关键词: 脑损伤; 数字加工和计算; 失算症; 参考标准

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