Neuroplasticity
How the brain changes and adapts throughout life, and what this means for cognitive health.
Understanding Neuroplasticity
Neuroplasticity refers to the brain's remarkable ability to reorganize itself by forming new neural connections throughout life. This fundamental property allows the brain to adjust to new experiences, learn new information, and recover from injury.
Types of Neuroplasticity
Structural Plasticity
The brain can physically change its structure in response to experience. This includes:
- Synaptogenesis: Formation of new synapses between neurons
- Neurogenesis: Birth of new neurons, particularly in the hippocampus
- Dendritic remodeling: Changes in the branching patterns of neurons
Functional Plasticity
The brain can shift functions from damaged areas to undamaged ones, and strengthen or weaken neural pathways based on use.
Factors That Enhance Neuroplasticity
Research has identified several factors that promote beneficial brain plasticity:
Exercise
Physical activity is one of the most powerful promoters of neuroplasticity. It increases levels of brain-derived neurotrophic factor (BDNF), which supports neuron survival and growth. [24018144]
Novel Learning
Engaging in new and challenging mental activities creates new neural pathways and strengthens existing connections.
Sleep
During sleep, the brain consolidates memories and performs maintenance functions that support plasticity.
Implications for Brain Health
Understanding neuroplasticity offers hope for maintaining cognitive function throughout life. The brain is not fixed—it can be shaped by our choices and behaviors.
References
- [PMID: 24018144]Voss MW, et al.. Bridging animal and human models of exercise-induced brain plasticity. Trends in Cognitive Sciences (2013). PubMed
- [PMID: 22406747]Zatorre RJ, Fields RD, Bhag-Johansen H. Plasticity in gray and white: neuroimaging changes in brain structure during learning. Nature Neuroscience (2012). PubMed