Question

Ryan is hooked up to an electroencephalograph (eeg) in a sleep lab. As the researcher watches the printout from the eeg, sleep spindles begin to appear. Based on this information, the researcher can conclude that ryan:

Answer 1

Based on this information, the researcher can conclude that Ryan  "has just entered Stage 2 sleep".

Stage 2 sleep, which for the most part keeps going around 20 minutes, is described by an abating pulse and a reduction in body temperature. Your body lessens its action to set you up to go into a profound rest.  

It winds up harder to wake you up.  

Your brain begins to produce bigger waves.  

Your circulatory strain likewise diminishes, and other metabolic capacities back off as well.