Találati lista | Tudóstér

001-es BibID:	BIBFORM055336
Első szerző:	Frecska Ede (pszichiáter)
Cím:	Enhancement of creative expression and entoptic phenomena as after-effects of repeated ayahuasca ceremonies / Ede Frecska, Csaba E. Móré, András Vargha, Luis E. Luna
Dátum:	2012
ISSN:	0279-1072
Megjegyzések:	Studying the effect of psychedelic substances on expression of creativity is a challenging problem. Our primary objective was to study the psychometric measures of creativity after a series of ayahuasca ceremonies at a time when the acute effects have subsided. The secondary objective was to investigate how entoptic phenomena emerge during expression of creativity. Forty individuals who were self-motivated participants of ayahuasca rituals in Brazil completed the visual components of the Torrance Tests of Creative Thinking before and the second day after the end of a two-week long ceremony series. Twenty-one comparison subjects who did not participate in recent psychedelic use also took the Torrance tests twice, two weeks apart. Repeated ingestion of ayahuasca in the ritual setting significantly increased the number of highly original solutions and phosphenic responses. However, participants in the ayahuasca ceremonies exhibited more phosphenic solutions already at the baseline, probably due to the fact that they had more psychedelic experiences within six months prior to the study than the comparison subjects did. This naturalistic study supports the notion that some measures of visual creativity may increase after ritual use of ayahuasca, when the acute psychoactive effects are receded. It also demonstrates an increased entoptic activity after repeated ayahuasca ingestion.
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban creativity dimethyltryptamine hallucinogens phosphenes psychedelics
Megjelenés:	Journal of Psychoactive Drugs. - 44 : 3 (2012), p. 191-199. -
További szerzők:	Móré Elek Csaba (1966-) (pszichiáter szakorvos) Vargha András Luna, Luis Eduardo
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
Borító:
Saját polcon:

001-es BibID:	BIBFORM034447
035-os BibID:	PMID:14621134
Első szerző:	Frecska Ede (pszichiáter)
Cím:	Effects of the Amazonian psychoactive beverage Ayahuasca on binocular rivalry : interhemispheric switching or interhemispheric fusion? / Ede Frecska, Keith D. White, Luis E. Luna
Dátum:	2003
Megjegyzések:	An early theoretical analysis supposed changes in hemispheric integration as the basis of altered state of consciousness induced by psychoactive drugs. Brain imaging studies revealed right cortical activation after administration of hallucinogens. Recent studies on binocular rivalry suggest that interhemispheric switching is the neural substrate of the perceptual oscillations observed during dichoptic stimulus presentation. The current study tested perceptual alternation in ceremonial participants, who ingested the South American hallucinogenic beverage ayahuasca, to examine the claim that there might be changes in interhemispheric function under the influence of hallucinogens. Ingestion of ayahuasca resulted in a decrease of rivalry alternation rates, increased length of one percept and there was evidence of phenomenal fusion. The findings are in line with results of brain activation studies and support the concept of interhemispheric fusion in altered states of consciousness.
Tárgyszavak:	Orvostudományok Klinikai orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban külföldön készült közlemény
Megjelenés:	Journal of Psychoactive Drugs. - 35 : 3 (2003), p. 367-374. -
További szerzők:	White, Keith D. Luna, Luis Eduardo
Internet cím:	Intézményi repozitóriumban (DEA) tárolt változat
Borító:
Saját polcon: