Electromagnetic fields (EMF) produced by electronic devices have long raised public concern. Although no studies have shown brain injury due to the use of these devices, some individuals report developing headaches or localized warming during cell phone use. The aim of this study was to determine the effect of radio frequency EMF on human electroencephalography (EEG) signals. A single blind randomized test procedure was used in this study. Ten healthy subjects were exposed to EMF from a cordless phone and wireless router, which emit at 900MHz and 2400MHz, respectively. Three 100 second trials for each condition were conducted on each subject. The subject’s EEG was also measured while wearing a Farabloc® hood which blocks any EMF with frequencies above 1000 Hz. Neither the cordless phone nor the wireless router produced any significant changes in the EEG of the subjects compared to the control condition. Our results imply that the everyday utilized wireless communication devices such as wireless phones and routers have little influence on the electrical activity of the brain in the short term.