Changes in the electrical pattern of the brain indicate that the stimulus is getting through to the infant's central nervous system and eliciting some form of response.
脑电模式的变化表明，刺激正通过婴儿的中枢神经系统，并引发某种反应形式。
2
In such cases the chain of steps is referred to as a "signaling cascade" and often results in a small stimuluseliciting a large response.