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The core length on the standard dual core schedules often isn't a multiple of 1.5h. It was suggested that sleep cycles are compressed/lengthened in this case.<ref>[https://polyphasic.net polyphasic.net]. Retrieved 17-12-2020.</ref>
 
The core length on the standard dual core schedules often isn't a multiple of 1.5h. It was suggested that sleep cycles are compressed/lengthened in this case.<ref>[https://polyphasic.net polyphasic.net]. Retrieved 17-12-2020.</ref>
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== Dual core schedules ==
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== Alternative mechanism ==
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{{Alternative Hypothesis}}
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It was noticed by some polyphasic community members that a longer core length, which is not a multiple of 1.5h, did not lead to the cycle lengthening on dual core schedules in some cases. This is mostly applicable to the standard Segmented and DC1 schedules.
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=== Core 1 ===
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The first core on the standard Segmented is 3.5 hours, and 3.3 hours on DC1. The additional 20-30 minutes often are added to [[cores]] for getting more [[wikipedia:Non-rapid_eye_movement_sleep|NREM2]] or [[wikipedia:Rapid_eye_movement_sleep|REM]] sleep. In this case, sometimes the core has a normal structure with the standard sleep cycles length. Some additional light sleep is inserted after the second core, which makes waking up and staying awake easier.
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=== Core 2 ===
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According to the [[EEG]] readings of some community members, the second core on dual core schedules often starts with [[SOREM]], following by a regular non-lengthened sleep cycle. This is also a possible reason why Segmented sleep is a viable schedule despite having fewer cycles. In fact, it might have a regular number of the REM episodes, considering SOREM in the second core is the fifth one.
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=== Examples ===
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<gallery>
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File:Sekvanto segshort.png|[[User:Sekvanto|Sekvanto]], Segmented-shortened, Zeo EEG. The first core has additional light sleep in the end; the second core starts with SOREM.
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File:MostlySmart DC4 cut.png|MostlySmart, DC4, Zeo EEG. SOREM in the second core.
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File:Zandimna segmented sorem eeg.png|[[User:Zandimna|Zandimna]], Segmented-recovery, Zeo EEG. Additional light sleep in the end of core 1; SOREM in core 2.
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</gallery>
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== Schedules ==
 
Segmented and siesta, along with [[E1|Everyman 1]] (a single core sleep schedule), tend to have high success rates within the polyphasic community.<ref>[https://youtu.be/BA24s8KwBi0 Polyphasic Survey Results and Analysis (2018)]</ref>
 
Segmented and siesta, along with [[E1|Everyman 1]] (a single core sleep schedule), tend to have high success rates within the polyphasic community.<ref>[https://youtu.be/BA24s8KwBi0 Polyphasic Survey Results and Analysis (2018)]</ref>
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[[File:Bimaxion.png|thumb|A standard Bimaxion variant]]
 
[[File:Bimaxion.png|thumb|A standard Bimaxion variant]]
 
[[Bimaxion]] is a strict schedule that combines elements of DC2 and [[Dymaxion]] (an experimental nap-only schedule), designed as a transitional schedule with Dymaxion in mind. The total sleep time is 4h.
 
[[Bimaxion]] is a strict schedule that combines elements of DC2 and [[Dymaxion]] (an experimental nap-only schedule), designed as a transitional schedule with Dymaxion in mind. The total sleep time is 4h.
  −
== Alternative mechanism ==
  −
{{Alternative Hypothesis}}
  −
It was noticed by some polyphasic community members that a longer core length, which is not a multiple of 1.5h, did not lead to the cycle lengthening on dual core schedules in some cases. This is mostly applicable to the standard Segmented and DC1 schedules.
  −
  −
=== Core 1 ===
  −
The first core on the standard Segmented is 3.5 hours, and 3.3 hours on DC1. The additional 20-30 minutes often are added to [[cores]] for getting more [[wikipedia:Non-rapid_eye_movement_sleep|NREM2]] or [[wikipedia:Rapid_eye_movement_sleep|REM]] sleep. In this case, sometimes the core has a normal structure with the standard sleep cycles length. Some additional light sleep is inserted after the second core, which makes waking up and staying awake easier.
  −
  −
=== Core 2 ===
  −
According to the [[EEG]] readings of some community members, the second core on dual core schedules often starts with [[SOREM]], following by a regular non-lengthened sleep cycle. This is also a possible reason why Segmented sleep is a viable schedule despite having fewer cycles. In fact, it might have a regular number of the REM episodes, considering SOREM in the second core is the fifth one.
  −
  −
=== Examples ===
  −
<gallery>
  −
File:Sekvanto segshort.png|[[User:Sekvanto|Sekvanto]], Segmented-shortened, Zeo EEG. The first core has additional light sleep in the end; the second core starts with SOREM.
  −
File:MostlySmart DC4 cut.png|MostlySmart, DC4, Zeo EEG. SOREM in the second core.
  −
File:Zandimna segmented sorem eeg.png|[[User:Zandimna|Zandimna]], Segmented-recovery, Zeo EEG. Additional light sleep in the end of core 1; SOREM in core 2.
  −
</gallery>
      
== References ==
 
== References ==
 
<references />{{TNT|Polyphasic Sleep Schedules}}
 
<references />{{TNT|Polyphasic Sleep Schedules}}
 
[[Category:Schedules]]
 
[[Category:Schedules]]
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