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Hyperpolarization in Medical Definition

Depolarization-induced suppression of inhibition

...opic , typically results in the influx of chloride ions into that target cell. This build-up of negative charge from the chloride ions results in the hyperpolarization of the target cell, making it less likely to fire an action potential . Accordingly, any ionic current that hyperpolarizes a cell is called an inhib...
Hyperpolarization in Biological News

New 'control knobs' for stem cells identified

...entiating into fat and bone cells. They found that hyperpolarization (increased difference between the voltage in the i... vs. fat differentiation. To determine whether hyperpolarization was functionally required for differentiation, the...ion. More study is needed to determine whether hyperpolarization also determines which specific type of cell stem c...
Hyperpolarization in Biological Technology

Bruker Introduces HyperQuant™, a Unique Bench-Top NMR Reader to Quantify Hyperpolarization

At the 2008 World Molecular Imaging Congress (for details, see www.wmicmeeting.org ), Bruker BioSpin introduces HyperQuant™, a bench-top NMR reader for precisely quantifying both the magnetic hyperpolarization as well as the thermal polarization of a sample. The HyperQuant applies time-dom...

Berkeley scientists bring MRI/NMR to microreactors

...here is a net excess in the para spin state even at room temperature and in the complete absence of a magnetic field. Under the right conditions, this hyperpolarization can be passed on to other nuclei and used to substantially boost the strength of their MRI/NMR signals by several orders of magnitude. Pines, Bouch...
Hyperpolarization in Biological Definition

Hyperpolarization

Hyperpolarization has several meanings: In biology , hyperpolarization occurs when a cell's membrane potential dips below its resting level . In physics , hyperpolarization is the selective polarization of nuclear spin in atoms far beyond normal thermal equilibrium. ...

Depolarization

...ed ions (such as sodium or calcium ) into the cell. Alternatively, depolarization can also happen if potassium channels are closed. Compare to hyperpolarization . Depolarization of membrane potentials is important for other cell types, particularly muscle cells. Related topics membrane potential ...

Ion channel

... Diversity and activation Voltage-gated channels sense the transmembrane potential and open or close in response to depolarization or hyperpolarization , respectively. Examples include the sodium and potassium voltage-gated channels of nerve and muscle, and the voltage-gated calcium channels that c...
Hyperpolarization in Biological Dictionary

Hyperpolarization

Hyperpolarization is a change in a cell's membrane potential that makes it more negative. It is the opposite of a depolarization. 4.3 Hyperpolarization ("undershoot") 4.4 Refractory period. 5 Propagation ... and the balancing outward potassium current (repolarization/ hyperp...

Rhodopsin

... Electronica music singles, watch music videos, listen to free streaming mp3s, & read ... Cyclic Pathway of Rhodopsin and its Relationship to hyperpolarization of the Rod ... Rhodopsin undergoes a cyclic decomposition and reconstitution in response to the ... Rhodopsin (RHO) To see compiled data on fur...

Depolarization

...cells, a large enough depolarization may result in an action potential. hyperpolarization is the opposite of depolarization , and... Depolarization of axon... must precede the ... That this depolarization was replaced by a slow hyperpolarization in the ... Such depolarization could allow afferent excitatory postsynap...
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