Dictionary

underactivate en · VERB

Pronunciation

• (US) audio

Etymology

Etymology tree Proto-Indo-European *h₁én Proto-Indo-European *-tér Proto-Indo-European *h₁entér Proto-Indo-European *h₂én Proto-Indo-European *dʰeh₁-? Proto-Indo-European *-dʰi ? Proto-Indo-European *(H)n̥dʰí Proto-Indo-European *-ér Proto-Indo-European *(H)n̥dʰér Proto-Germanic *under Proto-West Germanic *undar Old English under- Middle English under- English under- Proto-Indo-European *h₂eǵ- Proto-Indo-European *-eti Proto-Indo-European *h₂éǵeti Proto-Italic *agō Latin agō Proto-Indo-European *-wós Proto-Indo-European *-iHwósder. Latin -īvus ▲ Ancient Greek ἐνεργητῐκός (energētĭkós)sl. Latin āctīvusbor. Old French actifbor. Middle English actyf English active Proto-Indo-European *-h₂ Proto-Indo-European *-éh₂ Proto-Indo-European *-tós Proto-Indo-European *-eh₂tos Proto-Italic *-ātos Latin -ātuslbor. English -ate English activate English underactivate From under- + activate.

Meanings

1. To produce insufficient levels of activation.
   • Wood and Flowers (1999) demonstrated with Positron Emission Tomography (PET) that the same brain regions that underactivate in dyslexia also underactivate in the inattentive subtype of attention deficit hyperactivity disorder. 2001 -, Que Ida, Annals of Dyslexia 2001, →ISBN, page 37:
   • In contrast, struggling readers underactivate the reading systems in the back of the brain and overactivate the system in the front of the brain. 2014, Patrick R. Riccards, Phyllis Blaunstein, Reid Lyon, Why Kids Can't Read: Continuing to Challenge the Status Quo in Education, →ISBN:
   • An important discovery over the last ten years comes from studies that parametrically varied working memory load to establish that, compared to younger adults, older adults tend to overactivate PFC regions at lower loads, and to underactivate at higher loads, where performance also drops off. 2016, Roberto Cabeza, Lars Nyberg, Denise C. Park, Cognitive Neuroscience of Aging: Linking Cognitive and Cerebral Aging, →ISBN:

Forms