Anesthetics, Inhalation 2 Humans 2 general anesthesia 2 human 2 inhalation anesthetic agent Adolescent 1 Adult 1 Anesthesia 1 Anesthesia, Dental 1 Anesthesia, General 1 Article 1 BOLD signal 1 Brain 1 Child 1 Child, Preschool 1 Connectome 1 Consciousness 1 Default Mode Network 1 England 1 Magnetic Resonance Imaging 1 Male 1 Nerve Net 1 Nitrous Oxide 1 Procedures and Techniques Utilization 1 Risk Factors 1 Sevoflurane 1 Tooth Extraction 1 Young Adult 1 adolescent 1 adult 1