Disclosed herein are methods, systems, and apparatus for treating a medical condition of a patient, involving detecting a physiological cycle or cycles of the patient and applying an electrical signal to a portion of the patient’s vagus nerve through an electrode at a selected point in the physiological cycle. One embodiment disclosed herein is of a steering wheel assembly for a vehicle having a sunroof located in an aperture of a roof of the vehicle having a panel movable with respect to the roof to open and close the aperture. As the electronic devices become more miniaturized, the trench contact structures of this invention are able to be shrunk to achieve low specific on-resistance of Trench MOSFET, and low Vf and reverse leakage current of the Schottky Rectifier. If the intensity value of the light is equal to or below the predetermined light intensity threshold value, the chamber condition is normal. In a yet further aspect, the authentication method and schemes of this invention are suitable for real-time applications where message length remains unknown until the entire message is received, and commencing message authentication cannot be deferred until the end of the message. A lower assembly includes of an o-ring, clear paste reservoir handle, piston, stainless steel metal cleat, bottom cover, base cap with floss spool post and cutter.