underactivation

From under- + activation.

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underactivation (countable and uncountable, plural underactivations)

1. inadequate activation
   • 2015 July 30, “Altered Brain Activation during Emotional Face Processing in Relation to Both Diagnosis and Polygenic Risk of Bipolar Disorder”, in PLOS ONE‎^[1], →DOI:

     A recent quantitative meta-analysis combining results from 65 fMRI studies (N = 1040 BD cases and 1074 healthy controls) found underactivation in the inferior frontal cortex and overactivation in limbic areas in BD patients relative to controls across emotional paradigms.