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Patch Clamp01:18

Patch Clamp

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Many fundamental cell functions such as muscle contraction and nerve transmission rely on the electrical signals produced by the movement of positively and negatively charged ions across the cell membrane. One competent method to record current flowing across the whole cell or single ion channel is the patch-clamp technique.
In this method, a glass micropipette containing electrolyte solution is tightly sealed against a small portion of the cell membrane. As a result, a patch of the cell...
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Related Experiment Video

Updated: May 2, 2026

Two-photon Calcium Imaging in Neuronal Dendrites in Brain Slices
10:35

Two-photon Calcium Imaging in Neuronal Dendrites in Brain Slices

Published on: March 15, 2018

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Simultaneous patch-clamping and calcium imaging in developing dendrites.

Thomas Kleindienst, Christian Lohmann

    Cold Spring Harbor Protocols
    |March 5, 2014
    PubMed
    Summary
    This summary is machine-generated.

    This study correlates electrophysiological spiking patterns with dendritic calcium transients in rat hippocampal neurons. This method allows for the analysis of neuronal activity in dendrites, overcoming limitations of cell body imaging.

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    Simultaneous Electrophysiological Recording and Calcium Imaging of Suprachiasmatic Nucleus Neurons
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    Last Updated: May 2, 2026

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    Simultaneous Electrophysiological Recording and Calcium Imaging of Suprachiasmatic Nucleus Neurons
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    Simultaneous Electrophysiological Recording and Calcium Imaging of Suprachiasmatic Nucleus Neurons

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    Area of Science:

    • Neuroscience
    • Calcium Imaging
    • Electrophysiology

    Background:

    • Intracellular calcium ([Ca(2+)]i) increases reliably reflect neuronal action potential (AP) firing.
    • Traditional calcium imaging focuses on cell bodies, risking phototoxicity and missing subcellular events.
    • Analyzing dendritic or axonal calcium transients is crucial for understanding neuronal communication and development.

    Purpose of the Study:

    • To establish a method for correlating AP firing with dendritic calcium transients.
    • To enable the study of neuronal activity in subcellular compartments beyond the cell body.
    • To investigate the relationship between electrophysiological patterns and calcium dynamics in dendrites.

    Main Methods:

    • Simultaneous imaging of calcium transients in dendritic segments of hippocampal neurons.
    • Whole-cell patch-clamp recordings to capture electrophysiological spiking activity.
    • Utilizing neonatal rat hippocampal slice cultures for experiments.

    Main Results:

    • Successfully correlated electrophysiological spiking patterns with observed dendritic calcium transients.
    • Demonstrated the feasibility of deducing spiking patterns from subcellular calcium activity.
    • Provided a quantitative relationship between AP firing and calcium concentration in individual dendritic segments.

    Conclusions:

    • This approach allows for the determination of neuronal spiking patterns from dendritic calcium imaging.
    • It overcomes limitations of cell body-centric imaging, enabling broader investigations.
    • The findings support the use of dendritic calcium imaging for studying neuronal function and development.