A method and an apparatus for adjusting a first hearing device based on adjustments of a second hearing device are disclosed. The method of managing one or more domains performed by a domain manager located in a home network includes determining whether to register a first device located in the home network to a domain, and providing data required to share content between the first device and a second device registered to the domain according to the determination. Another particulate component such as particular polymer, filler, pigment, solid lubricant, etc. Methods in accordance with the invention can be used to treat brain damage, brain disease, andor brain disorders. An alternating current power supply is electrically coupled to the flexible, reshapeable cable assembly.