Nmda Stimulation
Nmda Stimulation - Related Videos
07:11
Examination of Anatomical Features of Retinal Ganglion Cells Under N-methyl-D-aspartic Acid (NMDA)-induced Excitotoxicity
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2025
Here, we describe the use of a genetically directed alkaline phosphatase (AP) labeling method to investigate the anatomical features and phenotypes of mouse retinas under NMDA-induced excitotoxicity. In conjunction with several retinal ganglion cell (RGC) subtype-specific reporter lines, we uncover novel phenotypes in dying RGCs throughout the degenerative process.
06:42
Application of a NMDA Receptor Conductance in Rat Midbrain Dopaminergic Neurons Using the Dynamic Clamp Technique
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Cited by 5 •
2010
In this video, we demonstrate how to apply a conductance into a dopaminergic neuron recorded in the whole cell configuration in rat brain slices. This technique is called the dynamic clamp.
11:02
Combining Transcranial Magnetic Stimulation and fMRI to Examine the Default Mode Network
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Cited by 17 •
2010
In this article, we examine the methodology and considerations relevant to the combination of TMS and fMRI to examine the effects of brain stimulation on the default network.
02:58
Generating Local Cornu Ammonis 1 (CA1) Gamma Oscillations Using Tetanic Stimulations in a Hippocampal Brain Slice
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2025
This video demonstrates the procedure of inducing local CA1 gamma oscillations in a CA1 hippocampal mouse brain slice using tetanic simulations. This method is important to understand the neuronal network activity.
01:30
Cognitive Enhancers: Cholinesterase Inhibitors and NMDA Receptor Antagonists
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2024
Cognitive enhancers, also known as "smart drugs," are substances used to enhance memory, mental alertness, and concentration. These can be natural or synthetic and improve cognition in conditions like Alzheimer's disease (AD) and other neurodegenerative diseases. Some common examples include caffeine, amphetamines, methylphenidate, modafinil, arecoline, donepezil, vortioxetine, and piracetam. These enhancers work on the principle of synaptic plasticity and altered circuit function. They...
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Membrane depolarization acts as the receptor’s crucial voltage gate. Even when glutamate and a co-agonist are present, the channel remains functionally restricted by magnesium until the membrane becomes sufficiently depolarized. Removing this block permits ion movement, especially calcium entry, so investigators can examine how electrical activity determines whether receptor activation produces downstream neuronal signaling.
After the voltage-dependent magnesium block is relieved, calcium and other cations enter the neuron through the receptor channel. Calcium is especially important because its entry initiates intracellular signaling rather than serving only as an electrical event. This connection allows experiments to relate receptor activation at the membrane to later changes associated with synaptic plasticity and neuronal function.
The magnesium block makes NMDA receptor activity dependent on both chemical binding and membrane voltage. This dual requirement distinguishes receptor activation from a simple ligand-triggered response and links synaptic activity to the neuron’s electrical state. Consequently, changes observed after stimulation can reflect the interaction between excitatory neurotransmission and depolarization, not binding alone.
The biological outcome depends on how receptor activation is controlled. Carefully regulated stimulation can reveal activity-dependent changes in synaptic or circuit function, whereas excessive activation is associated with excitotoxicity, a damaging process linked to neuronal injury. Comparing these outcomes helps neuroscience researchers investigate both normal plasticity and mechanisms relevant to neurological disease.
A basic experiment applies receptor activation in a controlled setting and then evaluates the resulting neuronal, synaptic, or circuit response. Researchers interpret the outcome in relation to the induced activity, asking whether it reveals intracellular signaling, altered synaptic function, or injury-related effects. This workflow connects a defined stimulation event with measurable neuroscience phenomena.
Investigators use NMDA stimulation to examine how receptor-linked calcium entry and intracellular signaling contribute to long-term potentiation, a persistent change in synaptic strength. The method provides an experimental way to connect excitatory receptor activity with synaptic plasticity. Findings from these studies help clarify cellular mechanisms underlying learning and memory without reducing those processes to receptor binding alone.
Beyond synaptic plasticity, NMDA stimulation supports research on neuronal development, learning and memory mechanisms, and excitotoxicity. Its value comes from showing how receptor-mediated activity affects neurons and circuits across different contexts. When activation becomes excessive, the same experimental framework can also help investigators study cellular injury associated with neurological disease.