This book presents a distillation of many years of investigation by the
author and his associates on the problem of sensory reception. Both our
own data and data from the scientific literature on the electron
microscopy, cytochemistry, biochemistry and electrophysiology of the
organs of vision, taste, smell, hearing and gravitation, are presented
to show that the evolution of the sense organs of all animals on our
planet is based on a receptor cell equipped with a motile antenna, a
biological recorder of information concerning certain types of energy
reaching the animal from the environment. The conversion or encoding of
this energy into information is effected with the aid of special protein
molecules positioned in the plasma membrane of the antennae. The action
of the unit of energy of a stimulus on such a specific protein molecule
causes a change of shape, and this is the basis of the trigger mechanism
of reception, leading to the stimulation of the receptor cell and the
transmission of the information encoded in this cell in the form of
nerve impulses to the central nervous system. The present monograph
summarizes over 30 years of working experience by the author and his
associates in the field of evolution of sense organs. Material is used
here from his earlier monographs: The Retina of the Eye Vertebrates,
1947, The Morphology of the Organ of Smell, 1957, The Organ of Corti:
Its Histophy- siology and Histochemistry, 1964, written jointly with L.
K.