Abstract:
:The current study examined QEEG power and coherence of ayahuasca experiences with two experienced participants in a Brazilian jungle setting. An exploratory case series design was adopted for naturalistic field research. EEGs recorded during visual imagery was compared to eyes-closed baselines. The most important findings were increases in global EEG coherence in the 36-44 Hz and 50-64 Hz frequency bands for both subjects. Widely distributed cortical hyper-coherence seems reasonable given the intense synesthesia during ayahuasca experiences. Other findings include increased modal EEG alpha frequency and global power decreases across the cortex in most frequency bands, which concur with the EEG of psychedelics literature. Exploratory analysis revealed the usefulness of analyzing single Hz bins over the standard wide-band analysis. The discovery-oriented naturalistic approach developed for this study resulted in potentially important findings. We believe that finding increases in global gamma coherence during peak psychedelic experiences might contribute to the discussion of binding theory. Also, in light of recent research with gamma coherence during advanced meditative conditions, our findings might further the comparison of shamanic psychedelic practices with meditation.
journal_name
J Psychoactive Drugsjournal_title
Journal of psychoactive drugsauthors
Stuckey DE,Lawson R,Luna LEdoi
10.1080/02791072.2005.10399798subject
Has Abstractpub_date
2005-06-01 00:00:00pages
163-78issue
2eissn
0279-1072issn
2159-9777journal_volume
37pub_type
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journal_title:Journal of psychoactive drugs
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journal_title:Journal of psychoactive drugs
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journal_title:Journal of psychoactive drugs
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