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Period: to
Brain Development
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Embryonic Period
The major structural features of the brain begin to take shape during this embryonic period. -
2 Weeks Post-Conception
The neural tube begins to form and take shape 2 weeks after conception. -
5 Weeks Post-Conception
The neural tube begins to evolve into the basic brain and the spinal cord. -
7 Weeks Post-Conception
The neurons and synapses begin to develop, and connections are set off in the brain. -
Months after conception
Myelin appears on the axons of some neurons. This process is called "myelination," and this increases the infants awareness when it comes to complex tasks. The cerebral cortex also begins to appear. -
Before Birth
Before the baby is born, the brain's size physically grows to around 25% of that of an adult brain -
Weeks Post-Birth
A few weeks post-birth, the baby's cerebellum triples in size from its embryonic state. -
1 Month Post-Birth
Around this time, the visual areas of the cortex experience rapid growth. As a result of this, the babies vision becomes fuller, and not blurred. -
3 Months Old
When the baby is 3 months old, the hippocampus, similar to the visual areas of the cortex, grows rapidly. With this growth, the babies experience better recognition of events. -
8 Months After Birth
The frontal lobe's development continues. The lobe develops to the point where languages can be distinguished when heard. -
Over A Year Old
The function of language is promoted. Some time after turning a year old, the synapses of the brain become more interconnected, and language becomes more coherent to the baby. -
16 Months Old
The neurons are connecting and developing synapses at a higher rate. At this point, each neuron has developed around 15,000 synapses. -
20 Months Old
At this point, the baby's brain undergoes a great deal of myelination. This is the process of the myelin appearing on the axons of neurons. This process promotes the function of understanding complex ideas and problem solving -
2 Years Old
The baby's brain has undergone many changes in the neurons and physical shape. At this time, the baby's brain has grown to approximately 50% the size of an adult's brain. -
2 Years Old
Additionally, this period is when the baby has twice as many synapses in their brain than adults. The loss of synapses happens in succession to the peak number of synapses. -
Sources
http://www.urbanchildinstitute.org/why-0-3/baby-and-brain#:~:text=At%20birth%2C%20it%20already%20has,percent%20of%20its%20adult%20volume.&text=Even%20more%20importantly%2C%20synapses%20are,than%20at%20any%20other%20time. https://coverthree.com/blogs/research/kids-brain-development https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3722610/