Environmental stimulation reduces learning deficits in experimental cretinism.


Behavioral deficits in adult rats exposed perinatally to thiouracil were substantially reduced or elimated by a 5-week period of "superenriched" postweaning rearing conditions before testing. This treatment resulted in remediation of hypothyroid rats' deficits in maze learning, maze retention, and resistance to extinction of bar-pressing; the facilitative… (More)


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