Neurochemical Injection
Neurochemical Injection - Related Videos
07:04
Physiological, Morphological and Neurochemical Characterization of Neurons Modulated by Movement
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2011
A technique is described to quantify the in vivo physiological response of mammalian neurons during movement and correlate the physiology of the neuron with neuronal morphology, neurochemical phenotype and synaptic microcircuitry.
01:26
Neurochemical Transmission: Sites of Drug Action
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2023
Neurochemical transmission, the conduction of electrical impulses between neurons mediated by neurotransmitters, plays a vital role in various physiological processes. Autonomic drugs exert their effects by modulating neurotransmission within the autonomic nervous system. For instance, drugs such as hemicholinium block the precursor uptake necessary for synthesizing acetylcholine, an essential autonomic neurotransmitter. Following synthesis, neurotransmitters are stored in vesicles. Metyrosine...
08:54
Immunostaining of Biocytin-filled and Processed Sections for Neurochemical Markers
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Cited by 28 •
2016
This protocol presents a method for the morphological recovery of neurons patched during electrophysiological recordings using biocytin filling and subsequent immunohistochemical postprocessing. We show that thick biocytin-filled sections that were stained and coverslipped can be restained with a second primary antibody days or months later.
14:37
Whole-cell Patch-clamp Recordings from Morphologically- and Neurochemically-identified Hippocampal Interneurons
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Cited by 39 •
2014
Cortical networks are controlled by a small, but diverse set of inhibitory interneurons. Functional investigation of interneurons therefore requires targeted recording and rigorous identification. Described here is a combined approach involving whole-cell recordings from single or synaptically-coupled pairs of neurons with intracellular labeling, post-hoc morphological and immunocytochemical analysis.
07:34
Gold Nanoparticle Modified Carbon Fiber Microelectrodes for Enhanced Neurochemical Detection
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Cited by 20 •
2019
In this study, we modify carbon-fiber microelectrodes with gold nanoparticles to enhance the sensitivity of neurotransmitter detection.
FAQs
The injected compound can act at the target location and may also influence nearby neural circuits. After delivery, it can bind receptors, change neuronal excitability, or modify synaptic transmission. This local and regional reach allows researchers to connect chemical signaling with circuit function, while also requiring careful interpretation of whether an effect reflects the intended site or surrounding tissue.
Dose and timing determine how strongly and when the chemical signal affects the nervous system. Controlled dosing helps relate the amount delivered to changes in neuronal activity, behavior, or physiology, while defined timing helps separate immediate responses from later effects. Keeping these variables consistent improves comparisons between experimental groups and supports clearer pharmacological interpretation.
Researchers compare the compound-treated condition with appropriate control injections and examine the delivery location. These comparisons help determine whether an observed response is attributable to the neurochemical itself, the selected site, or the injection procedure. Without such controls, changes in behavior or physiology may be difficult to assign confidently to chemical signaling.
A study requires a defined target site, a selected neurotransmitter, neuromodulator, or related compound, and controlled delivery conditions. Researchers must also establish dose and timing parameters and include suitable injection controls. Together, these choices determine whether the experiment can connect a localized chemical manipulation with changes in neural function or measurable responses.
Researchers use this approach when they need to test how a particular chemical contributes to behavior, physiological responses, neural pathways, or pharmacological mechanisms. It can also support investigations of disease-related changes in nervous-system function. By manipulating signaling at a selected site, the method helps relate molecular or chemical activity to broader system-level outcomes.
Findings may reveal links between a delivered chemical and changes in neuronal excitability, synaptic transmission, behavior, or physiology. They can also inform understanding of neural pathways and disease-related signaling changes. Interpretation should consider the compound, dose, timing, delivery site, nearby circuit effects, and control-injection results rather than treating a single response as evidence of one mechanism.