Clinical aspects of the "third rhythm" of the temporal lobe.

S Shinomiya, T Fukunaga, K Nagata
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引用次数: 12

Abstract

We studied clinical aspects of the "third rhythm," which was first described by Niedermeyer as alpha-like activity of the temporal lobe. By scalp EEG, temporal alpha-like activity was recorded in 15 (0.30%) of 4929 patients over 20 years of age. The temporal alpha-like activity was observed in 5 patients who had clinical and brain imaging findings indicating the presence of a cerebrovascular disorder. The alpha-like rhythm of these patients was left-sided, and wicket spikes appeared in the same region as the alpha-like rhythms in 4 of the 5 patients. In 8 of the 15, the temporal alpha-like rhythm was recorded over the defective bone or replacement bone after intracranial surgery. The alpha-like rhythm of these patients was similar to breach rhythm in the temporal region. The remaining 2 patients had not undergone intracranial surgery nor did they show symptoms of cerebrovascular disorders. The temporal alpha-like rhythms in one of these 2 might be a physiological third rhythm detected by scalp EEG through congenital bone thinning. Our observation supports the existence of intrinsic activity of the temporal lobe (the third rhythm). The third rhythm can be recorded by routine scalp EEG in some clinical conditions, and it is important to recognize this rhythm when one encounters temporal rhythmic activity independent of alpha rhythm of the occipital lobe.

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颞叶“第三节奏”的临床方面。
我们研究了“第三节奏”的临床方面,尼德迈耶首先将其描述为颞叶的α样活动。4929例20岁以上患者中15例(0.30%)录得颞叶α样活动。在5例临床和脑成像结果显示存在脑血管疾病的患者中观察到颞叶α样活动。这些患者的α样心律位于左侧,5例患者中有4例与α样心律出现在同一区域。15例中有8例在颅内手术后缺损骨或置换骨上记录了颞α样节律。这些患者的α样节律与颞区断裂节律相似。其余2例患者未行颅内手术,也未出现脑血管疾病的症状。其中一种的颞α样节律可能是头皮脑电图通过先天性骨变薄检测到的生理第三节律。我们的观察支持了颞叶内在活动(第三节奏)的存在。在某些临床条件下,常规头皮脑电图可以记录到第三种节律,当遇到独立于枕叶α节律的时间节律活动时,识别这种节律是很重要的。
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