Changes

== Sleep-onset REM ==

== Sleep-onset REM ==

{{Main|SOREM}}

{{Main|SOREM}}

Polyphasic schedules, which reduce sleep hours, often rely on the SOREM mechanism, which is an abnormally rapid transition from wakefulness to REM sleep, skipping the period of non-REM sleep that normally characterizes the beginning of the sleep period.<ref name="c" /> After REM debt is accumulated enough, it's common to have SOREM in the beginning of [[naps]] or [[cores]], especially close to the REM peak during the dawn hours, which is done by brain to alleviate REM pressure. SOREM is also common for [[wikipedia:Hypersomnia|hypersomniac]] and [[wikipedia:Narcolepsy|narcoleptic]] patients, who generally have excessive REM requirements.

Polyphasic schedules, which reduce sleep hours, often rely on the SOREM mechanism, which allows to enter REM soon after sleep onset.

 

== References ==

== References ==

{{reflist|refs=

{{reflist|refs=

<ref name="a">{{cite book |title=Psychology |last=Myers |first= David |edition=7th |year=2004 |publisher=Worth Publishers |location=New York |isbn=0-7167-8595-1 |page=[https://archive.org/details/psychology07myer/page/276 276] |url=https://archive.org/details/psychology07myer |url-access=registration |quote=0716785951. |accessdate=2010-01-09}}</ref>

<ref name="a">{{cite book |title=Psychology |last=Myers |first= David |edition=7th |year=2004 |publisher=Worth Publishers |location=New York |isbn=0-7167-8595-1 |page=[https://archive.org/details/psychology07myer/page/276 276] |url=https://archive.org/details/psychology07myer |url-access=registration |quote=0716785951. |accessdate=2010-01-09}}</ref>

<ref name="b">{{cite book|last=Carlson|first=Neil R.|title=Physiology of behavior|date=2013|publisher=Pearson|location=Boston|isbn=9780205239399|edition=11th}}</ref>

<ref name="b">{{cite book|last=Carlson|first=Neil R.|title=Physiology of behavior|date=2013|publisher=Pearson|location=Boston|isbn=9780205239399|edition=11th}}</ref>

}}

}}