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Hypnotic Entrainment and Induced Trance States

... flowing through the neural network. eeg and Brainwaves [fig]1;1[/fig]The oscillations of the brain can be measured via electroencephalography (EEG), a technique in which electrodes are placed on the skin and scalp to aggregate the vol...

Anticholinergic drug-induced sleep-like EEG pattern in man

Clinical, quantitative, and qualitative eeg investigations were carried out in a group of psychotic subjects with the anticholinergic drugs Ditran and atropine sulfate. Both anticholinergics induced, in relatively ldquolowrdquo dosages (Ditran, 0.005...

Effects of a Psychedelic, Tropical Tea, Ayahuasca, on the Electroencephalographic (EEG) Activity of the Human Brain during a Shamanistic Ritual

eeg data from 12 volunteers participating in a workshop in Brazil were recorded under field conditions before and after a shamanistic ritual in which the psychoactive tea, ayahuasca, was consumed. Following three doses of the tea, the subjects showed...

Effects of the South American Psychoactive Beverage Ayahuasca on Regional Brain Electrical Activity in Humans: A Functional Neuroimaging Study

Ayahuasca, a South American psychotropic plant tea obtained from Banisteriopsis caapi and Psychotria viridis, combines monoamine oxidase-inhibiting beta-carboline alkaloids with N,N-dimethyltryptamine (DMT), a psychedelic agent showing 5-HT2A agonist...

Topographic pharmaco-EEG mapping of the effects of the South American psychoactive beverage ayahuasca in healthy volunteers

... quantitative-electroencephalography (q-eeg), a noninvasive method measuring drug-induced variations in brain electrical activity. Methods Two doses (one low and one high) of encapsulated freeze-dried ayahuasca, equivalent to 0.6 and 0....

The Phase of Ongoing EEG Oscillations Predicts Visual Perception

... at the individual luminance threshold while eeg was recorded. Although the stimulus on each trial was identical, subjects detected approximately half of the flashes (hits) and entirely missed the other half (misses). Phase distributions across ...

EEG coherence in post-LSD visual hallucinations

... subjects. Measures of local and medium distance eeg spectral coherence were calculated from all subjects. Coherence, a measure of spectral similarity over time, may estimate cortical coupling. In the eyes-open state in HPPD subjects, widespread red...

EEG gamma coherence and other correlates of subjective reports during ayahuasca experiences

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 i...

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