Sleep

Question 1

Which aspects can influence the consistence of a circadian rhythm? How do each of them impact sleep?

Answer 1

1. Light below 500nm wave length over the inhibition of the SCN decreasing the release of MEL by the EPT
2. Entertainment and 3. Internal mental processes, over the release of SE, NE, and/or Ox
3. Synchronisation, over the release of MEL at an accustomed time

Question 2

In which sleep phase does memory consolidation occur? How many of these phases would a person experience, in average, over one sleep cycle of approximately 8 hours?

Answer 2

REM, due to the action of NE and SE. The REM phase lasts about 5 to 15 min (due to energy consumption), and it happens in average 5 times per cycle.