To speak, therefore, of an electric current in the nerves, is to use quite as symbolic an expression as if we compared the action of the nervous prin….

We shall probably never attain the power of measuring the velocity of nervous action; for we have not the opportunity of comparing its propagation th….

A good physiological experiment like a good physical one requires that it should present anywhere, at any time, under identical conditions, the same ….

The cooperation of the two retina in one field of vision, whatever is its cause, must rather be the source of all the ideas to which single or double….

Physiology is the science which treats of the properties of organic bodies, animal and vegetable, of the phenomena they present, and of the laws whic….

The sense organs experience the external light, sound, etc. with difficulty; the different sense organs only have a so-called specific receptivity fo….

Sensation is not the conduction of a quality or state of external bodies to consciousness, but the conduction of a quality or state of our nerves to ….

It is exceedingly improbable that the identical action of the corresponding parts of the two retina is the result of a certain habituation, or of the….

The essential attribute of a new sense is, not the perception of external objects or influences which ordinarily do not act upon the senses, but that….

The organizing principle, which according to an eternal law creates the different essential organs of the body, and animates them, is not itself seat….