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Related Concept Videos

Neuroplasticity01:01

Neuroplasticity

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Neuroplasticity reflects the brain's remarkable capacity to adapt and evolve, responding dynamically to learning, experiences, or injury by reorganizing its neural circuitry. This reorganization involves creating new neural connections and refining old ones through a series of biological processes that contribute to the brain's lifelong development and adaptability.
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Multiple Sclerosis l: Introduction01:19

Multiple Sclerosis l: Introduction

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Multiple sclerosis is a chronic autoimmune disease of the central nervous system (CNS) that affects the brain, spinal cord, and optic nerves. It is an inflammatory demyelinating disorder and a leading cause of neurological disability in young adults.EpidemiologyMS commonly begins between 20 and 40 years of age and is twice as common in women. Its exact cause remains unclear, but genetic susceptibility contributes, with higher risk in first-degree relatives and identical twins. A greater...
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Long-term Potentiation01:25

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Long-term potentiation, or LTP, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTP is the process of synaptic strengthening that occurs over time between pre and postsynaptic neuronal connections. The synaptic strengthening of LTP works in opposition to the synaptic weakening of long-term depression (LTD) and together are the main mechanisms that underlie learning and memory.
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Long-term Potentiation01:35

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Long-term potentiation, or LTP, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTP is the process of synaptic strengthening that occurs over time between pre- and postsynaptic neuronal connections. The synaptic strengthening of LTP works in opposition to the synaptic weakening of long-term depression (LTD) and together are the main mechanisms that underlie learning and memory.
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Integration of Synaptic Events01:28

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Synaptic integration mainly includes the summation of graded potentials. Graded potentials, regardless of their type, cause subtle alterations in membrane voltage, resulting in either depolarization or hyperpolarization. These incremental changes, when combined or summed, can propel the neuron toward its threshold. Consider, for example, a membrane experiencing a +15 mV shift, causing it to depolarize from -70 mV to -55 mV. In this scenario, graded potentials govern the membrane's ability to...
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Chemical Synapses01:26

Chemical Synapses

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Chemical synapses are specialized sites between two neurons or between a neuron and a non-neuronal cell like a muscle, glandular or sensory cell.
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Comprehensive Autopsy Program for Individuals with Multiple Sclerosis
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Changes of synaptic plasticity in multiple sclerosis.

Ti-Fei Yuan, Chunlei Shan, Oscar Arias-Carrión

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    Summary
    This summary is machine-generated.

    Multiple sclerosis (MS) is linked to cognitive dysfunction due to changes in synaptic plasticity. These alterations in brain areas may explain the behavioral abnormalities seen in MS patients.

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    Area of Science:

    • Neuroscience
    • Neuroimmunology
    • Cognitive Neurology

    Background:

    • Multiple sclerosis (MS) is a chronic neurological disease affecting the central nervous system.
    • Cognitive dysfunction is a common and debilitating symptom in MS patients.
    • The precise mechanisms underlying MS-related cognitive impairment remain incompletely understood.

    Purpose of the Study:

    • To investigate the role of synaptic transmission and plasticity in the cognitive deficits associated with multiple sclerosis.
    • To explore the neurobiological underpinnings of behavioral abnormalities in MS.

    Main Methods:

    • Review of recent findings on synaptic plasticity in MS.
    • Analysis of evidence from animal models of experimental autoimmune encephalomyelitis (EAE).
    • Examination of data from human MS patients.

    Main Results:

    • Evidence suggests heightened synaptic transmission and plasticity in various brain regions in MS.
    • Synaptic plasticity changes are demonstrably altered in both animal models and human MS patients.
    • These synaptic alterations are proposed as a contributing factor to cognitive dysfunction.

    Conclusions:

    • Synaptic plasticity alterations are implicated in the cognitive dysfunction observed in multiple sclerosis.
    • Understanding these mechanisms is crucial for developing targeted therapies for MS-related cognitive impairment.
    • Further research is warranted to fully elucidate the complex relationship between MS, synaptic changes, and cognitive function.