It is anticipated that the use of a spatial/holistic MR strategy will be reflected in extensive EEG activation over the right hemisphere, especially over the parietal lobes, while a verbal/analytic MR strategy will be reflected in strong activation over the left hemisphere, especially over the left frontal and temporal areas.
EEG Activation Differences Between the Matching and the Rotation Task
Subsequently it was stated that tramadol may cause EEG activation during anaesthesia, although it does not appear to antagonize the hypnotic effects of volatile anaesthetics (6).
nevertheless the EEG changes were not at levels thought to be associated with awareness, indicating that tramadol, whilst causing EEG activation, had no effect on depth of anaesthesia (5).
REM sleep is characterized by EEG activation
(relatively highfrequency, low-amplitude EEG in the range of 5-7 Hz).
EEG activation has frequently been described in the context of approach/withdrawal behavior, with relative left frontal EEG activation being associated with approach behavior and relative right frontal EEG activation being associated with withdrawal behavior (Davidson & Fox, 1988; Fox, 1994).
We are proposing this profile for the reactive aggressive children who are aggressive because their dopamine levels are high but less aggressive than proactive aggressive children because they have the inhibitory effects of right frontal EEG activation (notably associated with withdrawal) (Fox, 1994) and higher levels of norepinephrine (known to have regulatory effects on dopamine) (Rogeness et al.
In contrast, a verbal/analytic MR strategy in which features of the image may be compiled and verbally labeled will rely on left hemisphere functioning (and heightened EEG activation
at these electrods sites, particularly those positioned over the left frontal area), given that this region is considered to be the predominant neural substrate for language processing (Braver et al.
A "dysregulation" profile was noted for the infants of depressed mothers, including lower Brazelton scores, more indeterminate sleep, and elevated norepinepbrine, epinephrine, and dopamine levels at the neonatal period, and greater right frontal EEG activation
, lower vagal tone, and negative interactions at the 3- and 6-month periods.
Thirty adolescents with greater relative right frontal EEG activation
and symptoms of depression were given either massage therapy (n = 14) or music therapy (n = 16).
The question for this study was whether music could alter electrophysiological and biochemical measures of depression, namely right frontal EEG activation
and stress hormone (cortisol) levels.
Recent studies have found that positive affect is associated with greater relative left frontal EEG activation
and negative affect is associated with greater relative right frontal EEG activation