Lee Chang H
Department of Psychology, Sogang University, Shinsu-dong, Mapo-gu, Seoul 121-742, Korea.
J Psycholinguist Res. 2008 Jan;37(1):59-67. doi: 10.1007/s10936-007-9059-6.
Substantial neurobiological data indicate that the dominant cortical region for printed-word recognition shifts from a temporo-parietal (dorsal) to an occipito-temporal (ventral) locus with increasing recognition experience. The circuits also have different characteristic speeds of response and word preferences. Previous evidence suggested that grain-size increased with word repetition. In the present experiment, we examined morpheme boundaries imposing a limitation on steadily increasing grain-size within a word. We manipulated the type font within a word so that it either emphasized or disguised the word's morphemic structure. The results showed that, even after several repetitions, morphemic structure had an effect on word recognition, although eventually it did become nonsignificant. Thus, the spread of grain-size with repetition does not appear to cross morpheme boundaries easily. These results suggest that skilled, experienced, word recognition may achieve its speed, substantially, by unitizing the word's letters within but not across its morphological units.
大量神经生物学数据表明，随着识别经验的增加，用于印刷文字识别的主要皮质区域从颞顶叶（背侧）转移到枕颞叶（腹侧）区域。这些神经回路也具有不同的特征反应速度和单词偏好。先前的证据表明，随着单词重复，粒度会增加。在本实验中，我们研究了词素边界对单词内粒度稳定增加所施加的限制。我们操纵单词内的字体类型，使其要么强调要么掩盖单词的词素结构。结果表明，即使经过几次重复，词素结构对单词识别仍有影响，尽管最终这种影响确实变得不显著。因此，粒度随重复的扩展似乎不容易跨越词素边界。这些结果表明，熟练的、有经验的单词识别可能主要通过将单词内的字母组合成形态单位而不是跨越形态单位来实现其速度。
