50:. The phenomenon was first documented in 1970 by Karacan et al., with a single aforementioned follow-up study in 1983 by Fisher et al. More recent research includes a 2023 study by Gören et al., who found that their subjects displayed vaginal pH changes at different periods throughout the night. The study did not measure specific sleep phases. Increases in vaginal pH are associated with sexual arousal and clitoral erection.
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45:
According to Fisher et al., the increase in vaginal blood flow associated with NCT during REM sleep is similar to the process in men in frequency, i.e. 95% of REM phases. It does occur a bit more often in non-REM sleep, and each episode appears shorter in duration. In terms of size, NCT is similar to
137:
Fisher, C.; Cohen, H. D.; Schiavi, R. C.; Davis, D.; Furman, B.; Ward, K.; Edwards, A.; Cunningham, J. (April 1983). "Patterns of female sexual arousal during sleep and waking: Vaginal thermo-conductance studies".
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that induced by erotic stimulation when awake. The erection may be associated with erotic dreams and even, occasionally,
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188:"Nocturnal Vaginal pH Monitoring: A Possible New Assessment Method for Female Sexual Function"
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Karacan, I, Rosenbloom, AL and
Williams, RL (1970) The clitoral erection cycle during sleep.
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38:, females experience clitoris tumescence and engorgement of the vagina, mainly during the
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secrete alkaline fluid to lubricate the vagina during arousal, increasing vaginal pH.
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during sleep or when waking up. Similar to the process in males,
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Gören, Mehmet Reşit; Özer, Cevahir; Oğuzülgen, İbrahim (2023).
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101:Robert Michels (1985). Robert Michels (ed.).
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84:"What happens 'down below' while you sleep"
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553:Rapid eye movement sleep behavior disorder
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107:. Vol. 1. Lippincott. p. 139.
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16:Clitoral erection during or after sleep
7:
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923:
943:. You can help Knowledge (XXG) by
205:10.4274/jus.galenos.2023.2022.0051
14:
927:
393:Obesity hypoventilation syndrome
388:Central hypoventilation syndrome
548:Periodic limb movement disorder
515:Non-24-hour sleep–wake disorder
1:
820:Biphasic and polyphasic sleep
628:Nocturnal clitoral tumescence
490:Advanced sleep phase disorder
192:Journal of Urological Surgery
20:Nocturnal clitoral tumescence
500:Delayed sleep phase disorder
428:Excessive daytime sleepiness
633:Nocturnal penile tumescence
505:Irregular sleep–wake rhythm
140:Archives of Sexual Behavior
36:nocturnal penile tumescence
1021:
922:
495:Cyclic alternating pattern
711:Behavioral sleep medicine
520:Shift work sleep disorder
468:Sleep state misperception
26:), colloquially known as
268:Rapid eye movement (REM)
64:Rapid eye movement sleep
32:swelling of the clitoris
589:Exploding head syndrome
398:Obstructive sleep apnea
904:Sleeping while on duty
453:Idiopathic hypersomnia
726:Neuroscience of sleep
458:Night eating syndrome
443:Kleine–Levin syndrome
880:Sleep and creativity
875:Sleep and breathing
331:Sensorimotor rhythm
30:, is a spontaneous
885:Sleep and learning
638:Nocturnal emission
538:Nightmare disorder
403:Periodic breathing
152:10.1007/BF01541556
52:Bartholin's glands
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895:Sleep deprivation
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890:Sleep and memory
830:Circadian rhythm
577:Benign phenomena
479:Circadian rhythm
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90:. June 23, 2018.
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808:Procrastination
761:Four-poster bed
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688:Polysomnography
666:Sleep induction
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613:Sleep paralysis
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373:Mouth breathing
351:Sleep disorders
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273:Quiescent sleep
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661:Sleep hygiene
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146:(2): 97–122.
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114:9780397506866
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48:sleep orgasms
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945:expanding it
934:
919:
781:Sleeping bag
627:
558:Sleepwalking
543:Night terror
260:sleep cycles
195:
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118:. Retrieved
103:
96:
87:
78:
44:
28:morning bean
27:
23:
19:
18:
865:Second wind
840:Dream diary
716:Sleep study
656:Sleep diary
608:Hypnopompia
603:Sleep onset
594:Hypnic jerk
433:Hypersomnia
383:Catathrenia
378:Sleep apnea
288:Brain waves
258:Stages of
984:Categories
899:Sleep debt
845:Microsleep
825:Chronotype
739:Daily life
623:Somnolence
599:Hypnagogia
530:Parasomnia
448:Narcolepsy
360:Anatomical
341:Theta wave
311:Gamma wave
306:Delta wave
296:Alpha wave
174:Sleep Res.
120:2013-10-14
104:Psychiatry
70:References
909:Sleepover
860:Power nap
855:Nightwear
721:Melatonin
683:Somnology
648:Treatment
481:disorders
420:Dyssomnia
326:PGO waves
321:Mu rhythm
316:K-complex
301:Beta wave
278:Slow-wave
160:144475302
88:NZ Herald
40:REM sleep
995:Clitoris
776:Mattress
751:Bunk bed
671:Hypnosis
463:Nocturia
438:Insomnia
58:See also
937:anatomy
803:Bedtime
798:Bedroom
793:Bedding
788:Bed bug
771:Hammock
676:Lullaby
510:Jet lag
410:Snoring
368:Bruxism
176:, 7:338
42:phase.
870:Siesta
756:Daybed
584:Dreams
158:
111:
990:Sleep
935:This
813:Story
766:Futon
699:Other
247:Sleep
156:S2CID
941:stub
249:and
109:ISBN
850:Nap
746:Bed
200:doi
148:doi
24:NCT
986::
897:/
601:/
196:10
194:.
190:.
154:.
144:12
142:.
129:^
86:.
972:e
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947:.
239:e
232:t
225:v
208:.
202::
162:.
150::
123:.
22:(
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