摘要

使用带两组双极电极和应变计的腔内记录管从正常受试者的乙状结肠记录电和机械活动。记录了四种不同类型的电活动。(1)电气控制活动(ECA)。这种活动的振幅和频率随时间而变化，控制波不锁相。低、高频段优势分量均值分别为3.86 +/- 0.18 SD和10.41 +/- 0.46 SD c/min。总体优势频率分量大多在2.0 ~ 9.0 c/min的较低频率范围内。(2)离散电响应活度(DERA)。该活动表现为短时间的响应电位爆发(小于10 s)，其重复频率在结肠电控制活动总频率2.0-13.0 c/min范围内。该活性的平均持续时间为2.24 +/- 1.30 SD s。(3)连续电反应活性(CERA)。这种活动表现为长时间的突发(大于10秒)的响应电位，与电气控制活动无关。 Its mean duration was 14.78 +/- 3.68 SD s. This activity generally did not propagate. (4) Contractile electrical complex (CEC). This activity appeared as oscillations in the frequency range of 25-40 c/min and was also not related to electrical control activity. This activity propagated, sometimes proximally and sometimes distally. Its mean duration was 18.87 +/- 9.22 SD s. The latter three types of electrical activities were all associated with different types of contractions. These contractions, however, did not always occlude the lumen. Colonic electrical control activity controls the appearance of discrete electrical response activity in time and space. The mechanism of generation of continuous electrical response activity and contractile electrical complex is not yet known.