Competency information
Details
Measure and apply the electrodes for the recording of a visual evoked potential on a normal subject and assist in performing evoked potential recordings.
Considerations
- Standard operating procedure for recording evoked potentials.
- The principles and importance of marking electrode sites, of placing electrodes and confirming the contact impedances are correct.
- The importance of ensuring that the patient is in a comfortable position and the effect on the quality of recording.
- Principles and importance of correct positioning of the stimulator.
- How to provide the necessary level of support and reassurance to the patient throughout the investigation.
- Requirements and principles of recording of evoked potentials, including monitoring the technical quality of raw data and identifying and eliminating artefacts (biological and non-biological).
- The importance of ensuring that sufficient samples are averaged to yield a waveform that is stable and contains minimal noise.
- How to check evoked potentials for reproducibility.
- Appropriate waveform marking.
Relevant learning outcomes
| # | Outcome |
|---|---|
| # 1 | Outcome Measure visual, auditory or somatosensory evoked potentials in a normal subject. |