This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nervous System, Subject name: Physiology
[{'content': 'Adult human who are awake with mind wanderingand the eyes closed. Most likely EEG pattern is \nSelect and explain. \nA. Alpha - rhythm, B. Beta rhythm, C. Theta rhythm, D. Delta waves', 'role': 'user'}, {'content': 'Answer: A \nExplanation: (Alpha - rhythm) (194 - 95- Ganong22nd) (836. K.S (233- Ganong 23rd)* Alpha rhythm - awake, at rest mind wandering and the eye closed, 8-12 Hz frequency, 50-100 mv amplitude* Beta rhythm - 18-30Hz, lower amplitude* Gamma - oscillations - at 30- 80 Hz* Theta rhythm - larger amplitude , regular 4-7 Hz waves* Delta waves - become more prominent with low frequency and high amplitudeCharacteristicREM- sleepNon-REM sleep* Rapid eye movements, Dreams muscle twitchingPresentAbsent* Heart rate, BP. Respiration Body temperatureFluctuatingStable* NeurotransmitterNoradrenalineSerotonin', 'role': 'assistant'}]