空间频率、笔画数及字频对汉字识别的影响

Effects of Spatial Frequency , Strokes, and Word Frequency on Chinese Character Recognition

６ 、９ 、１２ 画高、低字频黑、宋体汉字图像命名实验结果表明，刺激字空间频率为０ ～１－０ｃｐｄ 时命名正确率几乎为零，增加到２－０ 、３－０ 、４－０ 、５－０ｃｐｄ 成分后命名正确率提高，反应时缩短，继续增加到６－０ 、７－０ｃｐｄ成分，命名绩效不再变化；０ ～２－０ｃｐｄ 时笔画数效应及６ 画字字频效应开始出现，０ ～３－０ｃｐｄ 时１２ 画字出现字频效应。汉字辨认的实验结果也大致如此。因此，１－０ｃｐｄ 是汉字识别绩效的零起点，２－０ ～５－０ ｃｐｄ 空间频率带具有关键性作用；汉字识别过程中存在一个没有字频效应的早期加工阶段。

In naming task experiment, infrequent and frequent Chinese characters of 6, 9, 12 strokes were used in hei and song fonts Results reveal that subjects can not correctly name stimuli of 0～1 0cpd spatial frequency content, but reach their suprathreshold recognition respectively for 0～3 0cpd stimuli, and keep the same good performances to name stimuli of 0～5 0cpd or more Stroke effect first emerges in 0～2 0cpd spatial frequency condition Word frequency effect emerges in 0～2 0cpd condition for 6 strokes characters, and in 0～2 5cpd condition for 12 strokes. Similar results were found in another perceptual identification task experiment The 0～1 0cpd condition is the starting point of Chinese character recognition (d ,=0), 2 0～5 0cpd spatial frequency contents play an important role in the two experiments, and word frequency effect absent in early perception of Chinese character identification.