The effect of endogenous pacemakers and exogenous zeitgebers on the sleep/wake cycle.

The file below is a PowerPoint slideshow but if you open in google slides with the free pear deck add on, you can access the interactive aspects, and use to revise this topic and/or work with students online. It does not contain all the information, as the expectation is that they will have read up in advance.

Sort the studies (studies that support endogenous pacemakers can also be used to refute exogenous zeitgebers and vice versa) so we are really just sorting into two boxes.

Endogenous pacemakers and exogenous zeitgebers bingo cards

Check out some “brain facts” with this 3d model which gives an idea of where the hypothalamus is located (the structure containing the suprachiasmatic nucleus) https://www.brainfacts.org/3d-brain#intro=false&focus=Brain-limbic_system-hypothalamus

Wordsearch with key terms (could be helpful for EAL):

Practice question

Sandy has just got back from her holiday. She had a great time but the flight home was quite long and she feels exhausted. At work the next day she feels sick and can’t concentrate. She also feels like she is going to fall asleep at her desk. Her colleague says she must have ‘jet-lag’ and tells her that its important to stay awake until her normal bedtime rather than going to bed as soon as she gets home from work.

Discuss the role of endogenous pacemakers and exogenous zeitgebers on the sleep-wake cycle. You must refer to Sandy in your answer. [16]