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Neuroplasticity Concepts

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Cortical Re-mapping

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Cortical Re-mapping involves the reorganization of the cortical maps in the brain, which can occur in response to injury, disease, or as a result of learning new skills. Example: After a person loses a limb, the area of the brain that controlled that limb's movement may be reassigned to control other body parts.

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Brain-Derived Neurotrophic Factor (BDNF)

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BDNF is a protein that supports the survival of existing neurons and encourages the growth and differentiation of new neurons and synapses. Example: Exercise increases the levels of BDNF, which can positively influence brain function.

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Cross-Modal Plasticity

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Cross-Modal Plasticity is the reassignment of a function from a damaged sense to another sense. This allows the brain to compensate for impairment or loss of a sensory modality. Example: In blind individuals, parts of the brain that would normally process visual information can repurpose to enhance auditory processing.

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Experience-Dependent Plasticity

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Experience-Dependent Plasticity is the continuing process by which the neural connections are created and reorganized throughout life due to environmental interactions. Example: Learning a new language can lead to changes in the areas of the brain associated with linguistic processing.

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Synaptic Plasticity

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Synaptic Plasticity refers to the ability of synapses to strengthen or weaken over time in response to increases or decreases in their activity. Example: Long-term potentiation, where sustained stimulation of neurons leads to an increased synaptic strength.

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Neurogenesis

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Neurogenesis is the process of new neuron formation in the brain, which can occur in the adult brain and contribute to plasticity. Example: The hippocampus is known to generate new neurons throughout life which can play a role in learning and memory.

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Long-Term Potentiation (LTP)

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LTP is a long-lasting enhancement in signal transmission between two neurons that results from stimulating them synchronously. LTP is one of the primary cellular mechanisms behind learning and memory. Example: Memorizing information for an exam can induce LTP in relevant brain areas, reinforcing the memory trace.

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Long-Term Depression (LTD)

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LTD is the opposite of LTP, it is a long-lasting decrease in synaptic strength. It is believed to play a role in the removal of old memories and can have a role in motor learning. Example: LTD can be observed in the cerebellum during motor learning as some synaptic responses are diminished and refined.

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Use-Dependent Plasticity

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Use-Dependent Plasticity is a form of neuroplasticity that states that the more a particular brain function is used, the more it will strengthen and become more efficient. Example: Musicians often have more developed areas of the brain related to their instrument playing due to extensive practice.

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Hebbian Learning

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Hebbian Learning is a theory that proposes the mechanism of synaptic plasticity whereby an increase in synaptic efficacy arises from the presynaptic cell's repeated and persistent stimulation of the postsynaptic cell. Example: Learning a new skill, like playing the piano, strengthens the synapses involved in that task.

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