# Tag Info

1

Yes of course. Most work with eeg and imagination focuses on the inner voice and what people are telling themselves and thinking to themselves. Imagine (pun intended) if we could reach into the mind of a terrorist and as they think about plots. Its not really all that hard but its not at all covert at the moment (all the schizoiod type personalities can ...

0

To clear this up, there is a distinction between phase difference and phase synchronization. Phase synchronization = is the phase difference constant with time? One crude way to measure phase synchronization would be to partition long signals $x(t)$ and $y(t)$ into many disjoint windows, compute the phase difference in each window using either Method 1 or ...

1

Methods 1 and 2 are matematically equivalent, but I have experienced that method 2 is computationally more efficient for high sampling rates and large ranges of delay (notice that method 2 does not require a loop).

2

If I understand your question correctly, yes, since ERP involves averaging over similar events, very accurate time-locking to stimulus onset is critical. The idea of an ERP is that activity relevant to the stimulus will happen at a similar timepoint after similar stimuli--if you don't have an accurate time stamp (usually to the level of single milliseconds ...

2

The Emotiv system has been evaluated in a research setting. Badcock et al. (2013) recorded EEG activity with the Emotiv EPOC and a more conventional laboratory system simultaneously, and found that both systems produced similar results for ERPs with a relatively high signal-to-noise ratio, but it was harder to detect less reliable signals with the EPOC than ...

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