活動內容

演講者:

李佳穎 (本所研究員)

How literacy affects spoken word recognition Chia-Ying Lee Institute of Linguistics, Academia Sinica   Speech has primacy over written language both in the history of mankind and in the life of an individual (Liberman, 1992). Literacy acquisition is a process for understanding how orthographic units map onto the preexisting phonological and semantic representations. The automatic phonological activation in reading is naturally expected and well-demonstrated in visual word recognition. Meanwhile, there seems no apparent advantage in activating a word's orthography during spoken word recognition, as the link between phonology and semantics is established before literacy. However, recent evidence suggests that learning to read and write might change the way people process and represent spoken language. For example, studies have found that that it is harder two decide the two spoken words rhyme when they are spelled differently (e.g., rye–pie) than when they are spelled the same (pie–tie), the so-called orthographic consistency effect. An issue under debate is whether the orthographic consistency effect arises from the obligatory activation of orthographic representation during spoken word recognition (the orthographic co-activation view) or implies the literacy experience fundamentally changes the preexisting phonological representation in the mental lexicon (the phonological restructuring view). The pervasive homophony of Chinese implies the orthographic form is crucial for Chinese spoken word recognition. In this talk, I will present a series of ERPs and fMRI studies to dissociate two types of orthographic effects during Chinese spoken word recognition. One is the phonology-to-orthography consistency (POC), which indexes orthographic impact at the radical level. The other one is the homophone density (HD), which indexes the orthographic variation on the character level. Our data demonstrated the POC effect on N400 and originated from the speech network. It is in favor of the phonological restructuring view and suggests the sublexical orthographic variations may restructure preexisting phonological representations through literacy. We also demonstrated the HD effect in late positive component (LPC) and originated from the left inferior frontal gyrus and the temporal-parietal-occipital junction for orthographic processing. The HD effect should be reasoned as the orthographic co-activation. The POC and HD effects reflect different nature of orthographic influence on Chinese spoken word recognition. 

主/協辦單位

語言學研究所

時間 & 地點

  • 開始:Nov 23, 2020,10:00 AM
  • 結束:Nov 23, 2020,12:00 PM
  • 地點:

    人文館語言所5樓519會議室