ABSTRACT
In the foregoing preliminary chapter we have learnt to know the nature of original sensations, their course in synchronous and acoluthic phases, and their mutual relations. We saw them enter on their synchronous phase and rapidly attain the temporary maximum of intensity, and then, entering on their acoluthic phase, die away with a less rapid diminution of intensity than the first sudden decrease in it would suggest, and indeed, than one would suppose without close investigation. We distinguished two secondary phases in this acoluthic dying down: one very brief, in which the expiring sensation is still directly manifest in consciousness; the other much slower, during which intensity is so diminished as to require particularly favourable conditions before the dying acoluthic sensation can still be recognized in consciousness.
