P300

The P300 is a neuralevoked potentialcomponent of the electroencephalogram(EEG). This event-related potential(ERP) appears as a positive deflection of the EEG voltageat approximately 300 ms. It dominates at parietal electrode sites. The P300 is supposed to follow unexpected sensorystimuli or stimuli that provide useful information to the subjects according to his/her task.

History

Since the P300 is an extremely robust event-related potential, it is possible to see it without sophisticated analysis methods or devices. It was discovered early in the research of event-related potentials in 1965by Sutton and colleagues.^{[{{fullurl:Template:FULLPAGENAME}}#endnote_Sutton]} Since then, an enormous amount of research has been done to study the nature of this deflection.

Applications

This is one of the most well-studied of the humanEEG evoked components; it is thought to have applications in diagnostics or the construction of a viable brain-computer interface.

References

1. ^  S. Sutton, M. Braren, J. Zublin, and E. John, (1965) Evoked potential correlates of stimulus uncertainty Science, 150, 1187?1188.

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It uses material from the http://en.wikipedia.org/wiki/P300 Wikipedia article P300.