hypochromatism

-- Our experiments have shown that the brain-cell changes due to fear may be divided into two stages: First, that of hyperchromatism -- stimulation; second, that of hypochromatism -- exhaustion (Figs. 5 and 13).

The Origin and Nature of the Emotions: Miscellaneous Papers 1915

[a] Note the general hypochromatism and the diffusion of stain.

The Origin and Nature of the Emotions: Miscellaneous Papers 1915