reactivity has definitions from the fields of physiology,chemistry
1
[ noun ] (physiology) responsive to stimulation

Synonyms

responsiveness

Used in print

(E. Gellhorn, "Prolegomena to a theory of the emotions"...)

It seems to follow that by_and_large an antagonism exists between the paleo - and the neocortex as_far_as emotional reactivity is concerned , and that the balance between the two systems determines the emotional responsiveness of the organism .

Moreover , the dominance in parasympathetic action ( with reciprocal inhibition of the sympathetic ) at the hypothalamic level induces , by its peripheral action , the autonomic symptoms of sleep and , by its action on the cortex , a lessening in the reactivity of the sensory and motor apparatus of the somatic nervous_system .

Since electrical stimulation of the posterior hypothalamus produces the effects of wakefulness while stimulation of the anterior hypothalamus induces sleep , it may be said that the reactivity of the whole organism is altered by a change in the autonomic reactivity of the hypothalamus .

Since electrical stimulation of the posterior hypothalamus produces the effects of wakefulness while stimulation of the anterior hypothalamus induces sleep , it may be said that the reactivity of the whole organism is altered by a change in the autonomic reactivity of the hypothalamus .

This explains the beneficial effect of electroshock_therapy in certain depressions and a shift in the reaction from hypo - to normal reactivity of the sympathetic system as shown by the Mecholyl_test .

Related terms

sensitivity excitability

2
[ noun ] (chemistry) ready susceptibility to chemical change

Used in print

(Jay C. Harris and John R. Van Wazer, "Detergent...)

Even here there is room for some variation , for metal surfaces vary in smoothness , absorptive capacity , and chemical reactivity .

Related terms

susceptibility

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