Vection is an illusion sensation of self-motion provoked by watching visual oscillation. Traditionally, vection perception has been qualified using frequency responses. Indeed, the concept of frequency response is a common way to quantify the responses of visual oculomotor functions such as optokinetic nystagmus (OKN) and vestibular ocular reflex (VOR). This study explores whether frequency is the only or main determining factor. In other words, would visually oscillations of the same frequency but with different combinations of amplitude and velocity provoked the same or different levels of vection? The answer to this question will significantly affect the potential use of frequency responses of vection perception and other visual oculomotor responses.