The ambition of this study is not to answer the problem of Molyneux but really to have a new lighting on the perceptive intermodality. That is why, it is necessary to approach at first, the origins of the problem as long from the point of view of the antique philosophy with Aristote, and of the empiricists of XVIIth and XVIIth centuries. Secondly, we are going to approach the contemporary treatment of the question by envisaging at the same time the psychophysiological processing, in particular in the field of the cognitive psychology as well as its contemporary philosophic treatmentin particular by the answers which bring Bach-Y-Rita or Campbell. The stake being to emphasize the new tracks of reflections which brings the science and the tre...