There is an over-excitability of the nerves in place of sluggishness, and an over-reactivity of the whole organism to its environment.
"The Glands Regulating Personality"
Louis Berman, M.D.
And like its variations, variations of their tone, development, reactivity, fatigability, and endurance may be traced to corresponding states of overaction, or underaction, and odd combinations of the different hormones.
"The Glands Regulating Personality"
Louis Berman, M.D.
To Bloom: the problems of irritability, tumescence, rigidity, reactivity, dimension, sanitariness, pilosity.
"Ulysses"
James Joyce