Characterization of the psychological, physiological and EEG profile of acute betel quid intoxication in naïve subjects.

Eyes Open 1 – eyes open reading Reading after chewing gum was associated with a marginally significant global increase in the spectral power of theta waves ( Figure 3B ) and topographically specific increase in beta and gamma power in posterior parietal region (P3,P4) ( Figure 4E,G ).

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In contrast to gum, regional changes in spectral power during betel quid intoxication failed to achieve significance in any frequency ( Figure 4F,H ).

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In the current study the effect of chewing gum similarly appears to have been limited to a decrease in the global power of low beta waves that was stronger in occipital regions and a borderline significant increase in alpha power in the prefrontal regions.

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