• Recall the way EEGs are measured and the limitations of the technique

EEGs have a universal lead system where leads are attached to the same location on the head internationally and readings are taken, readings can be taken when an individual is asleep or when they are doing an exercise, often when an individual is doing a rhythmic exercise the waves are high and big together but non-rythmic is neurons firing randomly thing mexican wave vs random waves from everyone.

• Recall the stages of sleep and the associated neuronal activity for each stage.

the different phases of sleep all have differing levels of neuronal activity