According to Center on the Developing Child, Harvard University:
“The most important influence on early brain development is the real-life back and forth (serve and return) interaction with caring adults. There are no credible scientific data to support the claim that specialized videos or particular music recordings have a measurable impact on developing brain architecture in the first 2 to 3 years of life. Although a varied array of experiences clearly stimulates learning in the preschool years and beyond, promotional statements about the superior brain-building impacts of expensive “educational” toys and videos for infants and toddlers have no scientific support.”