性行為的基本類型

直到最近，宗教和醫學典據曾習慣於在“夜間玷污”或“夜間遺精（nocturnal emission）”的題項下討論整個病症。直到20世紀中葉金西及其同事發表了一些可靠的統計資料為止，這一局面才得到改觀。他們把“夜間遺精”認定為性釋放的一種類型。統計資料顯示，不僅男人，而且許多女人在睡眠中都有性高潮（儘管女性出現性高潮的比例較少）。因而，金西不再談及“夜間遺精”，而是說到“夜間性夢（nocturnal sex dream）”。這個術語可以用於兩性，只不過仍不夠精確。畢竟，性夢很可能會在午睡期間發生，對這種例子，我們必須稱之為“日間性夢（diurnal sex dream，即在白天期間的性夢）”。因此，“睡眠期性高潮（orgasm during sleep）”似乎是可供運用的最簡潔和最精確的術語了。

1. Sexual Self-stimulation: Orgasm During Sleep

Terms

Until fairly recently, religious and medical authorities were used to discussing the entire matter under the heading of "nocturnal pollution" or "nocturnal emission". It was not until around the middle of the 20th century that Kinsey and his associates presented some reliable statistics as to the frequency of this type of sexual outlet. The figures showed that not only males, but also many females, have orgasms in their sleep, although the percentage of females is smaller. As a consequence, Kinsey no longer spoke of "nocturnal emissions", but of "nocturnal sex dreams". This term could be applied to both sexes, but it is still not precise enough. After all, sexual dreams may very well occur during an afternoon nap, in which case they would have to be called "diurnal sex dreams" (i.e., sex dreams during the day). Therefore, it seems that "orgasm during sleep" is the simplest and most accurate term available.