The hearing sensations stimulated by an audiofrequency current passed through various types of electrodes attached to different portions of the human head or body have been previously investigated and termed electrophonic hearing. More recently, modulated electromagnetic waves have been described to produce hearing sensations. The experiments reported in this paper investigated hearing phenomena in electrostatic fields when the whole head or parts of its surface are exposed to alternating electrostatic fields of audiofrequency. Threshold data obtained by this method are compared to the data reported by others for the different types of electrophonic stimulation mentioned above. Calculations show that all these types of auditory stimulation on the head surface of normal subjects can be explained quantitatively by mechanical tissue excitation by electrostatic forces. Application of this stimulation method for studying vibrotactile sensations on finger tips and other body areas, as well as research applications in psychoacoustics, are demonstrated and discussed.