Turandot out Turandot's command: "Cosi comanda Turandot" – "This night, none shall sleep in Peking! The penalty for all will be death if the Prince's name is not discovered by morning". The Prince waits for dawn and anticipates his victory: "Nessun dorma" – "Nobody shall sleep!" Ping, Pong, and Pang appear and offer the Prince women and riches if he will only give up Turandot ("Tu che guardi le stelle"), but he refuses. A group of soldiers then drag in Timur and Liù. They have been seen speaking to the Prince, so they must know his name. Turandot enters and orders
Neuroscience of sleep of nightmare production have been proposed including neo-Freudian models as well as other models such as image contextualization model, boundary thickness model, threat simulation model etc. Neurotransmitter imbalance has been proposed as a cause of nightmares, as also affective network dysfunction- a model which claims that nightmare is a product of dysfunction of circuitry normally involved in dreaming. As with dreaming, none of the models have yielded conclusive results and studies continue about these questions. Neuroscience of sleep The neuroscience of sleep is the study of the neuroscientific and physiological basis of the nature of sleep and its functions. Traditionally,