A measure of cognitive attentional resources. Reduction in voltage may signal changes in cognitive function with such factors as age, concussions, or poor cardiovascular fitness (e.g. high blood pressure).

A measure of cognitive processing and brain response speed. P300 slowing may signal changes in cognitive function with such factors as age, concussions, or poor cardiovascular fitness (e.g. arterial plaque).

A measure of speed in response to an audible odd tone (distinct from brain reaction time, Audio P300 Delay Latency). This relies on different pathways than the P300 Delap, so physical reaction time may be different from your brain speed. This may decline with such factors as age,  fatigue, or concussions.

EEG P300 Voltage data is processed with various algorithms and is statistically analyzed, sometimes comparing values with “normative” database reference values. The processed EEG data is commonly converted into color maps of brain functioning called “Brain maps”.