GRIA1
GRIA1 AMPA receptor — the molecular target that 1 compounds in the wiki act on.
In one line: The brain's main "accelerator" receptor, tuned up gently by racetam nootropics.
GRIA1 is part of the AMPA receptor, which glutamate (the brain's main "go" signal) acts through to make neurons fire — the basis of alertness and learning. Racetam nootropics (like piracetam) gently tune up this receptor, which may sharpen memory and clarity.
Think of glutamate as the accelerator pedal; these compounds make the pedal a little more responsive. Pairing them with a choline source is standard, because pushing the accelerator harder also uses up more of the "focus" chemical acetylcholine.