Pharmacological Stimulation
Pharmacological Stimulation - Related Videos
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.
12:37
Pharmacologic Induction of Epidermal Melanin and Protection Against Sunburn in a Humanized Mouse Model
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Cited by 13 •
2013
Epidermal melanin is induced by topical application of forskolin in a murine model of the fair-skinned UV-sensitive human. Pharmacologic manipulation of cAMP levels in the skin and epidermal darkening strongly protect against UV-mediated inflammation (sunburn) as measured by the minimum erythematous dose (MED) assay.
09:58
Pharmacological and Functional Genetic Assays to Manipulate Regeneration of the Planarian Dugesia japonica
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Cited by 17 •
2011
An attractive model for studying stem cell differentiation within a live animal is the planarian flatworm. Regeneration is studied by simple amputation experiments that are easily performed in a basic laboratory and are amenable to pharmacological and genetic (in vivo RNAi) manipulation as detailed by protocols in this article.
08:49
Assessing Changes in Volatile General Anesthetic Sensitivity of Mice after Local or Systemic Pharmacological Intervention
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Cited by 23 •
2013
Loss of the righting reflex has long served as a standard behavioral surrogate for unconsciousness, also called hypnosis, in laboratory animals. Alterations in volatile anesthetic sensitivity caused by pharmacological interventions can be detected with a carefully controlled high-throughput assessment system, which may be adapted for delivery of any inhaled therapeutic.
02:40
Effect of an Immunomodulatory Pharmacological Agent on the Interaction Between Dendritic Cells and CD4+ T Cells
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2025
This video demonstrates a method of converting dendritic cells (DCs) to tolerogenic DCs (TolDCs) using an immunomodulatory pharmacological agent. This conversion is confirmed by evaluating the TolDC function through their immunosuppressive effect on CD4+ T cells.
FAQs
Agonists and modulators can produce different experimental effects because their receptor interactions do not necessarily alter neural activity in the same way. After binding, they may change ion-channel activity or intracellular signaling, with downstream effects that increase or decrease neuronal excitability or synaptic transmission. Comparing these effects helps connect receptor-level actions with circuit function.
Receptor binding matters because it provides a molecular link between a chemical agent and measurable nervous-system activity. Changes in ion-channel activity can alter neuronal excitability, while changes in intracellular signaling can influence how cells respond within a circuit. This chain of effects allows researchers to interpret network activity or behavior in relation to specific receptor-level mechanisms.
Pharmacological stimulation can be examined at several levels, from individual cells and tissues to neural circuits and behavior. An effect observed in one cell may be related to altered synaptic transmission, whereas circuit-level changes may help explain behavioral outcomes. Considering these levels together helps researchers relate molecular responses to broader patterns of nervous-system function.
An investigation typically begins by selecting a drug or chemical agent relevant to the receptor or neurotransmitter system under study. Researchers then examine resulting changes in neuronal excitability, synaptic transmission, network activity, or behavior, depending on the question. Relating these observations across levels helps determine how receptor engagement contributes to nervous-system function.
When the goal is to map circuit function, researchers can use chemically induced changes in neural activity as functional probes. An observed increase or decrease in activity indicates how the targeted receptor-related process influences the circuit under investigation. This approach connects molecular actions involving specific receptors with broader patterns of network operation.
Applications extend from studying neurotransmitter systems to modeling neurological and psychiatric conditions. In treatment-oriented research, receptor-level and circuit-level relationships can support evaluation of potential therapies. The important outcome is not simply whether activity changes, but whether the change clarifies disease-related mechanisms or reveals a plausible route for modifying nervous-system function.