P300 OddBall Paradigm Example

The neurophysiology event related potential waves P300 and N400 reflect high cognitive brain function in attending, processing and discriminating between the manipulated probability of target versus non-target stimulus presentation.

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Fig. 1

Averaged response to pure tone stimuli: 2000Hz rare stimulus (red line) target , 1000Hz frequent stimulus (blue line) Non target . Positive down plot.

Fig. 2

Another example of averaged response to pure tone stimuli: 2000Hz rare stimulus (red line) target, 1000Hz frequent stimulus (blue line). Non target Positive deflection.

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Fig. 3

Power Spectrum Estimation of Fig.2- Horizontal axis in Hz, vertical axis in uV2

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Fig. 4

Power Spectrum Estimation of fig. 2- Horizontal axis in frequency bands (Delta, Theta, Alfa, Beta and Gamma, vertical axis in dB

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