Macoir J, Audet T, Breton M F
Centre de recherche en gérontologie et gériatrie, Sherbrooke, Canada.
Cortex. 1999 Dec;35(5):629-45. doi: 10.1016/s0010-9452(08)70824-4.
This article presents a brain-damaged patient (RR) suffering from cognitive deficits following neurological insults, who showed a selective impairment in number transcoding. Except for written verbal numeral to arabic transcoding, his ability to transcode numerals, including writing arabic numerals to dictation, is largely preserved. Other number processing skills, including numeral recognition, numeral comprehension, and calculation, were unimpaired. Semantic and asemantic models of number processing cannot easily account for the patient's performance and it is suggested that the number transcoding system should include different code-dependent pathways for arabic transcoding from spoken verbal numerals and from written verbal numerals. Since the errors produced in the impaired transcoding rely upon the syntactical structure of numeral stimuli, it is also proposed that transcoding code-dependent pathways should reflect the structure of the verbal numeral system, especially the difference between sum and product relationships.
本文介绍了一位脑损伤患者（RR），其在遭受神经损伤后出现认知缺陷，在数字转码方面表现出选择性损伤。除了书面文字数字到阿拉伯数字的转码外，他转码数字的能力，包括听写阿拉伯数字，在很大程度上得以保留。其他数字处理技能，包括数字识别、数字理解和计算，均未受损。数字处理的语义和非语义模型难以轻易解释该患者的表现，研究表明数字转码系统应包括从口头文字数字和书面文字数字进行阿拉伯数字转码的不同代码依赖路径。由于受损转码中产生的错误依赖于数字刺激的句法结构，因此还提出转码代码依赖路径应反映文字数字系统的结构，特别是和与积关系之间的差异。
