Related Experiment Video
Updated: Mar 8, 2026

05:01
Inducing Long-Term Plasticity of Intrinsic Neuronal Excitability in Neurons of the Dorsal Lateral Geniculate Nucleus
Published on: September 20, 2024
841
The dialectic of Hebb and homeostasis
1Department of Biology, Brandeis University, Waltham, MA 02493, USA turrigiano@brandeis.edu.
Summary
Homeostatic and Hebbian plasticity refine neural circuits, but how they interact is unclear. Research is exploring their scales, control, and segregation to prevent interference in neural networks.
Area of Science:
- Neuroscience
- Cellular and Molecular Neuroscience
- Systems Neuroscience
Background:
- Homeostatic and Hebbian plasticity are crucial for neural circuit refinement.
- The interplay between these distinct plasticity mechanisms is not fully understood.
- Existing knowledge on their complementary and interfering roles is rudimentary.
Purpose of the Study:
- To review recent advancements in understanding Hebbian and homeostatic plasticity.
- To identify key challenges and unresolved questions in the field.
- To elucidate the integration of Hebbian and homeostatic plasticity mechanisms.
Main Methods:
- Literature review of recent progress in plasticity research.
- Analysis of spatial and temporal scales of plasticity mechanisms.
- Investigation into the control of network function by homeostatic plasticity.
Main Results:
- Progress has been made in understanding the integration of plasticity mechanisms.
- Significant puzzles remain regarding the scales and control of plasticity.
- The necessity of segregating plasticity mechanisms to prevent interference is highlighted.
Conclusions:
- Further research is needed to fully unravel the complex interactions between Hebbian and homeostatic plasticity.
- Understanding the precise scales, control, and segregation is critical for neural circuit function.
- This work contributes to the themed issue on integrating Hebbian and homeostatic plasticity.
Related Concept Videos
Neuroplasticity
2.2K
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.
2.2K
Homeostatic Imbalance
41.3K
Homeostasis is the maintenance of a stable internal environment within the body, which is crucial for the proper functioning of cells, tissues, organs, and organ systems. The body has various control mechanisms that work together to regulate various physiological parameters such as temperature, blood pressure, pH balance, and fluid balance, to name a few. These control mechanisms are based on feedback loops that can be either positive or negative.
However, sometimes these feedback loops fail,...
However, sometimes these feedback loops fail,...
41.3K
Positive and Negative Feedback Loops
25.9K
Animal organs and organ systems constantly adjust to internal and external changes through a process called homeostasis ("steady state"). Examples of these changes include regulation of the level of glucose or calcium in the blood or internal responses to external temperatures. Homeostasis requires maintaining an internal dynamic equilibrium:
25.9K
Long-term Potentiation
3.8K
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...
Hebbian LTP
LTP can occur when...
3.8K
Long-term Potentiation
59.1K
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.
59.1K
Plasticity
3.2K
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...
3.2K

