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Acetylcholine- and serotonin-dependent theta activities have been long proposed to exist. However, several studies have shown that serotonin tends to desynchronise hippocampal EEG activity. Theta(More)
Hippocampal theta activity is related to spatial information processing, and high-frequency theta activity, in particular, has been linked to efficient spatial memory performance. Theta activity is(More)
Hippocampal theta activity is the result of the concerted activity of a group of nuclei located in the brain stem and the caudal diencephalic area, which are together referred to as the synchronizing(More)
The differential characteristics of absolute power in the EEG theta (4–8 Hz) and gamma (30–45 Hz) frequency bands have been analysed in young (18–25 years old, n = 14) and mature adults (45–65 years(More)
Hippocampal theta activity is important for the acquisition of spatial information and is strongly influenced and regulated by extra-hippocampal inputs from the synchronising ascending system (SAS),(More)
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