QEEG is a little useless because it can only measure the activity of the upper lager of the cortex. In depression and depersonalization there are like activity in lagers of the prefrontal cortex that is beneath another lager of the prefrontal cortex. So, you only get a reading of the upper part of the cortex. The QEEG shows overactivity in very large areas of the prefrontal cortex and likely also the ventrolateral prefrontal cortex. The right side of the head is also active and it is also seen in depersonalization. Locations like the right TPJ and angular gyrus is located there and likely plays a role in the derealisation aspect in depersonalization. We have similar information from brain scans. But, the question is how will you intervene with this information and where? Form the perspective of rTMS the areas found overactive might be close to 10.locations. You can not do rTMS on 10.locations but one or two. You have to find a location that is central for all the changes and you have to be able to stimulate this location. A normal rTMS coil can go 1.cm deep into the brain. A deep coil can go 2.cm deep. A location like the right VLPFC can only be partly stimulated with a normal coil. 2/3 are likely unaffected. So, doing a qEEG do not really solve much other than one can see the brain is not working as it should.
in a recent evaluation of all brain examinations done in depersonalization they excluded SPECT scans, PET and qEEG. The reason is likely that these examinations will be too old and the risk of errors and to diffuse data to high.
Ok yeah. Notice that its overactive slowwave activity, which i believe to be not typical.
So in that sense its underactive. Lots of theta which is associated with daydreaming.
Not sure if thats typical for dpdr patients. But then again i only have derealization and no numbness or dp.