Sleep data were obtained on 11 patients who had survived traumatic events and who complained of sleep disturbances. Each was awakened from REM and non-REM sleep for dream recall. The patients had lower sleep efficiency indices (because of prolonged sleep latency and larger amounts of "awake" plus "movement" time within sleep periods), shorter REM time, and longer REM latencies than did control...
Cluster analysis of 89 near-death experiences yielded three discrete types of such experiences: transcendental, affective, and cognitive. Demographic variables did not differentiate individuals having these different types of experiences, but cognitive near-death experiences were less frequent following anticipated near-death events.
A framework for the integration of meditation and psychotherapy is presented through a consideration of the psychobiological nature of meditation (the relaxation response) and discussion of a traditional meditation practice (mindfulness meditation) as an effective cognitive technique for the development of self-awareness. The mechanisms by which the emotional and cognitive changes of meditation...
Near-death experiences reportedly foster value transformations and decrease suicidal ideation. Eighty-nine survivors of near-death experiences judged values related to material and social success as less important than did 175 control subjects. Decathexis of personal failures may account for the reported suicide-inhibiting effect.
The serotonin precursor L-5-hydroxytryptophan reversed the symptoms of a 23-year-old man suffering from LSD-induced psychosis who participated in a randomized, double-blind crossover study of the drug and a placebo. This finding is compatible with the speculation that some LSD-induced psychotic disorders may be caused by a relative deficiency of CNS serotonin.
When the authors investigated aggressive behavior on a phencyclidine (PCP) detoxification and rehabilitation unit and compared similar types of behavior on a heroin unit, they found no differences between the two units. The urinary PCP levels of a subgroup of 75 patients admitted to the PCP unit who had PCP-positive urine were significantly higher than those of 75 patients admitted to an acute...
The authors report three cases of isolated sleep paralysis controlled by L-tryptophan with or without amitriptyline. Both agents increase CNS 5-hydroxytryptamine availability, whereas imipramine, which was ineffective in the one case in which it was tried, affects predominantly norepinephrine reuptake.
The authors review the few surveys that have been made of the incidence of out-of-body experiences. They then present data on 339 respondents to questionnaires who reported having had out-of-body experiences and 81 who had not. They analyze these data according to the conditions existing at the time of the experience, phenomenological features, and the long- and short-term impact of the...
In 1977 the American Psychiatric Association called for a critical examination of the clinical effectiveness of meditation. The author provides a review of the literature bearing on clinical and physiological comparisons of meditation with other self-control strategies. He begins by providing a definition of mediation and then cites the literature comparing mediation with such self-regulation...
The authors report a patient who suffered a full-blown manic attack after ingesting LSD or an LSD analogue. The patient experienced acute symptoms of LSD intoxication, which resolved but were followed in about 3 weeks by a typical manic episode of psychotic magnitude. The mania cleared with lithium therapy.
The authors conducted a double-blind crossover study to investigate the effects of marijuana on visual information processing. The authors used a tachistoscopic paradigm, and the results show no marijuana effect on the critical stimulus duration, a measure of stimulus intake. The visual backward masking data are compatible with a marijuana-induced slowness of information processing from labile...
The authors studied retrospectively 78 reports of "near-death experiences using subjects narratives and questionnaires, interviews, and medical records. Prior experiences suggestive of transcendence of death were more common among these subjects than among control populations, but prior experiences suggestive of extrasensory phenomena were less common. Subsequent changes in attitudes were more...
In this questionnaire survey the authors measured the outcome among 20 students randomly assigned to muscle relaxation training and 19 assigned to transcendental mediatation at one year (the number of respondents in each group was 13 and 16, respectively) and two and one-half years (the number of respondents was 18 and 17, respectively). At both follow-ups there were no differences between the...
In recent years a number of assessments of the non-Western consciousness disciplines have been undertaken by Western behavioral scientists. The author suggests that a variety of conceptual, methodological, experimential, and content inadequacies render the conclusions of these investigations of doubtful validity. He then describes the models of human nature postulated by these disciplines and...
Violence associated with chronic phencyclidine (PCP) abuse was investigated by administering a structured interview to 16 chronic PCP abusers. A more intensive study was done of another individual who committed murder and self-mutilation under the influence of PCP. The results suggest that there is no consistent association between PCP-related violence and a history of violence not related to...
During a 13-month period, 9 patients with phencyclidine-induced psychosis were admitted to Darnall Army Hospital. They exhibited hostility agitation, and tangentiality and had delusions of influence and religious grandiosity. Six subjects reported auditory hallucinations, and 4 were disoriented in at least 1 sphere. Despite treatment with antipsychotic medication, the psychotic episodes often...
The author reviews the literature on hallucinations that occur as a result of acute and chronic administration of cocaine. He examined the phenomenology of cocaine hallucinations in a group of 85 recreational cocaine users, 15 of whom reported hallucinatory experiences in visual, tactile, olfactory, auditory, and gustatory modalities. He discusses a new phenomenon of "snow lights" in terms of...
Phencyclidine appears to be unique in action compared with other psychedelic drugs, and its effects are less dependent upon the individual's personality than are the effects of LSD or mescaline. The authors discuss the sensory, psychological, and behavioral symptoms of phencyclidine intoxication. Most cases are of short duration and the only treatment necessary may be observation together with...
The authors warn physicians that intoxication by Angel's Trumpet (Datura sauveolens) is becoming more frequent due to its use by adolescents and young adults as a legal, readily available hallucinogen. Ingestion of Angel's Trumpet flowers or a tea brewed from them results in an alkaloid-induced central nervous system anticholinergic syndrome characterized by symptoms such as fever, delirium,...
The author reports two cases in which depersonalization occurred during the waking consciousness of individuals who had engaged in meditative techniques designed to alter consciousness. Psychiatrists should be aware of this phenomenon, as the number organizations in the "consciousness movement" is increasing, and should ask people manifesting depersonalization about any involvement in...
The authors used sleep laboratory data to predict responses to psychiatric treatment. The predictions were based on the assumptions that REM latency reflects the need for dreaming and therefore the need for adaptation and that REM time reflects the capacity for the adaptive work associated with REM sleep. Dream recall and dream content were considered indicators of psychological mindedness and...
The author describes a model of intoxicant use based on altered states of consciousness and reviews his own and others' research on marijuana to illustrate the utility of this model, which is derived from both introspective reports and observed data. The relationship of social behavior and cognitive functioning to the "intoxication state of consciousness" is discussed. This state of...
The authors review the research on N,N-dimethyltryptamine (DMT) as a possible "schizotoxin." DMT produces psychedelic effects when administered to normal subjects, the means are present to synthesize it in man, it has occasionally been found in man, and tolerance to its behavioral effects is incomplete. However, DMT concentrations have not been proven to differ significantly in schizophrenics...
Zen is one of several mental or spiritual disciplines that have become the object of recent scientific interest and theory. The authors discuss several aspects of Zen, such as the psychophysiological effects of meditation and the general impact of enlightenment, that are potential areas of fruitful research. They stress, however, that researchers can gain true understanding of the different...
Keeping biochemical determinations and clinical judgements independent, the authors investigated three aspects of the transmethylation hypothesis. They found that 26 acutely schizophrenic patients were no more likely to have bufotenine or N,N-dimethyltryptamine present in urine or elevated serum indolethylamine N-methyltransferase activity than 10 normal control subjects. The authors conclude...