The study of the nervous system dates back to [http://en.wikipedia.org/wiki/Ancient_Egypt ancient Egypt]. [[Evidence]] of trepanation, the surgical [[practice]] of either drilling or scraping a hole into the skull with the aim of curing headaches or mental disorders or relieving cranial pressure, being [[performed]] on patients dates back to [http://en.wikipedia.org/wiki/Neolithic Neolithic] times and has been found in various [[cultures]] throughout the world. Manuscripts dating back to 1700BC indicated that the Egyptians had some [[knowledge]] about symptoms of brain damage. | The study of the nervous system dates back to [http://en.wikipedia.org/wiki/Ancient_Egypt ancient Egypt]. [[Evidence]] of trepanation, the surgical [[practice]] of either drilling or scraping a hole into the skull with the aim of curing headaches or mental disorders or relieving cranial pressure, being [[performed]] on patients dates back to [http://en.wikipedia.org/wiki/Neolithic Neolithic] times and has been found in various [[cultures]] throughout the world. Manuscripts dating back to 1700BC indicated that the Egyptians had some [[knowledge]] about symptoms of brain damage. |