isbelievedthat stimuliormsults during criticalorsensitiveperiods inearlylifecanhave lifetimeconsequences. Thisconceptiswellestablished in developmental biology and has been termed "programming". The evidence for programming confirmed the critical period for imprinting in animals, more so in birds'. Programming stimuli may be generated endogenously, such as hormonal signals', or they may be environmental. | A Perinatal Strategy For Preventing Adult Disease by Undurti N. Das, Paperback | Indigo Chapters