Sofía I. Coto Guzmán edited Differently_from_the_delta_band__.tex  over 8 years ago

Commit id: 2fc04815a79c442f01825e8f261d30788fc5ef2f

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Differently from the delta band, the theta band does not seem to have a clear behavior regarding frequency amplitude: there are certain channels (and even specific frequency regions) in which the task block amplitude is greater than the rest block amplitude and vice versa. Besides, the frequency response for both blocks is much more similar than to in  the delta band. Electrodes F5 and FFC3 seem to present some interesting differences, though (the first one in particular). From about 5.5 Hz to about 7.5 Hz, F5 electrode shows greater frequency amplitude to at  the rest blocks. Task blocks show a similar response regarding the shape of the signal, but a smaller frequency amplitude. Something similar occurs to FFC3 electrode from about 6 Hz. Again, as in the delta band, both of the electrodes that have a more apparent difference in their signals are located in the left side of the scalp. Furthermore, the electrodes located above the right side of the scalp showed greater contributions to the theta band frequencies in the range between 4.5 and 6 Hz. Whereas for these electrodes in the most cases there are frequency peaks at about 6 Hz, to their counterparts electrodes (left side of the scalp), the frequency amplitude decreases at this same frequency.