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Related Concept Videos

Long-term Potentiation01:25

Long-term Potentiation

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.
Hebbian LTP
LTP can occur when presynaptic neurons...
Long-term Potentiation01:35

Long-term Potentiation

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.
Neuroplasticity01:01

Neuroplasticity

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.
Hierarchy of Motor Control01:18

Hierarchy of Motor Control

The hierarchy of motor control refers to the different levels of organization and processing involved in controlling movement in the body. These levels range from higher cortical areas involved in planning and decision-making to lower spinal cord reflexes that respond automatically to external stimuli.
Ligand-Gated Ion Channel Receptor: Gating Mechanism01:30

Ligand-Gated Ion Channel Receptor: Gating Mechanism

Ligand-gated ion channels are transmembrane proteins that play a vital role in intercellular communication and functions of the nervous system. They allow the influx of ions across the membrane once the neurotransmitter binds, allowing the subsequent transmission of electrical excitation across the neurons. Other ligand-gated ion channels, like the γ-aminobutyric acid (GABA) receptor, permit anions like chloride into the cells on the binding of the GABA molecule. Their entry into the cell...
Plasticity00:58

Plasticity

Plasticity is the property where an object loses its elasticity and undergoes irreversible deformation, even after the deformation forces are eliminated. If a material deforms irreversibly without increasing stress or load, then this is called ideal plasticity. For example, when a force is applied to an aluminum rod, it changes its shape, but it does not return to its original shape once the force is removed. Plastic deformation or ductility is thus a permanent deformation or change in the...

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Slice Patch Clamp Technique for Analyzing Learning-Induced Plasticity
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Modifying motor learning through gating and homeostatic metaplasticity.

Ulf Ziemann1, Hartwig R Siebner

  • 1Department of Neurology, Johann Wolfgang Goethe-University, Frankfurt am Main, Germany. u.ziemann@em.uni-frankfurt.de

Brain Stimulation
|July 17, 2010
PubMed
Summary

Enhance motor learning by using brain stimulation to temporarily boost motor cortex excitability or lower neuronal activity. These methods leverage gating and homeostatic metaplasticity for improved motor skill acquisition in healthy individuals and stroke patients.

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Area of Science:

  • Neuroscience
  • Motor Control
  • Rehabilitation

Background:

  • Synaptic plasticity in the motor cortex is crucial for motor learning.
  • Practice-dependent plasticity can be experimentally enhanced.
  • Motor cortex excitability influences motor learning effectiveness.

Purpose of the Study:

  • To explore how transcranial brain stimulation can enhance motor learning.
  • To investigate the roles of 'gating' and 'homeostatic metaplasticity' in motor learning.
  • To apply these principles to improve motor function in healthy subjects and post-stroke patients.

Main Methods:

  • Utilizing transcranial brain stimulation techniques.
  • Implementing 'gating' by weakening intracortical inhibition during practice.
  • Employing homeostatic metaplasticity by reducing motor cortex neuronal activity before practice.

Main Results:

  • Transiently increasing motor cortex excitability enhances motor learning.
  • Lowering neuronal activity before practice decreases the threshold for synaptic plasticity.
  • Both strategies show potential for improving motor skill acquisition.

Conclusions:

  • Transcranial brain stimulation offers a method to enhance motor learning.
  • Gating and homeostatic metaplasticity are key mechanisms for boosting motor skill acquisition.
  • These approaches have implications for neurorehabilitation, particularly for stroke recovery.