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Psychedelic Neuroplasticity

... of hallucinogen persisting perception disorder (hppd), the subject retains some of the visual effects of hallucinogens long after the drug should have metabolized;5 persisting reactions to neural stress imply neuroplasticity. Psychedelics have been...

EEG coherence in post-LSD visual hallucinations

... as hallucinogen persisting perception disorder (hppd). We studied 38 HPPD subjects with a mean of 9.7 years of persistent visual hallucinations and 33 control subjects. Measures of local and medium distance EEG spectral coherence were calculated fr...

What is Consciousness?

... in novel ways.13 EEG studies of subjects with hppd have shown that when the visual cortex loses coherence with other areas of the brain and coherence among local visual networks increases, spontaneous hallucinations are produced.14 Sensory depriv...

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