Virtual Dictionary
ERP
Event-related potential or ERP is a standardised measure of brain response to either a given thought or a given sensory feedback. It is an attempt to standardise across individuals, the signal detected when a controlled event occurs, such as a pinprick on the palm, or a subject instructed to think a given thought.
ERP is stereotypical, meaning it very rarely happens that the ERP is produced as expected, due to differences between individuals. The brain respionse from stimulus is often very close to other individuals as the sensory pathways tend to be very similar. Thoughts alone do often differ significantly.
ERP is frequently used as a health diagnosis tool, where similarity to a stereotypical signal is good enough. It is also a research direction for BCI, where eliminating the noise and distortions between individuals to gain approximately the same signal from the same stimulus would be a tremendous breakthrough for complex signal processing.
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