*2.3.2 Test results*

The smoothing filter, band pass filter along with FFT in combination resulted in best output for the frequency domain analysis and the results are observed, noted and represented graphically in **Table 2** as there is time domain graph at the top and frequency domain graph at the bottom in the experimental analysis column in **Table 2**.

As most of the subjects are performing the meditative test they should experience a very high amount of theta waves they ranged between 5.1 to 7.6 Hz i.e., there will be a maxima peak within the range of 5.1 to 7.6 Hz in the frequency domain signal and also


**Table 3.**

*This table represents the frequency analysis of subjects numerically.*

when the subject performs a demanding motor task he experienced a high amount of gamma waves with maxima peak at 35.9 Hz (**Table 3**).

Hence, the test results prove that the subject's mental state falls within specific range when a specific mental task is performed. This ends the validation part of the Emotiv Insight EEG device.
