What Else Should I Know?
It is important to take note that the mini-Q measures only 2 to 4 sites on the head at a time, while a full QEEG measures at least 19 sites on the head simultaneously. So for a mini-Q to measure 19 sites, it has to be repeated 5 times in sequence if a 4 channel measurement device is used. It would have to be repeated 10 times if a 2 channel measurement device is used. The problem with such sequential measurement is that while you are recording 4 sites, you do not have a clue what is happening at the other 15 or more sites. To say the least, this can give a very misleading picture of what’s going on in the brain.
In a full QEEG, at least 19 sites on the head are measured and recorded simultaneously. This simultaneous measurement is crucial as it allows us to have a good idea on how we use our brain and what goes on when we are engaged on a task. For example: If one location of the brain shows excessive neural activities while on task, we can assess if the other 18 or more sites are affected by this excessive activities. This cannot be done with the mini-Q.
For some reason, the mini-Q measures EEG data only for 1 minute (60 sec). This amount of data is too little to do a rigorous statistical analysis. This is because the recording will usually contain noise, interferences or signals which are not EEG or brain waves, such as eye blinks or movements. These non-EEG signals must be removed before any analysis can be done to assess brain function. Having these contaminants will distort the analysis and lead to a wrong conclusion. So with 60 seconds of raw data, the amount of left data after removal of the contaminants can be insufficient for a good analysis. This can result in arriving at a wrong conclusion.