Tackling creativity at its roots: Evidence for different patterns of EEG alpha activity
related to convergent and divergent modes of task processing.
Jensen, "Modulation of posterior alpha activity
by spatial attention allows for controlling a continuous brain-computer interface," Brain Topography, vol.
Brains alpha activity
is highly reduced in euthymic bipolar disorder patients.
The higher the alpha activity
before the passive training, the better the people learned.
Interestingly, Kubitz and colleagues (1996; 1997) observed decreases in alpha activity
during exercise, while the present investigation observed increases in alpha activity
A particular form of spatial reorganization of alpha activity
is noted in tumor damage to mediobasal regions of the temporal lobe with the involvement of the hippocampus and close-lying structures in the pathological process.
One of the general findings from EEG research in this area has been that an increase in alpha activity
, commonly seen as skill level increases, is not simply indicative of cortical deactivation, but is indicative of neural reorganization concomitant with the acquisition of more efficient, task-specific cognitive and motor processes (Nunez, 1995; Smith, McEvoy, & Gevins, 1999).
It is true that alpha activity
is not solely modulated by visual activity but although we classified other dream activities the strongest correlation was found for visual imagery.
* Patients with Alzheimer's disease tend to show a slowing of alpha activity
below 8 Hz, a decrease in alpha activity
, a decrease in the alpha to theta ratio, an increase in theta activity, and an increase in delta activity.
It was expected that, in comparison with the HC individuals, the AC ones would show lower alpha activity
while solving creative problems.
Gross alpha and beta activity in bone: For gross alpha activity
in bone, there was a significant difference (ANOVA, p < 0.01) between locations.
Different patterns of occipital and sensory motor alpha activity
were observed during kinaesthetic versus visual imaging in which greater relative occipital activation occurred during the latter task.