Full-blown generalized spike and wave patterns in electroencephalogram lasting more than 3 seconds are diagnostically significant, suggesting one of the generalized epileptic syndromes.

• 摘要发作间及发作中的脑波在癫癎的诊断上相当重要，长时程（>3秒）的泛发性棘慢波在脑波的判读上，尤其其临床之相关已有较完整的研究。