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Addiction: all studies

Page 830 of 855: studies 8,291 to 8,300 of 8,547, newest first. Back to the addiction overview

Research

Inhibition of prolactin release by stimulation of presynaptic serotonin autoreceptors.

Life Sciences December 6, 1982 J A Clemens, M E Roush 8 citations

The effects of 5-methoxy-N,N-dimethyltryptamine (5-MeODMT), a serotonin agonist with a preferential action on presynaptic autoreceptors, on prolactin release in male rats was determined. Basal serum prolactin levels were not altered after administration of 1.0, 2.0, 5.0, 10.0 or 20.0 mg/kg of 5-MeODMT. Pretreatment with 5-MeODMT reduced prolactin release by agents that depend on serotonergic...

Depersonalization in the light of Brentano's phenomenology

British Journal of Medical Psychology December 1, 1982 F. Kräupl Taylor

The symptoms of depersonalization are examined in the light of the phenomenological views evolved by Franz Brentano. He had come to the conclusion that our conscious experiences are primarily directed towards objects (contents) that are ‘phenomenal’ or ‘intentional’ in the sense that they do not necessarily have counterparts in the external world. In experiencing such an object, a person...

Medullary serotonergic neurons are insensitive to 5-MeoDMT and LSD.

European Journal of Pharmacology July 30, 1982 J Heym, G F Steinfels, Barry L. Jacobs 21 citations

A comparison was made of the effects of 5-MeoDMT or LSD on serotonergic unit activity in the dorsal raphe nucleus (DRN) and nucleus raphe pallidus (NRP) of freely moving cats. NRP neurons were substantially less responsive than DRN neurons to both drugs. NRP neurons were unresponsive to behaviorally effective low doses of these drugs whereas the activity of DRN neurons was strongly depressed....

Are psychological studies of religion on the right track?

Religion July 1, 1982 Richard A. Hutch 9 citations

Researchers in psychology of religion in America and Britain have inherited the theoretical and research traditions established by W. James, S. Freud and J. Dittes. New nomothetic or theoretical frameworks have been called for in order to organize a plethora of idiographic data. A response to the call has been slow, but Paul Pruyser designated at least six areas in which the development of...

Citalopram antagonizes the stimulation by lysergic acid diethylamide of presynaptic inhibitory serotonin autoreceptors in the rat hypothalamus.

Journal of Pharmacology and Experimental Therapeutics July 1, 1982 Salomón Z. Langer, Chantal Moret 100 citations

Slices of rat hypothalamus prelabeled with [3H]-5-hydroxytryptamine ([3H]-5-HT) were superfused and the release of the labeled transmitter was elicited either by electrical stimulation or by fenfluramine. Whereas the electrically stimulated release of [3H]-5-HT was completely abolished by removing calcium from the superfusion medium, the fenfluramine-induced release of [3H]-5-HT was...

The Structure of Laboratory Dream Reports in Blind and Sighted Subjects

The Journal of Nervous and Mental Disease May 1, 1982 Nancy H. Kerr, David Foulkes, Marcella Schmidt 82 citations

Ten college-educated young adults (four sighted, four congenitally blind, and two adventitiously blind) were studied in a sleep laboratory one night a week for 8 weeks. Dream reports were collected from electroencephalogram-defined sleep onset, rapid eye movement sleep, and non-rapid eye movement sleep, following a standard awakening schedule and interview format. Dream reports were analyzed in...

Interactions of metergoline with diazepam, quipazine, and hallucinogenic drugs on a conflict behavior in the rat

Psychopharmacology March 1, 1982 Randall L. Commissaris, Richard H. Rech

The effects of diazepam quipazine, lysergic acid diethylamide (LSD), and 2,5-dimethoxy-4-methylamphetamine (DOM) were examined on a conditioned suppression paradigm. Food-deprived rats were trained to drink a liquid diet from a tube. Subsequently, intermittent 7-s tones were presented during the daily 10-min sessions, the tube being electrified during the last 5 s of each tone. The subject...

Opposite effects of N,N-dimethyltryptamine (DMT) and 5-methoxy-n,n-dimethyltryptamine (5-MeODMT) on acoustic startle: spinal vs brain sites of action.

Neuroscience & Biobehavioral Reviews 1982 Randall L. Commissaris, M Davis 25 citations

The present studies examined the role of the spinal cord and the brain in mediating the effects of the hallucinogens N,N-dimethyltryptamine (DMT) and 5-methoxy-N,N-dimethyltryptamine (5-MeODMT) on the acoustic startle response in the rat. Systemic administration of these agents, which distributes to both the brain and spinal cord, produced opposite effects, as DMT depressed and 5-MeODMT...

Right hemispheric mediation of dream visualization: a case study.

Cortex December 1, 1981 Nancy H. Kerr, David Foulkes

Our paper addresses, as did a recent study by Greenwood et al. (1977), the question of differential right vs. left hemispheric involvement in REM-sleep dreaming. A male subject with extensive lesioning of the right hemisphere and consequent contralateral homonymous hemianopia was studied for 2 nights in a sleep laboratory where a dream report was collected following each of 6 awakenings from...

Antagonism of the behavioral effects of 2,5-dimethoxy-4-methylamphetamine (DOM) and quipazine by metergoline.

Pharmacology, Biochemistry, and Behavior October 1981 Randall L. Commissaris, Richard H. Rech

The present study examined the disruptive effects of the phenethylamine hallucinogen 2,5-dimethoxy-4-methylamphetamine (DOM) and the putative 5-hydroxytryptamine (5-HT) agonist quipazine on fixed ratio-40 (FR-40) operant responding alone or after pretreatment with putative 5-HT antagonist metergoline. Food-deprived male rats were trained to bar press on a FR-40 schedule for food reinforcements;...