Excitatory-inhibitory Balance
Excitatory-inhibitory Balance - Related Videos
01:29
Excitatory and Inhibitory Effects of Neurotransmitters
0 Views •
2023
When an action potential reaches the presynaptic axon terminal, it releases neurotransmitters from the neuron into the synaptic cleft at a chemical synapse. The released neurotransmitter can be excitatory or inhibitory. The critical criteria commonly used to determine whether a molecule is a neurotransmitter at a chemical synapse are the molecule's presence in the presynaptic neuron. Second, its release is in response to strong presynaptic depolarization. And lastly, the presence of specific...
04:37
A Technique to Assess the Inhibitory Effect of Toxin Exposure on Miniature Excitatory Postsynaptic Currents (mEPSCs)
0 Views •
2025
The video demonstrates the electrophysiological analysis of embryonic stem cell-derived neurons after exposure to neurotoxins. Treating these neurons with botulinum neurotoxins reduces the frequency of spontaneous miniature excitatory post-synaptic currents, confirming inhibition of synaptic transmission.
04:27
MicroRNA-Mediated Inhibition of Excitatory Postsynaptic Currents in Mouse Hippocampal Slices
0 Views •
2025
This video demonstrates microRNA-mediated inhibition of excitatory synaptic currents in mouse hippocampal brain slices. The CA3 neurons were infected with a recombinant viral vector harboring a construct for expressing a fluorescent reporter, a light-activated membrane channel, and a microRNA that downregulates the expression of voltage-gated calcium channels. Upon placing a slice in a recording chamber and patching a CA1 neuron with a recording pipette, light pulses were used to stimulate the...
09:50
Mapping Inhibitory Neuronal Circuits by Laser Scanning Photostimulation
0 Views •
Cited by 6 •
2011
This paper introduces an approach of combining laser scanning photostimulation with whole cell recordings in transgenic mice expressing GFP in limited inhibitory neuron populations. The technique allows for extensive mapping and quantitative analysis of local synaptic circuits of specific inhibitory cortical neurons.
06:21
Single-Cell Electroporation across Different Organotypic Slice Culture of Mouse Hippocampal Excitatory and Class-Specific Inhibitory Neurons
0 Views •
Cited by 2 •
2020
Presented here is a protocol for single-cell electroporation that can deliver genes in both excitatory and inhibitory neurons across a range of in vitro hippocampal slice culture ages. Our approach provides precise and efficient expression of genes in individual cells, which can be used to examine cell-autonomous and intercellular functions.
FAQs
The same amount of excitation can produce different outcomes depending on when and where inhibition arrives. Strong, well-timed inhibitory input may prevent firing, whereas excitation distributed across appropriate targets can promote coordinated activity. Consequently, researchers evaluate the timing, strength, and distribution of inputs rather than treating neural activity as a simple count of excitatory and inhibitory signals.
Glutamatergic and GABAergic inputs influence whether a target neuron reaches the activity level required to fire. Their relative effects determine how incoming information is integrated at the cellular and circuit levels. Examining this interaction helps explain why changes in either signaling influence network stability, sensory processing, and the way circuits respond to other inputs.
Excitatory-inhibitory balance is not fixed across the nervous system. Neuroscience research compares it among brain regions, developmental stages, and behavioral states because each context may alter how circuits process information. These comparisons can reveal whether a pattern reflects a general property of neural organization or a context-dependent adjustment linked to development, behavior, or regional function.
The balance provides a framework for studying synaptic plasticity, the capacity of neural connections to change. Plastic changes can modify how strongly excitatory and inhibitory inputs influence circuit activity, while the existing balance shapes how information is processed during those changes. Investigating both processes helps connect cellular alterations with broader changes in neural circuit function.
Studies of excitatory-inhibitory balance can clarify how neural circuits regulate responses to sensory information. Researchers examine whether the timing, strength, and distribution of opposing inputs support stable and appropriately selective activity. This work connects cellular signaling with circuit-level processing and helps identify how altered balance might change the handling of sensory information.
Disruptions in this balance can change circuit stability and information processing, making them relevant to neurological disease research. Epilepsy, neurodevelopmental disorders, and other neurological diseases are examined as contexts in which altered excitatory or inhibitory influences may contribute to abnormal circuit function. Comparing affected and typical states can help characterize disease-related changes in neural organization.