Psychophysiological aspects of nightmares, night terrors, and sleepwalking

Monitoring sleep through electroencephalography and electroculography has identified the different sleep stages in which nightmares, night terrors, and sleepwalking occur. Questionnaire surveys have supplemented the findings of case studies of these sleep disorders. Neurotransmitters operative during these sleep disorders have enlarged the knowledge of the psychophysiological dimensions especially of nightmares.

Nicotine as a psychoactive drug

Nicotine is a paradoxical drug in that it both stimulates and depresses functions. It affects the central nervous system, the peripheral nervous system, the cardiovascular, the skeletal, and the gastrointestinal systems. Its psychoactive effects and drug dependency potential as well as some therapeutic approaches to smoking cessation have been reviewed here. More research information is needed for professionals working with those who want to quit smoking.

Diazepam (Valium): its dependency liability

Reports of the withdrawal syndrome following discontinuation of diazepam and drug dependence fears have contributed to diazepam's displacement as the most popular anxiolytic agent. Reports of the withdrawal syndrome, the factors involved in withdrawal, and the remedies proposed for diazepam withdrawal symptoms are reviewed.

Grouping students for instruction: effects of learning style on achievement and attitudes

The present study examined the effects of matching and mismatching American middle-school students with a preference for learning alone or learning with peers with selected instructional treatments in order to determine the impact upon their attitudes and achievement in social studies. Analysis revealed that the learning-alone preference performed significantly better in the learning-alone condition and that the learning-with-peers preference performed significantly better in the learning-with-peers condition. However, no-preference students also performed significantly better in the learning-alone condition than with peers. In addition, data revealed that the learning-alone and the learning-with-peers students had significantly more positive attitudes when matched with their preferred learning style; the nopreference students had more positive attitudes in the learning-alone condition.

Diffuse meningeal thickening associated with pleural mesothelioma

A case of pleural mesothelioma with diffuse spinal meningeal thickening as shown by magnetic resonance imaging is reported.

New applications of lithium therapy

Several placebo-controlled double-blind studies have indicated that lithium sometimes augments antidepressants, converting nonresponding patients to responders. Lithium therapy has also benefitted some schizoaffective patients and some alcoholics. Side effects are minimal. Mechanisms involved in lithium's effectiveness have not yet been discovered.

Transabdominal and transvaginal ultrasonography of uterine perforation following suction curettage

Uterine perforation is a rare complication of suction curettage. We report the sonographic findings of uterine perforation with extrusion of fetal parts through a previous cesarean section scar in a patient who underwent a first trimester therapeutic abortion. No previous examples of the sonographic diagnosis of scar rupture during curettage or of the transvaginal ultrasonographic findings in uterine perforation have been reported.

Geophysical variables and behavior: LVII. Seasonal affective disorder and phototherapy

Seasonal affective disorder, depressive symptoms that recur in fall and winter and abate in spring-summer, for many patients in the United States and Europe, have been alleviated by exposure to bright, full spectrum light for several hours daily (phototherapy). The characteristics of these patients, the procedures used, the theoretical explanations of the mechanisms, and the potential of phototherapy are reviewed.

Psychologists and children of alcoholic parents

Clinical evidence has pictured children of alcoholic parents as vulnerable physically, emotionally, socially, academically, and at risk for alcoholism. Review of research indicated that some of these clinical insights have been validated, but much more is needed to fill out an accurate picture for psychologists who will be asked to work with them.

Psychologists and alcoholic women

Alcoholism among women often has been treated using a model based on research with alcoholic men. Women react differently to alcohol than men both physiologically and psychologically and their drinking patterns are different from men's. Treatment facilities for alcoholism have not been as available for women as for men and treatment must be individualized for the differences between men and women problem drinkers and for the differences among alcoholic women.

Alcoholism: etiologies proposed and therapeutic approaches tried

Alcohol, probably the most popular mood-altering drug, has frightening consequences when abused. Genetic factors and sociocultural influences contribute to alcoholic behavior. Study of endocrines, neurotransmitters, and neuropeptides may reveal biological markers to help identify those at risk for alcoholism. Drinking patterns are often based on the expectation of alcohol's mood-altering quality. The focus of treatment has expanded to include not only drinking behavior but also emotional, social, and vocational adjustment. Controlled drinking has proved effective for some, so that complete abstinence is no longer the sole goal of therapy. Behavioral, martial, group and individual, outpatient and inpatient therapy, and drugs as adjuncts, all help some alcoholics, but none is a cure for all. Answers still lag behind questions but researchers have registered some advances that challenge therapists to enlarge therapeutic approaches to fit the multifaceted picture of alcoholism.

Neuroleptic-resistant schizophrenics

According to Crow's postulated positive-negative distinction, negative symptoms of schizophrenia are less responsive to neuroleptic drugs. Not all research evidence supports that expectation, however, so that neuroleptics need not be withheld from any schizophrenic patients. Other aspects of Crow's hypothesized distinction have indicated possible promising results, but more research is required.

Auricular microelectrostimulation: naloxone-reversible attenuation of opiate abstinence syndrome

This study evaluated the effects in rats of very low amplitude (10 mu amp) charge-balanced 10-Hz stimulation delivered bilaterally to low impedance points on the outer ear. This microelectrostimulation markedly and significantly reduced the number of opiate abstinence signs observed following a week of continuous morphine infusion. This effect was prevented by subcutaneous injection of 3 mg/kg naloxone, suggesting that stimulation of endogenous opioid activity plays a major role in the actions of auricular microelectrostimulation.

Psychophysiological aspects of caffeine consumption

Caffeine may be the psychoactive compound most widely used in the United States. Caffeine appears in coffee, tea, cola drinks, chocolate bars and cocoa, cold and diet medications, and sleep-prevention compounds; the amount of caffeine varies in different substances and according to preparations. Research on caffeine's effects on alcoholic drinks, alertness, anxiety, heart rate, performance, and sleep is reviewed. Caffeine is usually not harmful, although long-range effects of caffeine have not been thoroughly investigated. Caffeine's effects often have been studied by means of ingestion of coffee but substances other than caffeine may be active in coffee and tea. The placebo effect contributes to some of the effects experienced by coffee-caffeine users.

Psychopharmacological therapy of deviant sexual behavior

Psychopharmacological approaches to controlling male deviant sexual behavior, especially sexual recidivism and sexual deviants on probation, have been reported in psychiatric literature. In Europe, the drug cyproterone acetate, and in the United States, medroxyprogesterone acetate, Provera, and in the long-acting form, Depo-Provera, have all benefitted exhibitionists and pedophiliacs, and reduced sex drive in sexual deviants. The combination of pharmacotherapy and either psychotherapy or behavioral therapy has been the most effective approach to reducing the sex drive of sexual deviants.

Psychophysiological effects of methylphenidate (Ritalin)

The nature and psychophysiological effects of methylphenidate whose metabolism, pharmacokinetics, and effects on human behavior are not well known are the focus of this review. Methylphenidate treatment of attention deficit disorder with hyperactivity is presented summarily.

Psychopharmacological investigation of panic disorder by means of lactate infusion

The contribution of research with lactate infusion to an understanding of agoraphobia, generalized anxiety disorder, and panic disorder (PD) was reviewed. Lactate-induced panic seems to differentiate panic disorder from generalized anxiety disorder. Panic disorder seems to have important links to depression; both respond to tricyclic antidepressant drugs and neither responds well to the benzodiazepine antianxiety drugs. Response to pharmacotherapy, epidemiological surveys, and familial studies support the distinction between panic disorder and generalized anxiety disorder and the overlap between major depression and panic disorder. Understanding the mechanism of lactate-induced attacks may provide a better understanding of the pathophysiology of naturally occurring panic.

Neuroleptic malignant syndrome

Neuroleptic Malignant Syndrome is a disabling reaction to neuroleptic drugs recently discussed in psychiatric literature in Europe, Japan, and the United States. It is rare but potentially fatal and is more likely to occur in men, especially young men, than in women. The cause is unknown, but dopamine depletion in the brain is suspected. Treatment usually begins by withdrawing the neuroleptics and then providing supportive therapy for the usual symptoms of high fever, muscular rigidity, labile blood pressure, and tachycardia. The Neuroleptic Malignant Syndrome usually lasts two to three weeks.

An overview of cocaine use and abuse

Use of cocaine is traced from South American Indians through 19th century European patterns into 20th century United States. Different methods of using cocaine produce effects with different potencies; the free-basing method is most potent and potentially most lethal and addictive. Addiction to cocaine has a different pattern than the physiological effects of heroin but is no less real, perhaps even more dangerous.

Successful treatment of obsessive-compulsive disorders

Behavioral therapy and drugs have significantly improved obsessive-compulsive disorder (OCD) symptoms. A variety of behavioral therapy methods have been employed, but exposure and prevention of response, particularly, have reduced ritualistic actions of many OCD patients. Many psychoactive drugs have been tried; the tricyclic antidepressant drugs (clomipramine or Anafranel), especially in research outside the United States, have alleviated OCD symptoms as well as depression. Compulsive rituals have responded more often than obsessive actions to both behavioral and psychopharmacological therapy. Recent research has suggested that psychophysiological as well as traditional psychogenic factors may contribute to the etiology, course, and alleviation of OCD.

Purification and partial amino acid sequence of a bovine cartilage-derived collagenase inhibitor

An inhibitor of mammalian collagenase from bovine scapular cartilage has been purified to homogeneity. The inhibitor, extracted from cartilage using 2 M NaCl, was applied to an A-1.5m gel filtration column. Inhibitor eluted at an apparent Mr of 28,000. Further purification was achieved by ion exchange chromatography, gel filtration, and reverse-phase high performance liquid chromatography. A purification of greater than 1,000-fold was achieved. The inhibitor was judged homogeneous by the appearance of a single band on a silver-stained 15% sodium dodecyl sulfate-polyacrylamide gel. Reduced inhibitor had an Mr of 27,400, unreduced inhibitor had an Mr of 23,900. NH2-terminal sequence data were obtained for the first 45 residues. The bovine cartilage-derived inhibitor exhibits greater than 65% homology over the first 23 residues with a collagenase inhibitor purified from human skin fibroblasts maintained in cell culture. This is the first demonstration that collagenase inhibitors extracted directly from tissue may be similar to those obtained from culture medium.

Psychological aspects of anorexia nervosa

Research on anorexia nervosa (AN), its etiology and treatment, and the results of outcome studies are reviewed. Early studies focused on psychodynamic aspects of AN whereas recently the brain's neurotransmitters and hypothalamic area, particularly, having been investigated as contributing to symptoms of AN. No treatment is successful for all AN patients. Recovery is slow and is often resisted. Diet, psychotherapy, and drugs have sometimes alleviated symptoms for some AN patients but the root cause and the best treatment have eluded a century of research.