enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Thermally stimulated depolarization current - Wikipedia

    en.wikipedia.org/wiki/Thermally_Stimulated...

    It can be used to measure the thermally stimulated depolarization of molecules within a material. One method of doing so is to place the material between two electrodes, cool the material in the presence of an external electric field, remove the field once a desired temperature has been reached, and measure the current between the electrodes as ...

  3. Rheobase - Wikipedia

    en.wikipedia.org/wiki/Rheobase

    Depolarization increases the Na + current through the persistent channels, resulting in a lower rheobase; hyperpolarization has the opposite effect. The strength-duration time constant increases with demyelination, as the exposed membrane is enlarged by inclusion of paranodal and internodal membrane.

  4. Thermal laser stimulation - Wikipedia

    en.wikipedia.org/wiki/Thermal_laser_stimulation

    Laser stimulation highlights differences in thermal characteristics between areas containing defects and areas which are defect-free. As the laser locally heats a defective area on a metal line which is carrying a current , the resulting resistance changes can be detected by monitoring the input current to the device.

  5. Action potential - Wikipedia

    en.wikipedia.org/wiki/Action_potential

    Action potentials result from the depolarization of the cell membrane (the sarcolemma), which opens voltage-sensitive sodium channels; these become inactivated and the membrane is repolarized through the outward current of potassium ions. The resting potential prior to the action potential is typically −90mV, somewhat more negative than ...

  6. Thermally stimulated current spectroscopy - Wikipedia

    en.wikipedia.org/wiki/Thermally_stimulated...

    Thermally stimulated current (TSC) spectroscopy (not to be confused with thermally stimulated depolarization current) is an experimental technique which is used to study energy levels in semiconductors or insulators (organic or inorganic). Energy levels are first filled either by optical or electrical injection usually at a relatively low ...

  7. Threshold potential - Wikipedia

    en.wikipedia.org/wiki/Threshold_potential

    A. A schematic view of an idealized action potential illustrates its various phases as the action potential passes a point on a cell membrane. B. Actual recordings of action potentials are often distorted compared to the schematic view because of variations in electrophysiological techniques used to make the recording.

  8. Persistent sodium current - Wikipedia

    en.wikipedia.org/wiki/Persistent_Sodium_Current

    Persistent sodium current generation is hypothesized to occur by the incomplete inactivation of the voltage-gated sodium channel current (INa), where the channel becomes constitutively active and conducts sodium, creating a "persistently active" inward sodium current. Upon depolarization, the four identical motifs of the sodium channel (which ...

  9. Depolarizing prepulse - Wikipedia

    en.wikipedia.org/wiki/Depolarizing_prepulse

    Possibly resulting from the depolarization of the S 4 segments and the little time given for inactivation. For long duration DPP's the III and IV domains of the sodium channels (discussed above) are given more time to bind with their respective channel pores, thus the threshold current is observed to increase with an increasing DPP duration. [2]