we found an extended W-shaped function across all nine letters, with greatest accuracy for the three central letters and for the first and last letter in the complete sequence. Further analyses revealed significant correlations between average letter identification per nonword position and word identification at the corresponding position. We conclude that letters are processed in parallel across a sequence of three three-letter words, hence enabling parallel word identification when letter identification accuracy is high enough.



中文翻译:

中央凹和副凹中的字母和单词识别

我们研究了在凹凹和副凹视觉中单词识别的准确性在多大程度上取决于单词组成字母的可见性变化。为此,我们在三个三个字母的单词的显示中测量了单词识别的准确性,一个在固定位置,另一个在中心单词的左侧和右侧。我们还测量了在三个三个字母的非单词序列的上下文中出现在同一位置时识别这些单词的组成字母的准确性。在单词识别块中,中心目标的准确性最高,而与左边的单词相比,右边的单词的准确性明显更高。在字母识别块中,我们发现所有9个字母都有一个扩展的W形函数,对于三个中心字母以及完整序列中的第一个和最后一个字母,精度最高。进一步的分析揭示了每个非单词位置的平均字母识别与相应位置的单词识别之间的显着相关性。我们得出的结论是,字母是在三个三个字母的单词序列中并行处理的,因此,当字母识别精度足够高时,便可以并行单词识别。

更新日期:2021-03-22
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