Disclosed are compounds and methods for treating neurological and other disorders by administering to a subject in need thereof an effective amount of a compound having binding andor modulation specificity for GFR\u03b1 receptor molecules, which can be mimetics of glial-derived neurotrophic factor family ligands, GFR\u03b1RET signaling pathway agonists, andor direct RET agonists. In this way, a service provider andor an advertiser can transmit a single advertisement to all the television stations regardless of their geographic location and other user specific information, and need not re-transmit the advertisement even if there is a change in the show’s program description. All control and safety modules communicate over a single power and communications line with the controller, providing digital transmissions to the controller of measurements taken by the sensors. A gate dielectric is received between the gate electrode and the floating body channel region.