REM motivation induced by brief REM deprivation: the influence of cognition, gender, and personality.

Prominence of the brain's right-hemisphere information processing and intensity of dream experience are two theoretically related constructs that have been proposed as important psychological aspects of REM sleep. Either view is consistent with the prediction that the effect of REM deprivation will depend in part on the nature of cognitive activity that is initiated at the onset of each REM period and that "substitutes" for the interrupted REM process. In the present study, the effect of REM deprivation was more striking for female subjects given a digits task than for female subjects given a fantasy-reporting task during awakening used to induce REM deprivation for the first 6 hours of the night. High neuroticism appeared to exaggerate the effect. No corresponding pattern was observed for the male subjects. These preliminary finding may be exaggerated by cognitive activity that is functionally incongruent with those processes. The results also raise interesting questions about individual differences.     

Field dependence and the effect of REM deprivation on thirst.

Recently a number of studies have concerned the possible function of rapid eye movement (REM) sleep and the mastery of stress. The present study was designed to explore the possibility that REM sleep might play a function in reducing the potency of a stressful physiological stimulus, thirst, as well as the possibility that such a function might be specific to individuals falling at different points along the field-dependence dimension. While there was no difference between REM deprivation and non-REM awakening nights in subsequent morning thirst, there was a significant interaction between field dependence and night on morning thirst measures for 10 college students. These results are discussed in light of previous work on stylistic differences in dreaming and their possible role in adaptation to stress.     

Violence and touch deprivation in adolescents

The increasing incidence of violence among children and adolescents highlights the importance of identifying at-risk profiles as well as assessing interventions for preventing violence. Empirical research has suggested behavioral, central nervous system, and neurotransmitter/neurohormone dysregulation in violent individuals, including (1) an underaroused central nervous system characterized by right frontal electroencephalogram (EEG) hypoactivation, and (2) a neurotransmitter/neurohormone profile of lower norepinephrine, serotonin, and cortisol, and elevated dopamine and testosterone. The literature also suggests a disproportionate incidence of physical abuse and neglect or the lack of positive physical contact in violent individuals. In the studies we have conducted to date, there has been a relatively high incidence of anger and aggression in high school samples, even those that were relatively advantaged, as well as high levels of depression (one standard deviation above the mean), suggesting significant disturbance in these youth. Adolescents with these profiles also had less optimal relationships with their families, used illicit drugs more frequently, had inferior academic performance, and had higher depression scores. In our cross-cultural comparisons, preschoolers and adolescents were less physically affectionate and more aggressive in the United States versus France. Further, the U.S. youth received less physical affection as preschoolers, and as adolescents they engaged in more self-stimulating behaviors, perhaps to compensate for receiving less physical affection from their parents and peers. This supports the notion that less physical affection (or more physical neglect) can contribute to greater aggression. Massage therapy has been effective with violent adolescents, perhaps because the physical stimulation reduced their dopamine levels and increased their serotonin levels. Their aggressive behavior decreased and their empathetic behavior increased. These preliminary data need to be replicated in a larger sample with a more comprehensive set of measures in the context of identifying a diagnostic profile.     

REM sleep deprivation increases early morning pineal melatonin in castrated rats

Recently nighttime melatonin levels have been shown to be attenuated in depressive patients or patients with dementia of the Alzheimer type. On the other hand, depression can be transiently relieved by deprivation of rapid eye movement sleep. Since exogenous melatonin administration increases rapid eye movement sleep and slow wave sleep in the rat, could rapid eye movement sleep deprivation then inversely influence endogenous melatonin production? We found indices that in castrated Wistar rats 4 days of rapid eye movement sleep deprivation by the cuff pedestal method elevates the pineal content of melatonin by a factor of two at 1 to 2 h after light onset. Rapid eye movement sleep is thus suggested to influence pineal activity. This mechanism might be involved in the human depression-alleviating effect of rapid eye movement sleep deprivation.     

Development in moral judgment as indicated by rejection of lower-stage statements

Previous failures of preference rating scales to identify developmental differences in moral judgment may have occurred because the focus was on acceptance of high-stage reasons rather than on consistent rejection of lower-stage reasons. Attention focused on seventh-, ninth-, and eleventh-grade students' (N = 178) rejection of the lower-stage statements that they presumably comprehend but have to varying degrees dropped from their spontaneous-production repertoire. Students rated the adequacy of the reasons presented in statements written to exemplify Kohlberg's stages 1, 2, 3, 4, and 5. Ratings of Stage 1, 2, 3, and 4 statements showed clear age discrimination (all p's < .001). As in previous preference studies, higher-stage items produced no significant age differences. Implications for evaluation of change studies were noted.     

Response to cigarette deprivation as a function of oral fantasy.

The role of oral fantasy in reactions of heavy smokers to smoking deprivation was studied. Experimental subjects were first evaluated with the Holtzman Inkblot Test to measure amount of oral fantasy. They also evaluated themselves on a number of Semantic Differential continua. Smoking deprivation followed. Retest Holtzman blots and Semantic Differential rating scales were then administered. Subjects also indicated number of somatic symptoms and body image distortions produced by deprivation. Control subjects followed the same paradigm except they smoked throughout the procedure. It was found that the greater the orality of experimental subjects the greater the number of somatic symptoms and body distortions they experienced following deprivation; and the more they viewed self as having shifted in a less favorable and less potent direction. Such relationships were absent in the control group.     

Diabetes as experienced by adolescents

This study explored adolescents' perspective of their diabetic management. Data were collected via semistructured interviews with twelve counselors-in-training (aged 15 to 18) at a diabetic youth camp. Interviews were analyzed using the constant comparative method, which reinforces and reviews themes. These themes were further grouped into three categories: psychosocial, developmental, and clinical. A striking finding throughout the data was the ambivalence regarding diabetic issues. Major implications of this study are the richness of data available from adolescents who have diabetes, and the importance of considering the adolescent's perspective when planning diabetic care.     

Sleep deprivation in adolescents and adults: changes in affect

The present study investigated the impact of sleep deprivation on several aspects of affective functioning in healthy participants selected from three different developmental periods: early adolescence (ages 10-13), midadolescence (ages 13-16), and adulthood (ages 30-60). Participants completed an affective functioning battery under conditions of sleep deprivation (a maximum of 6.5 hours total sleep time on the first night followed by a maximum of 2 hours total sleep time on the second night) and rest (approximately 7-8 hours total sleep time each night for two consecutive nights). Less positive affect was observed in the sleep-deprived, compared to rested, condition. This effect held for 9 of the 12 positive affect items on the PANAS-C. Participants also reported a greater increase in anxiety during a catastrophizing task and rated the likelihood of potential catastrophes as higher when sleep deprived, relative to when rested. Early adolescents appraised their main worry as more threatening when sleep deprived, relative to when rested. These results support and extend previous research underscoring the adverse affective consequences of sleep deprivation.     

Ontogeny of behavioral responsiveness to sound in the chick embryo as indicated by electrical recordings of motility

The primary purpose of these experiments was to gather normative behavioral data regarding the ontogeny of responsiveness to sound in the chicken embryo. As a prerequisite, a sensitive ane accurate method for recording embryonic motility was developed (Experiment 1). By means of platinum electrodes inserted just beneath the shell membrane, potentials resulting from heartbeat and movement were recorded on a polygraph. The technique was found to be effective when applied to chick embryos 6 days and older. Correlations between visual observations of activity and the records produced by the electronic technique substantiated its accuracy. Behavioral responses of chick embryos (Stages 39-43) to acoustic stimulation (Experiment 2) were then recorded. High-intensity (115-dB SPL) tones of 400, 700, and 1400 Hz were used as stimuli. The earliest consistent responses were recorded from Stage 40 (ca. Days 14-15) subjects; the 700 and 1400 Hz tones produced statistically reliable inhibition of movement during the stimulus period compared with the post-stimulus period. Reliable increases in movement during the stimulus period were first recorded at Stage 42 (ca. Days 16-17) in response to 700 and 1400 Hz and at Stage 43 (ca. Days 17-18) in response to 400 Hz.     

Psychological need satisfaction,intrinsic motivation and affective response to exercise in adolescents

ObjectivesTo further understanding of the factors influencing adolescents' motivations for physical activity, the relationship of variables derived from Self-Determination Theory to adolescents' affective response to exercise was examined.DesignCorrelational.MethodAdolescents (N = 182) self-reported psychological needs satisfaction (perceived competence, relatedness, and autonomy) and intrinsic motivation related to exercise. In two clinic visits, adolescents reported their affect before, during, and after a moderate-intensity and a hard-intensity exercise task.ResultsAffective response to exercise and psychological needs satisfaction independently contributed to the prediction of intrinsic motivation in hierarchical linear regression models. The association between affective response to exercise and intrinsic motivation was partially mediated by psychological needs satisfaction.ConclusionsIntrinsic motivation for exercise among adolescents may be enhanced when the environment supports perceived competence, relatedness, and autonomy, and when adolescents participate in activities that they find enjoyable.     

Spatial and reversal learning in the Morris water maze are largely resistant to six hours of REM sleep deprivation following training

This first test of the role of REM (rapid eye movement) sleep in reversal spatial learning is also the first attempt to replicate a much cited pair of papers reporting that REM sleep deprivation impairs the consolidation of initial spatial learning in the Morris water maze. We hypothesized that REM sleep deprivation following training would impair both hippocampus-dependent spatial learning and learning a new target location within a familiar environment: reversal learning. A 6-d protocol was divided into the initial spatial learning phase (3.5 d) immediately followed by the reversal phase (2.5 d). During the 6 h following four or 12 training trials/day of initial or reversal learning phases, REM sleep was eliminated and non-REM sleep left intact using the multiple inverted flowerpot method. Contrary to our hypotheses, REM sleep deprivation during four or 12 trials/day of initial spatial or reversal learning did not affect training performance. However, some probe trial measures indicated REM sleep-deprivation-associated impairment in initial spatial learning with four trials/day and enhancement of subsequent reversal learning. In naive animals, REM sleep deprivation during normal initial spatial learning was followed by a lack of preference for the subsequent reversal platform location during the probe. Our findings contradict reports that REM sleep is essential for spatial learning in the Morris water maze and newly reveal that short periods of REM sleep deprivation do not impair concurrent reversal learning. Effects on subsequent reversal learning are consistent with the idea that REM sleep serves the consolidation of incompletely learned items.     

Relative deprivation and educational aspirations of 15-year-old adolescents in Japan

Social Psychology of Education - Higher education increases the likelihood of a healthy and successful life. This study investigated the association between relative deprivation and aspiration for...     

The wish to be soothed as a resistance.

As the analyst makes the correct interpretations of resistance in the opening phase of an analysis, the patient begins to feel understood, often for the first time. This feeling allays anxiety and depressive affects, and the patient comes to experience the analyst as a soother. These initial exchanges may lay the foundation for a positive transference which acts as a buffer against turbulent transferences. In some patients this positive transference develops rapidly, often with prompt symptom remission. In others--children as well as adults--the analyst must persistently interpret defensive regressions before a stable, positive transference can emerge. In either case, in order to avoid the analysis of conflict, some patients become resistant to the analysis of the wish to be soothed. Many of these patients have had a childhood filled with traumatic parental stimulation or rejection. Two clinical accounts illustrate these contentions.     

Thresholds for the perception of angular acceleration as indicated by the oculogyral illusion

A motorized chair (with precise servo controls) accelerated the observer in a clockwise (CW) or counterclockwise (CCW) direction at rates that ranged in logarithmic progression from 0.02 to 6.00 deg/sec². The target, a narrow collimated Line of light, was contained within a goggle device worn by the observer and therefore fixed in relative position to him. The illusion, appearing as rightward or leftward movement of the visual target in the direction of acceleration, was determined by a double staircase procedure among 300 normal and 4 labyrinthine-defective observers. None of the latter perceived the illusion. The majority of normal observers revealed no substantial directional difference (CW vs. CCW threshold). Threshold frequency distributions ranged in rate (deg/sec²) from 0.020 to 0.950; the threshold of response in more than half the normal observers was less than 0.10, in over three-fourths was less than 0.20, in over 90% less than 0.30, and 100% less than 1.00.