Corsi-Cabrera M, Trías G, Guevara M A, Haro R, Hernández A
Departamento de Psicofisiología, Facultad de Psicología, Universidad Nacional Autónoma de México, México, D.F.
Percept Mot Skills. 1995 Apr;80(2):504-6. doi: 10.2466/pms.1995.80.2.504.
High interhemispheric EEG correlation (INTERr) or coherence has been interpreted as a consequence of callosal interconnections. The EEG of a callosotomized (two anterior thirds) 32-yr.-old patient was recorded during relaxed wakefulness with eyes closed. 100 2-sec. artifact-free epochs were digitally filtered into traditional broad bands and INTERr was calculated by means of Pearson product-moment coefficients. INTERr between anterior regions, where they should be expected, showed very few differences between data of this patient and those of two control groups of healthy persons. Only a few differences were observed between posterior regions where the callosum was intact. These results suggest that the role of the callosum is not crucial for INTERr and that subcortical influences and functional differentiation between hemispheres may be more plausible explanations for INTERr.
高半球间脑电图相关性（INTERr）或相干性被解释为胼胝体互连的结果。在一名32岁胼胝体切开术（前三分之二）患者闭眼放松清醒状态下记录脑电图。将100个2秒无伪迹时段进行数字滤波，分为传统宽带，并通过皮尔逊积差系数计算INTERr。在预期会出现高半球间脑电图相关性的前部区域，该患者的数据与两个健康对照组的数据之间几乎没有差异。在胼胝体完整的后部区域仅观察到少数差异。这些结果表明，胼胝体对高半球间脑电图相关性的作用并非至关重要，对于高半球间脑电图相关性而言，皮质下影响和半球间功能分化可能是更合理的解释。
