In which stage of anaesthesia patient becomes hyperactive:

Stage I – Analgesia and conscious sedation Stage II – Stage of delerium Stage III – Stage of surgical anesthesia Plane I – Pupils dilate progressively with the depth of anesthesia. Lid reflex, swallowing, retching and vomiting get abolished. Corneal reflex present. Conjunctival reflex is absent. Pharyngeal reflex lost. Plane II – Eye balls fixed, reflexes arising from the larynx also abolished. Plane III – Asynchrony between thoracic and abdominal movements. Progressive paralysis of intercostal muscles, pupillary light reflex and the corneal reflex is lost. Plane IV – Complete intercostal muscle paralysis. Pupils are dilated. Muscles are flaccid. Stage IV – Stage of respiratory paralysis