Timed stimulation of both somatosensory system and auditory system is controlled, in such a manner, that an individual’s brain activity is altered through spike-timing dependent plasticity, thereby reducing or removing tinnitus. The orifice plates have a thicker border surrounding a thinner orifice area. The voltage-sensing module is electrically connected to a battery and is adopted for sensing a battery voltage of the battery. The ride system includes first and second passenger vehicles that are spaced apart on and supported by the support. A text message is also automatically sent to a recipient who is pre-designated by the user.