We communicate through energy! The receptors read vibrational energy fields such as light, sound and radio frequencies, and if the receptor is atuned to the particular frequency it can alter the proteins and change the shape of the receptor. This is the one of the ways our cells are impacted by the vibrational Universe. "Thought waves" and "emotional waves" being of obvious importance in the field effect on biology. We are immersed in living fields of vibrational information.
Specific frequencies and patters of electromagnetic radiation regulate DNA, RNA and protein syntheses, alter protein shame and function, and control gene regulation, cell division, cell differentiation morphogenesis (the process by which cells assemble into organs and tissues), hormone secretion, nerve growth and function.