 
 <prompt> Wetin part of di brain dey control sleep? Based on di previous question, write a context wey contain di answer. E fit be 1 - 20 sentences. Context: <response>: The SCN dey send message go some areas for inside hypothalamus, brainstem, and midbrain wey dey involved for how sleep-wake cycles dey work. An important part of the system na the reticular formation, wey be group of neuron-clusters wey dey spread all over for inside the core of the lower brain. Reticular neurons dey send signal go the thalamus, wey go send signal wey dey control activity level go every part of the cortex. If damage happen to the reticular formation, e fit cause person to dey for permanent coma state. 