P—postnatal age in days; Ad—adults, more than 6-month-old; jj—hyperbilirubinemic Gunn rats; Ctrls—normobilirubinemic age-matched Gunn rats; f-Ctx—frontal cortex; h-Ctx—parietal cortex; IC—Inferior colliculi; Hip—hippocampus; PCs—pyramidal cells; DG—Dentate gyrus; CA—Cornus of ...