State transitions in the nervous system often take shape as traveling waves. whereby one neural state is replaced by another across space in a wave-like manner. In visual perception. transitions between the two mutually exclusive percepts that alternate when the two eyes view conflicting stimuli (binocular rivalry) may also take shape as traveling waves. https://www.nacrack.com/hot-savings-HiBoost-Home-15K-Smart-Link-F20G-5S-IoT-limited-super/