Neurogenesis

Google AI Overiew, "Neurogenesis (new neuron formation) and synaptic plasticity (modification of neural connections) are key components of neuroplasticity, allowing the brain to adapt, learn, and form memories. Neurogenesis introduces new neurons, while synaptic plasticity, involving long-term potentiation (LTP) and depression (LTD), adjusts the strength of synapses (junctions) between neurons to optimize communication.

PNAS

Key Concepts

Neurogenesis: The process of producing new neurons, which occurs in specific adult brain regions like the hippocampus, providing a pool of new cells that integrate into functional circuits.

Synapses: Specialized junctions where neurons communicate via electrochemical signals.

Synaptic Plasticity: The ability of synapses to strengthen or weaken over time in response to activity, crucial for learning and memory formation.

ScienceDirect.com

Interaction of Neurogenesis and Synaptic Plasticity

Integration of New Neurons: New neurons born through adult neurogenesis develop their own synapses, integrating into existing neural networks.

Enhanced Plasticity: New neurons exhibit a "critical period" of enhanced plasticity, meaning they are more flexible and able to strengthen connections compared to older neurons.

Functional Impact: Adult neurogenesis and synaptic plasticity work together, particularly in the hippocampus, to facilitate learning, memory, and cognitive flexibility.

Regulatory Factors: Chronic stress and aging generally inhibit both neurogenesis and synaptic plasticity, whereas learning and an enriched environment can promote them.

PNAS

Key Mechanisms

Long-Term Potentiation (LTP): The persistent strengthening of synapses based on recent patterns of activity, considered a mechanism for memory.

Long-Term Depression (LTD): The reduction in synaptic strength, which helps refine network connectivity and balance synaptic weight.

Structural Plasticity: The actual formation of new synapses (synaptogenesis) or changes in dendritic spines.

ScienceDirect.com

Research shows that adult neurogenesis is vital for maintaining high levels of synaptic plasticity in specific brain regions, aiding in the continuous adaptation of the brain to new information.

eNeuro

The neuroplastic brain: current breakthroughs and emerging frontiers

Jul 1, 2025 — Synaptic plasticity refers to the modulation of synaptic strength, primarily through LTP and long-term depression (LTD) (Bliss and Cooke, 2011). LTP, widely reg...

ScienceDirect.com

Age-Related Changes in Synaptic Plasticity Associated with Mossy ...

Apr 24, 2020 — Certain discrete regions of the adult brain retain the capacity for continued neurogenesis throughout life. This unique form of neurodevelopment allows those ar...

eNeuro

Conditional reduction of adult neurogenesis impairs bidirectional ...

Apr 4, 2011 — Whereas the deficits in synaptic transmission and plasticity are completely rescued by restoring neurogenesis, these synapses regain their ability to express LT...

PNAS

Dynamic learning and memory, synaptic plasticity and neurogenesis

Apr 1, 2014 — The rationale for selecting these subtopics settles on prevailing view on synaptic plasticity processes as a “hotspot” of current research into basic mechanisms...

National Institutes of Health (NIH) | (.gov)

A critical period for enhanced synaptic plasticity in newly generated ...

Using retrovirus mediated birth-dating and labeling, we examined the temporal regulation and underlying mechanism of synaptic plasticity of adult-born DGCs alon...

National Institutes of Health (.gov)

Hallmarks of Brain Plasticity - PMC

2. Introduction * 2.1. Concept of Brain Plasticity. Neuroplasticity is the ability of the brain to change structurally and functionally [24]. Experience may pro...

National Institutes of Health (.gov)

Your Magnificent Plastic Brain

YouTube·BrainFacts.org

Exploring the Role of Neuroplasticity in Development, Aging, and ... - MDPI

Nov 21, 2023 — Abstract. Neuroplasticity refers to the ability of the brain to reorganize and modify its neural connections in response to environmental stimuli, experience, l...

MDPI

NEUROPLASTICITY and NEUROGENESIS Explained

YouTube·Rakesh Jain, MD, MPH

This is for informational purposes only. For medical advice or diagnosis, consult a professional. AI responses may include mistakes. Learn more

Myelination is a multistep developmental process wherein glial cells form insulating sheaths around axons to accelerate nerve impulses. Key phases include OPC proliferation/migration, differentiation into pre-myelinating cells, wrapping of axon membranes, and final compaction. Myelination begins during gestation, peaking in infancy and continuing into adulthood."

Neurogenesis

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