The brain of a baby develops gradually and follows an organized, hierarchical process where different areas mature at different times. The human brain is a highly interconnected network in which neurons communicate with each other to enable various cognitive, emotional, and physical functions. From birth, brain development follows an ascending pattern, moving from the more primitive structures to the more complex ones.
Reptilian brain or brainstem: At birth, the most basic part of the brain, known as the “reptilian brain,” located in the brainstem, is the most developed. This system controls essential automatic functions for survival, such as breathing, heart rate, body temperature regulation, and primitive reflexes (such as sucking). Its role is to ensure the baby’s body can survive and remain stable in its environment.
Limbic system: As the baby grows, the limbic system, which is responsible for managing emotions, memory, and affective responses, begins to develop. The limbic system includes key structures like the amygdala and hippocampus, which are responsible for emotional regulation and memory formation. From the first months of life, the baby begins to experience and express emotions, such as pleasure, frustration, and fear, although their ability to manage these emotions is limited due to the immaturity of other brain areas.
Sensorimotor cortex: At the same time, the sensorimotor cortex, which processes sensory information and controls movement, starts to mature. This area allows the baby to develop basic motor skills, such as controlling their limbs, visually tracking objects, and responding to tactile stimuli. During this stage, the baby’s brain is particularly receptive to sensory and motor experiences, so it’s crucial to provide a rich environment that allows exploration through movement, touch, sight, sound, and smell.
Prefrontal cortex: Finally, the prefrontal cortex, which is the most complex brain region, is the last to develop and continues maturing throughout childhood, adolescence, and even into early adulthood. This area is responsible for higher cognitive functions such as impulse control, long-term planning, decision-making, emotional self-regulation, and abstract thinking. The prefrontal cortex allows humans to manage emotions, anticipate consequences, and act rationally.
IMPLICATIONS FOR PARENTING: During the first years of life, the baby’s brain is in a critical stage of development, so it’s essential to provide an environment that fosters both emotional and physical growth. Since the limbic system and sensorimotor cortex develop first, it’s important to provide emotional support to the baby, helping them understand and regulate their emotions through sensitive and nurturing parenting. Babies need caregivers to recognize and respond to their emotional cues in an appropriate way, which helps form healthy neural connections in the limbic system.
At the same time, since the sensorimotor cortex matures early, it’s essential to allow children freedom of movement and access to a variety of sensory stimuli. This not only supports motor development but also stimulates the neural connections that are crucial for learning. Sensory explorations, such as touching different textures, moving freely, and hearing various sounds, help strengthen the neural pathways that will support future learning.
Providing the right environment for brain development during the first years of life is essential. By respecting the natural rhythm of brain maturation and offering an environment rich in emotional and sensory experiences, we help the child’s brain develop optimally, allowing them to reach their full cognitive, emotional, and physical potential throughout life.
