How does the baby of newborn period laugh occasionally to return a responsibility

Occasional laughter in newborns is a normal physiological phenomenon related to brain development, external stimuli and emotional responses. It is a way for them to interact with the outside world and express emotions. Occasional laughter in newborns is a normal physiological phenomenon, usually occurring during sleep or quiet. Here is a detailed analysis of this problem: 1. Neonatal brains are not fully developed, and their nervous systems are relatively immature. Occasionally laughing may be caused by activity in the subcortical centers responsible for controlling basic physiological functions such as breathing and heartbeat. When newborns are in a relaxed state, activity in these centers may lead to smiles or other expressions. 2. External stimuli may also trigger laughter in newborns. Soft light, warm touch, familiar sounds, or faces may trigger a happy response in newborns, leading to a smile. 3. Emotional responses in newborns may also be related to laughter. They may smile naturally because they feel comfortable, satisfied, or loved. This smile is a way for them to interact with the outside world and a way for them to express their emotions. It should be noted that each newborn's performance may vary, some may laugh more easily and some may laugh less. In addition, newborns' smiles are often unconscious and they don't really understand the meaning of smiles. Key message: Occasional laughter in newborns is a normal physiological phenomenon related to brain development, external stimuli and emotional responses. It is a way for them to interact with the outside world and express emotions.