Department of Psychiatry, Shiga University of Medical Science, Otsu, Japan.
Department of Sleep and Behavioral Sciences, Shiga University of Medical Science, Otsu, Shiga, Japan.
Cephalalgia. 2021 Nov;41(13):1396-1401. doi: 10.1177/03331024211021773. Epub 2021 Jun 23.
The pathology underlying exploding head syndrome, a parasomnia causing a loud sound/sense of explosion, is not well understood. Kappa rhythm is a type of electroencephalogram alpha band activity with maximum potential between contralateral temporal electrodes We report a case of preceding kappa activity before exploding head syndrome attacks.
A 57-year-old woman complained of explosive sounds for 2 months; a loud sound would transpire every day before sleep onset. She was diagnosed with exploding head syndrome. During polysomnography and the multiple sleep latency test, the exploding head syndrome attacks occurred six times. A kappa wave with activity disappearing a few seconds before most exploding head syndrome attacks was observed. The alpha band power in T3-T4 derivation gradually waxed followed by termination around the attacks.
This case demonstrated that the dynamics of kappa activity precede exploding head syndrome attacks. Finding ways to modulate electroencephalogram oscillation could elucidate their causality and lead to therapeutic intervention.
爆炸头综合征是一种导致巨响/爆炸声的睡眠障碍，其潜在的病理学机制尚未完全阐明。κ 节律是一种脑电图 α 波段活动，在对侧颞电极之间具有最大电位。我们报告了一例在爆炸头综合征发作前出现 κ 活动的病例。
一名 57 岁女性抱怨说，她已经有 2 个月的时间每天在入睡前都会听到爆炸声。她被诊断为爆炸头综合征。在多导睡眠图和多次睡眠潜伏期试验中，共发生了 6 次爆炸头综合征发作。在大多数爆炸头综合征发作前，观察到 κ 波活动消失前的几秒钟。T3-T4 导联的α波段功率逐渐增加，然后在发作时终止。
本病例表明 κ 活动的动力学先于爆炸头综合征发作。寻找调节脑电图振荡的方法可以阐明它们的因果关系，并导致治疗干预。
