You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is The cell bodies of orexinergic neurons are present in and explain in detail?
Brains from humans with narcolepsy often contain fewer hypocretin (orexin) producing neurons in the hypothalamus. hypothalamic neurons release orexin to play a role inswitching between sleep and wakefulness Ganongs review of medical physiology;26rd edition;pg:268,273