查詢結果分析
來源資料
相關文獻
- 後設對比遮蔽效應與中文閱讀障礙視知覺缺陷探究
- Chinese Dyslexia and the Language-specific Representation Principle
- 中文發展性閱讀障礙
- 國民小學閱讀教學之探討
- A Computer-Based Test for Chinese Dyslexia Diagnosis
- 文字種類與顯示方向對閱讀視認度的影響
- 青少年閱讀行為與公共圖書館服務探討:以雲林縣立文化中心圖書館閱覽室青少年讀者為例
- The EFL Reading Habits of Chinese Culture University Students
- Effects of Introducing Free Reading and Language Acquisition Theory on Students' Attitudes Toward the English Class
- 提高語文能力的要訣--選擇好書, 大量閱讀
頁籤選單縮合
題 名 | 後設對比遮蔽效應與中文閱讀障礙視知覺缺陷探究=Metacontrast Masking and Visual Processing Deficits in Chinese Dyslexia |
---|---|
作 者 | 楊憲明; | 書刊名 | 臺南師院學報 |
卷 期 | 34 2001.06[民90.06] |
頁 次 | 頁403-441 |
分類號 | 176.12 |
關鍵詞 | 中文閱讀障礙; 視覺處理; 後設對比遮蔽; 視覺瞬態系統; 閱讀; Chinese dyslexia; Visual processing; Metacontrast masking; Visual transient system; Reading; |
語 文 | 中文(Chinese) |
中文摘要 | 本研究旨在探討中文閱讀障礙者是否存在由magno視覺神經細胞構成的視覺瞬態 系統的視覺處理缺陷。研究者藉由一種後設對比遮蔽的方法來探究這個問題。這種方法已被 證實能夠很敏銳的探測magno和parvo這二種視覺神經細胞的功能。實驗時,受試者在視覺 後向遮蔽的情境下,進行中文字元的辨認作業。目標字元與遮蔽字元以10毫秒到150毫秒等 各種不同的SOA間隔來呈現,讓受試者辨認目標字元。字元刺激呈現的位置包括視網膜中心 位置和視網膜外圍區域上的一個位置。字元刺激亦依照字元的使用頻次和字元的結構複雜度 區分為四個類別。研究結果發現,在規網膜中心位置辨認低使用頻次類別的字元時,閱讀障 礙者與一般閱讀能力者在不同的SOA的辨認正確率平均數,所構成的反應曲線都是一個U字 形曲線,但兩者反應曲線的最低點位置是在不同的SOA點上,閱讀障礙者反應曲線的最低點 位置比一般閱讀能力者反應曲線的最低低位置早出現,亦即在較短的SOA點上。再者,研究 發現,在視網膜外圍區域位置辨認低使用頻次類別的字元時,閱讀障礙者的反應曲線並沒有 形成U字形曲線,相對於一般閱讀能力者的反應曲線仍然是U字形曲線。以上的研究結果顯 示,和拼音文字閱讀璋礙者一樣,中文閱讀障礙者的視覺瞬態系統運作有其缺陷存在,而這 缺陷被認為是導致閱讀障礙發生的一個重要原因。 |
英文摘要 | The purpose of the study is to investigate whether Chinese dyslexics show visual processing deficits that are related to the visual transient system, which is constituted with mango cells. To explore the work, a method of metacontrast masking that proves to be sensitive to functions of parvo cells and mango cells was employed in the study, where subjects were required to identify Chinese characters in the context of visual backward masking. In a trial, a target and a masking character were consecutively displayed with varying SOAs ranging from 10 ms to 150 ms, either in the center of retina of in a prespecified peripheral position. Subjects were asked to identify the target character. Stimulus characters in the experiment were classified into four types in terms of character frequency and character structural-complexity. The results of the study showed that in the identification of low-frequency characters in the center of retina, both dyslexic and normal readers' means of percentage of correct identification along each SOA point form a U-shape curve, but the lowest points of their curves locate at different SOA points, with the location of the lowest point of dyslexic readers' curve appearing earlier than that of normal readers. Further, in the identification of low-frequency characters in the peripheral position, means of response of dyslexic readers did not show a U-shape curve in contrast to normal readers' U-shape curve. These results indicate that Chinese dyslexics, similar to alphabetic dyslexics, exhibit a deficit in the operation of the visual transient system, which is frequently claimed to be an important cause of dyslexia. |
本系統中英文摘要資訊取自各篇刊載內容。