Abstract:

Objective To compare the scores of number processing and calculation standardized test(NPC test) between patient group and normal control group. To investigate features of acalculia in patients with different lateral brain injury. Methods Forty patients with brain injury (twenty left-brain damaged cases, nine right-brain damaged cases and eleven bilateral brain damaged cases) and forty-eight normal persons were tested with NPC. The data of all subjects were statistical analyzed. Results Patient group had lower total scores and items’ scores for number sequences, numerical comprehension, numerical transcodings, calculation than normal control group in NPC test(P <0.01). LBD patients’ total scores and items’ scores for numerical transcodings, calculation in NPC test were lower than RBD group(P <0.05). The scores did not significantly differ between BBD group and LBD group, or between BBD group and RBD group(P >0.05). Conclusion The abilities of number processing and calculation in patient group are lower than those in normal group. The impairment performance of number processing and calculation in LBD patients is closely associated with verbal ability. The impairment performance in RBD patients has relation with non-verbal cognitive ability, such as visual-spatial ability.

Key words: Brain injuries; Number processing and calculation; Acalculia; Reference standards

摘要：

目的 比较脑损伤组与对照组的数字加工和计算测验（Number Processing and Calculation，NPC）成绩， 探讨不同侧别脑损伤患者失算症的特点。 方法 对40例脑损伤患者（左脑20例，右脑9例，双侧11例）和48例正常对照者进行NPC测验，对所 得数据进行统计分析。 结果 脑损伤组NPC测验的数字序列、数字理解、数字编码转换、计算成绩和总分均明显低于对照组 （P <0.01）。左脑损伤组的数字编码转换、计算成绩和总分低于右脑损伤组（P <0.05）。双侧脑损伤组 分别与左脑损伤组、右脑损伤组的成绩间差异无统计学意义（P >0.05） 结论 脑损伤患者的数字加工和计算能力较正常人下降。左脑损伤患者的受损表现与言语能力密切 相关。右脑损伤患者的受损表现与视空间等非言语认知能力有联系。

关键词: 脑损伤; 数字加工和计算; 失算症; 参考标准