Gap-free Mode

Gap-free mode is an electrophysiological recording format that continuously captures a biological signal over a defined time interval, making it useful for observing activity that occurs unpredictably. In patch-clamp experiments, the amplifier samples membrane current or voltage without dividing the recording into triggered sweeps, allowing spontaneous ion-channel events, synaptic currents, and gradual changes in baseline to remain in one uninterrupted trace. Researchers use this mode to measure event frequency, amplitude, duration, and drug-induced changes in cellular excitability. It supports studies of neuronal communication, membrane physiology, and pharmacological responses by preserving the timing and continuity of cellular signals.

Gap-free Mode - Related Videos

Education

JoVE Core - Biology

Gap Junctions

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2026

Multicellular organisms employ a variety of ways for cells to communicate with each other. Gap junctions are specialized proteins that form pores between neighboring cells in animals, connecting the cytoplasm between the two, and allowing for the exchange of molecules and ions. They are found in a wide range of invertebrate and vertebrate species, mediate numerous functions including cell differentiation and development, and are associated with numerous human diseases, including cardiac and...

Gap Junctions

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2023

The cytoplasm of adjacent animal cells can exchange small molecules, ions, and secondary messengers via the communication channels which form the gap junctions. These junctions comprise a few hundred to thousands of molecular channels, each made of two halves, called the connexon hemichannel. A connexon is a hexamer of six transmembrane connexin proteins, which assemble radially, thus forming a pore or channel in the center. One connexon hemichannel docks with a corresponding connexon on the...

What is a Mode?

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2023

The mode is one of the commonly used measures of a central tendency. It is defined as the most frequent value in a data set. There can be more than one mode in a data set if multiple values have the same highest frequency. For instance, suppose that the Statistics exam scores of 20 students are: 50; 53; 59; 59; 63; 63; 72; 72; 72; 72; 72; 76; 78; 81; 83; 84; 84; 84; 90; 93. Here, the mode is 72, as it occurs most frequently, five times. A data set with two modes is called bimodal. For example,...

Research

JoVE Journal - Biology

Analysis of the Gap Junction-dependent Transfer of miRNA with 3D-FRAP Microscopy

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Cited by 6 •

2017

Here, we describe the application of three-dimensional fluorescence recovery after photobleaching (3D-FRAP) for the analysis of the gap junction-dependent shuttling of miRNA. In contrast to commonly applied methods, 3D-FRAP allows for the quantification of the intercellular transfer of small RNAs in real time, with high spatio-temporal resolution.

Ventilatory Modes

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2025

Mechanical ventilators are life-saving devices that support or replace spontaneous breathing. They deliver breaths to patients through varying methods known as ventilator modes. Understanding these modes is critical for healthcare providers managing patients with respiratory failure. There are three ventilatory modes: full support, partial support, and spontaneous. These are described below. Full Support Modes Full support modes include controlled mechanical ventilation, continuous mandatory...

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