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Related Concept Videos

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.
Altered States of Awareness01:06

Altered States of Awareness

Altered states of consciousness represent significant deviations from one's normal mental state. These deviations can range from subtle changes in awareness to profound transformations in perception, thought processes, and sensory experiences. Altered states of consciousness can be triggered by various factors, including drug use, meditation, hypnosis, illness, or even intense fatigue.
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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...
Gut-Brain Axis01:22

Gut-Brain Axis

The gut–brain axis is a bidirectional communication system that connects the gastrointestinal tract and the brain. This interaction is mediated through multiple pathways, including the vagus nerve, hormonal signals, immune responses, and chemical messengers produced by gut microbes.Microbial Contributions to Brain FunctionGut microbiota contributes significantly to brain function by producing neuroactive compounds. These include neuroactive compounds that influence neurotransmitters such as...
Long-term Depression01:03

Long-term Depression

Long-term depression, or LTD, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTD is the process of synaptic weakening that occurs over time between pre and postsynaptic neuronal connections. The synaptic weakening of LTD works in opposition to synaptic strengthening by long-term potentiation (LTP) and together are the main mechanisms that underlie learning and memory.
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Long-term Depression01:05

Long-term Depression

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

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Whole-cell Patch-clamp Recordings in Brain Slices
07:23

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Published on: June 15, 2016

Stress- and allostasis-induced brain plasticity.

Bruce S McEwen1, Peter J Gianaros

  • 1Harold and Margaret Milliken Hatch Laboratory of Neuroendocrinology, The Rockefeller University, New York, New York 10065, USA. mcewen@mail.rockefeller.edu

Annual Review of Medicine
|August 17, 2010
PubMed
Summary

The brain orchestrates stress responses and adapts through neural plasticity. Chronic stress can lead to maladaptive changes, impacting mental and physical health, but interventions targeting brain mechanisms offer potential treatments.

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Area of Science:

  • Neuroscience
  • Psychobiology
  • Stress Research

Background:

  • The brain is central to processing and responding to stress.
  • Stressful experiences induce functional and structural brain changes.
  • Neural circuitry manages behavioral and physiological stress responses.

Purpose of the Study:

  • To review the role of brain plasticity in stress adaptation and pathophysiology.
  • To explore how allostasis and allostatic load influence health conditions.
  • To examine interventions targeting brain mechanisms for stress-related disorders.

Main Methods:

  • Literature review focusing on brain plasticity and stress.
  • Analysis of allodynamic processes and their impact on health.
  • Synthesis of research on interventions for stress-related conditions.

Main Results:

  • Brain plasticity is crucial for adapting to and developing pathophysiology from stress.
  • Allostasis (short-term adaptation) and allostatic load (long-term burden) involve bidirectional brain-body signaling.
  • These processes influence vulnerability to mental and physical health conditions.

Conclusions:

  • Brain plasticity underlies both adaptive and maladaptive responses to stress.
  • Understanding allodynamic mechanisms is key to addressing stress-related health issues.
  • Interventions targeting brain plasticity can prevent and treat prevalent health conditions.