Morton L L, Kershner J R
University of Windsor, Faculty of Education, Ontario, Canada.
Int J Biometeorol. 1990 May;34(1):35-41. doi: 10.1007/BF01045818.
Forty normal-achieving and 33 learning disabled (LD) children were assigned randomly to either a negative ion or placebo test condition. On a dichotic listening task using consonant-vowel (CV) combinations, both groups showed an ion-induced increase in the normal right ear advantage (REA). However, the mechanisms for this effect were different for each group. The LDs showed the effect at the right ear/left hemisphere (enhancement). The normal achievers showed the effect at the left ear/right hemisphere (inhibition). The results are consistent with an activation-inhibition model of cerebral function and suggest a functional relationship between arousal, interhemispheric activation-inhibition, and learning disabilities. The LDs may have an interhemispheric dysfunction. Both groups showed superior right ear report and the normal achievers showed overall superiority. Normal achievers showed higher consonant intrusion scores, probably due to a greater cognitive capacity. Age was a significant covariate reflecting developmental capacity changes. Negative air ions are seen to be a tool with potential theoretical and remedial applications.
40名学业正常的儿童和33名学习障碍儿童被随机分配到负离子或安慰剂测试条件下。在一项使用辅音-元音（CV）组合的双耳分听任务中，两组都表现出负离子导致正常的右耳优势（REA）增加。然而，每组产生这种效应的机制不同。学习障碍儿童在右耳/左半球表现出这种效应（增强）。学业正常的儿童在左耳/右半球表现出这种效应（抑制）。这些结果与大脑功能的激活-抑制模型一致，并表明唤醒、半球间激活-抑制与学习障碍之间存在功能关系。学习障碍儿童可能存在半球间功能障碍。两组都表现出右耳报告优势，学业正常的儿童表现出总体优势。学业正常的儿童表现出更高的辅音侵入分数，可能是由于其认知能力更强。年龄是反映发育能力变化的一个显著协变量。负离子被视为一种具有潜在理论和治疗应用价值的工具。
