一例“单侧忽视”病例中以刺激为中心的字母形状表征缺陷。

Deficit to stimulus-centered, letter shape representations in a case of "unilateral neglect".

作者信息

Hillis A E, Caramazza A

机构信息

School of Medicine, Johns Hopkins University, Baltimore, MD 21218.

出版信息

Neuropsychologia. 1991;29(12):1223-40. doi: 10.1016/0028-3932(91)90036-8.

DOI:10.1016/0028-3932(91)90036-8

PMID:1791933

Abstract

A brain-damaged subject is described whose pattern of performance in various reading tasks can be explained by proposing damage at a level of the word recognition process in which a representation with stimulus-centered, rather than retinal- or word-centered, coordinates is processed. Analysis of her reading performance as a function of topographical arrangement of letters, position of errors in the letter string, and the effects of letter spacing and of adding a prefix or suffix provide evidence not only for the existence of this level of representation (the letter-shape map in a model proposed by Caramazza and Hillis [3]), but also for specific assumptions about its functioning and structure.

摘要

本文描述了一位脑损伤患者，其在各种阅读任务中的表现模式可以通过假设在单词识别过程的某个水平上存在损伤来解释，在这个水平上，一种以刺激为中心而非以视网膜或单词为中心的坐标表示被处理。对她的阅读表现进行分析，分析内容包括字母的拓扑排列、字母串中错误的位置、字母间距的影响以及添加前缀或后缀的影响，这些分析不仅为这一表征水平（卡拉马扎和希利斯[3]提出的模型中的字母形状图）的存在提供了证据，也为关于其功能和结构的特定假设提供了证据。