A short text giving a wonderful introduction to the general anesthesia.
A useful tool on the modern medicine, it allows surgeons to execute procedures that were impracticable before.
Even though, how the anesthesia causes the controlled loss and reversible of conscious still not fully understood. Ether, chloroform and halothane act on the neurons of the reticular activator system, suppressing the vigilance and the conscience, and over the neurons of the hipocampus, erasing the memory for a short period of time. Those substances also affect the nucleus of the thalamus when it cut the flux of sensorial information from the body to the brain. Together, the actions of the anesthesia over the brain produce an experience of deep oblivion.