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Applications  Pain Research EP (Evoked Potential) |
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| EP (Evoked Potential) |
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The Challenge
Evoked potentials are used to clinically diagnose a wide variety of central nervous system disorders, or in research, to study the functions of the brain. Learning and documenting evoked potential is impossible without a pain stimulator works integrally in an EEG or imaging environment.
Scientific Background
Evoked potential is the registration of the electrical responses of active brain cells, as detected by electrodes placed on the surface of the head at various positions. The evoked potential, unlike the waves on an EEG, is elicited by a specific stimulus applied to the visual, auditory or pain sensory receptors. Evoked Potential is useful in documenting objective response to pain. |
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Test Screen |
Applying Medoc Solutions in Studying Evoked Pain
In order to visualize an Evoked Potential, a recording EEG (Amplifier, Electrodes) and pain stimulation device must work integrally. They must be connected via Trigger input and the resulting EEG must be cut into segments around the stimulus and averaged.
The EEG recorded Evoked Potential is a visualization of the direct response, or "voltage"potential, evoked by a stimulus. The PATHWAY model CHEPS (Contact Heat Evoked Potential Stimulator) presents the stimulus with a heated thermode sensor with a sharp slope, and sends a signal (trigger) to the EEG, connected via BNC cable, for delivering the painful stimulus. The data is then averaged, by with all the segments added together and divided by the number of segments for receiving an average.
Click here to download EP application sheet
Click here to download Pathway brochure |
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