The ADD/ADHD pattern has been documented to present itself in several manifestations on the QEEG. Figure 1 presents the results of a large research study which delineated the subgroups of the ADD/ADHD child in terms of the QEEG variables. In the figure the blue color indicates below normative values and the red color indicates above normative values. This data was obtained under eyes closed condition.
When addressing individual cases, it is always important to note that individual treatment cannot be determined by reference to a group pattern.
In the activation situation the patterns which can occur can appear different than the eyes closed data. In the following figure, the theta values are elevated above normal while the beta values are lower than the norm. This example is similar to type 2 but has lowered levels of beta activity. As the higher gamma frequency data is not obtained in most eyes closed databases, the problem evident in the right most head figure would not appear.
In the head figures where there is one location with no circle, the empty location represents the origin of a "flashlight" which "sends" out its beam to the other locations. When the beam arrives at a particular location a coherence value is calculated. The colors of the circle indicated the standard deviation (SD) difference from the normative reference group. The white color indicates that the subject was within the range between +.50 and -.50 standard deviations. The light blue indicates the subject was between -.50 and -1.50 SD. The dark blue indicates the subject's value was below -1.50 SD. Light orange indicates the subject was between +.50 SD and +1.50 SD while the dark orange indicates a value above +1.50 SD. The number in the circle is the SD value.