Ordinary and Recurrent Dream Recall of Active, Past and Non-recurrent Dreamers During and After Academic Stress

The role of stress in the onset and frequency of recurrent dreams was investigated by comparing dream recall of students undergoing naturalistic stress conditions. Thirty nine students in active, past and non-recurrent dream groups (n = 13) recorded frequency of nights per week involving overall and recurrent dream recall in the week prior to mid-term examinations and in a neutral study week in second semester. Self-report measures of everyday hassles and uplifts, anxiety and positive and negative affect experienced during these conditions were also collected. Anxiety and negative affect were reported as significantly higher in the pre-examination week. Overall the groups reported dreams on significantly more nights in the pre-examination week than the post examination week. Recurrent dream nights increased during the stress week for the active recurrent dream group but there was no change in recurrent dream recall for the other groups. These findings are consistent with theories that the experience of emotional stress is a critical factor in the onset and persistence of recurrent dreams.     

Menstrual-cycle phase and sexual behavior in semi-free-ranging stumptail macaques (Macaca arctoides)

The sexual behavior and female reproductive cycles of a group of island-dwelling stumptail macaques (Macaca arctoides)were monitored over a 6-month period, yielding 530 observation hr and 268 copulations. Compared to nondominant males, the dominant male copulated at a relatively high rate throughout the cycle, but largely with one high-ranking female. The non-dominant males copulated most frequently at midcycle. Female presenting was highest at midcycle, but only to the dominant male. Cross-study discrepancies may be due to different observation methods and restricted environmental conditions that mask female-initiated sexual behavior. The more naturalistic setting of this study allowed for a fuller expression of proceptivity. Contrary to some previous conclusions, present findings suggest that both hormonal and socioenvironmental factors influence the patterns of sexual behavior found in stumptail macaque colonies.     

The surveillance state of behavioral automation

Genetics' demand for increased throughput is driving automatization of behavior analysis far beyond experimental workhorses like circadian monitors and the operant conditioning box. However, the new automation is not just faster: it is also allowing new kinds of experiments, many of which erase the boundaries of the traditional neuroscience disciplines (psychology, ethology and physiology) while producing insight into problems that were otherwise opaque. Ironically, a central theme of current automatization is to improve observation of animals in increasingly naturalistic environments. This is not just a return to 19th century priorities: the new observational methods provide unprecedented quantitation of actions and ever-closer integration with experimentation.     

Dream Practices in Medieval Tibet

This essay presents a variety of medieval Tibetan Buddhist dream practices culled from many different sources, such as medical texts, biographies, religious texts, and folklore. Some of this material is here translated into English for the first time. The dreaming techniques presented in these texts bring out religious and philosophical connections between body and consciousness. The range and diversity of the original sources required a broad interdisciplinary approach using literary studies, religious studies, philosophy, linguistics, and other disciplines.     

New Directions in the Study of Dream Content Using the Hall and Van de Castle Coding System

Both methodological and statistical innovations add to the usefulness of the Hall and Van de Castle system for the content analysis of dream reports. In addition, there are weaknesses in most rating scales for the study of dream content, and numerous methodological and statistical problems call into question many past studies of dream content. In an introduction to this special issue, these possibilities and problems are discussed and then demonstrated through a critique of the literature on gender and dream content.     

Patterns of ingestive behavior and anterior tooth use differences in sympatric anthropoid primates

Little research has been directed towards the examination of ingestive behaviors in wild primates. This paper describes a naturalistic study of anterior tooth use in four sympatric anthropoid species: Hylobates lar, Macaca fascicularis, Pongo pygmaeus, and Presbytis thomasi. Instantaneous group scan data were collected during nearly 1,800 hours of observation between August 1990 and July 1991 at the Ketambe Research Station in the Gunung Leuser National Park, Sumatra, Indonesia. Ingestive behaviors are documented for specific food items and compared among the primate taxa. Results indicate significant differences among the species in preferred methods of food ingestion. These differences are related in part to dietary differences, and in part to other aspects of each primate's biology and ecology. © 1994 Wiley-Liss, Inc.     

Impact of naturalistic lighting on hospitalized stroke patients in a rehabilitation unit: Design and measurement

Introduction and rationale: Stroke is a major cause of acquired cerebral disability among adults, frequently accompanied by depression, anxiety, cognitive impairment, disrupted sleep and fatigue. New ways of intervention to prevent these complications are therefore needed. The major circadian regulator, the suprachiasmatic nucleus, is mainly controlled by natural daylight, and the blue spectrum is considered the most powerful. During stroke rehabilitation, patients typically are mostly indoors and therefore not exposed to the natural daytime variation in light intensity. Furthermore, several rehabilitation hospitals may be exposed to powerful light in the blue spectrum, but at a time that is adversely related to their endogenous circadian phase, for example in the late evening instead of the daytime. Hypothesis: Naturalistic light that mimics the natural daytime spectrum variation will have a positive impact on the health of poststroke patients admitted to rehabilitation. We test specifically for improved sleep and less fatigue (questionnaires, polysomnography, Actiwatch), improved well-being (questionnaires), lessen anxiety and depression (questionnaires), improved cognition (tests), stabilizing of the autonomous nervous system (ECG/HR, blood pressure, temperature) and stabilizing of the diurnal biochemistry (blood markers). Study design: The study is a prospective parallel longitudinal randomized controlled study (quasi randomization). Stroke patients in need of rehabilitation will be included at the acute stroke unit and randomized to either the intervention unit (naturalistic lighting) or the control unit (CU) (standard lighting). The naturalistic light is installed in the entire IU (Cromaviso, Denmark). Conclusion: This study aims to elucidate the influence of naturalistic light on patients during long-term hospitalization in a real hospital setting. The hypotheses are based on preclinical research, as studies using naturalistic light have never been performed before. Investigating the effects of naturalistic light in a clinical setting is therefore much needed.     

Geographic Variation in Note Composition and Use of chick‐a‐dee Calls of Carolina Chickadees (Poecile carolinensis)

The aim of this study was to determine whether geographic variation exists in the composition of note types in the chick‐a‐dee call of Carolina chickadees. This determination is of interest for two reasons: earlier studies with a related species suggested minimal geographic variation in note composition, and geographic variation in social signals may represent important developmental or selection processes shaping signal use. Carolina chickadees were recorded in a naturalistic observation study in west‐central Indiana. Chick‐a‐dee calls were analyzed and compared to calls from an eastern Tennessee population that had been described in a previously published study (Auk, 125, 2008, 896). Despite much similarity in the basic rules by which notes are organized to compose calls, there were several significant differences in how calls of the two populations were structured. Furthermore, birds from Indiana used their chick‐a‐dee calls in certain contexts in different ways compared to birds from Tennessee. These findings suggest interesting population‐level variation in this call system, and future research should be able to determine whether these differences are driven by evolutionary, ecological, or developmental factors, or some combination of these factors.     

Encouraging natural feeding behavior in captive-bred black and white ruffed lemurs (Varecia variegata variegata)

Captive breeding of endangered species is commonly proposed as a means of conserving biodiversity. The suggestion is that captive populations can be built up to provide individuals to reinforce or re-establish wild populations. However, there is evidence to suggest that captive-bred animals lack the skills necessary for survival in their natural habitat. This research was designed to assess whether a group of captive-bred Varecia variegata variegata exhibit such behavioral deficiencies in relation to feeding behavior compared to two wild groups. A further aim was to determine which of four methods of food presentation and two captive environments were most effective in encouraging the exhibition of natural feeding behavior. An identical focal animal, instantaneous time-sampling technique was used to collect data from the wild groups in the Betampona Reserve, Madagascar, and the captive group at Chester, UK. Results from Betampona confirm the highly frugivorous and arboreal nature of V. v. variegata. Under all captive conditions, except the rooftop feed in the cage environment, the captive V. v. variegata spent significantly less time feeding than their wild conspecifics. Suspensory feeding postures are an important adaptation enabling wild V. v. variegata to harvest fruit in the small-branch setting. Similar frequencies of use of such postures to those observed at Betampona were most effectively encouraged among captive V. v. variegata in the cage environment by the rooftop food presentation method and on a naturalistic island exhibit by the suspended method of food presentation. Differences in feeding behavior between the wild and captive V. v.variegata can be explained in terms of structural differences between their environments. As naturalistic captive environments allow lemurs to experience the challenges associated with feeding in the wild, it is strongly recommended that zoos endeavor to provide them with such conditions. Zoo Biol 17:379–392, 1998. © 1998 Wiley-Liss, Inc.     

Synonymous Nucleotide Divergence and Saturation: Effects of Site-Specific Variations in Codon Bias and Mutation Rates

The synonymous divergence between Escherichia coli and Salmonella typhimurium is explained in a model where there is a large variation between mutation rates at different nucleotide sites in the genome. The model is based on the experimental observation that spontaneous mutation rates can vary over several orders of magnitude at different sites in a gene. Such site-specific variation must be taken into account when studying synonymous divergence and will result in an apparent saturation below the level expected from an assumption of uniform rates. Recently, it has been suggested that codon preference in enterobacteria has a very large site-specific variation and that the synonymous divergence between different species, e.g., E. coli and Salmonella, is saturated. In the present communication it is shown that when site-specific variation in mutation rates is introduced, there is no need to invoke assumptions of saturation and a large variability in codon preference. The same rate variation will also bring average mutation rates as estimated from synonymous sequence divergence into numerical agreement with experimental values. Received: 10 July 1998 / Accepted: 20 August 1998     

河北省医学重点学科人力资源现状研究

目的 探索重点学科人力资源现状。方法 对重点学科人力资源进行现状分析。结果 重点学科共有4 059人;年龄在25岁及以上、45岁以下的占71.2%;工作年限15年以下的占69.5%;硕士研究生学历的占47.3%,本科学历的占38.4%;高级职称的占45.7%。结论 重点学科汇集了大量优秀人才,学科成员年龄分布合理,工作年限偏低,学历以硕士研究生和本科为主,职称偏高,重点学科与重点发展学科内部学历、职称构成存在差异。     

Citizens’ understanding of welfare of animals on the farm: An empirical study

Many people believe that welfare standards for nonhuman animals on farms need to be improved. However, the definition of farm animal welfare (FAW) remains unclear, as different disciplines have developed competing understandings of FAW. Some studies have investigated citizens’ understanding of FAW through quantitative surveys. This study combined both closed-ended and open-ended questions and compared the findings from the different types of questions. For the open-ended question, respondents mostly named criteria in the categories of “housing system” and “management practice”; however, for the closed-ended question, the category “animal health” was most important. These findings suggest that not only whom you ask determines what comprises animal welfare, but how you ask. These findings should be considered when developing new animal welfare programs to increase the likelihood that the new programs will be accepted by the broader public and meet its expectations. In particular, improvements concerning animal health need to be publicized and clearly communicated to citizens, as health-related aspects are important to many people even though those aspects may not be the first thing they mentioned when asked.     

Really taking Darwin seriously: An alternative to Michael Ruse's Darwinian metaethics

Michael Ruse has proposed in his recent book Taking Darwin Seriously and elsewhere a new Darwinian ethics distinct from traditional evolutionary ethics, one that avoids the latter's inadequate accounts of the nature of morality and its failed attempts to provide a naturalistic justification of morality. Ruse argues for a sociobiologically based account of moral sentiments, and an evolutionary based casual explanation of their function, rejecting the possibility of ultimate ethical justification. We find that Ruse's proposal distorts, overextends and weakens both Darwinism and naturalism. So we propose an alternative Darwinian metaethics that both remedies the problems in Ruse's proposal and shows how a Darwinian naturalistic account of the moral good in terms of human fitness avoids the naturalistic fallacy and can provide genuine, even if limited, justifications for substantive ethical claims. Thus, we propose to really take Darwin seriously.The authors are equally responsible for the writing of this paper.     

Female Remating in Drosophila ananassae: Evidence for the Effect of Density on Female Remating Frequency

Drosophila ananassae, a cosmopolitan and domestic species, is largely circumtropical in distribution and belongs to the ananassae species complex of the ananassae subgroup of the melanogaster species group. In the present study, experiments were conducted to investigate the effect of density on female remating frequency by employing different wild-type and mutant strains of D. ananassae. Two experimental designs, i.e., 2-h daily observation and continuous confinement, were used. The results show that there is significant dependence of remating frequency on density in all strains tested under both experimental designs except in a wild-type strain (Bhutan), which shows no dependence of remating frequency on density under 2-h daily observation design. This finding provides evidence that density may increase the frequency of female remating in D. ananassae.     

Gut content analysis to study predatory efficacy of Nesidiocoris tenuis (Reuter) (Hemiptera: Miridae) by molecular methods

Nesidiocoris tenuis is considered to make significant contributions to the control of greenhouse pests such as whiteflies, thrips, leafminers, lepidopterans, and spider mites, although there is little information based on direct observation of the predation of N. tenuis on these target pests. We developed a method to perform gut content analysis of N. tenuis based on DNA in which specific PCR primers were designed to detect the DNA of target pests. By means of gut‐content analysis, we found that the percentage of N. tenuis preying on Bemisia tabaci and Thrips palmi was approximately 40% in the field.     

Stereotypic behavior and fecal cortisol level in captive giant pandas in relation to environmental enrichment

Stereotypic behavior is exhibited by a wide range of captive animals. Its association with hormones, especially elevated cortisol level and lack of naturalistic stimuli in the environment, has been little studied. This study hypothesizes that stereotypic behavior is caused by stress due to lack of appropriate, naturalistic stimuli in the environment. Using four adult pandas (Ailuropoda melanoleuca) in the Beijing Zoo from March–July in 2003, we tested the following predictions: 1) stereotypic behavior and fecal cortisol level will not change associated with the progress of reproductive state; 2) there is a positive correlation between the occurrence of stereotypic behavior and fecal cortisol level; and 3) environmental enrichment by adding a naturalistic stimulus will reduce both stereotypic behavior and fecal cortisol level. We did not find any significant differences in the occurrence of stereotypic behavior and fecal cortisol level but did find a significant difference in the total time engaged in displaying the stereotypic behavior among the three estrous periods. The level of stereotypic behavior was correlated with elevated fecal cortisol level. Enrichment simply by adding a naturalistic stimulus did not show significant effects on stereotypic behavior, or on fecal cortisol level. Our results supported the second prediction, but did not completely support the first and the third ones perhaps because of the small sample size. Additionally, our results showed that stereotypic behavior might be a response to a heightened level of cortisol. Zoo Biol 0:1–15, 2006. © 2006 Wiley‐Liss, Inc.     

Much Ado About Very Little: The Small Effect Sizes When Home and Laboratory Collected Dreams Are Compared

We report a reanalysis of the original codings of dream reports collected at home and in the sleep laboratory from the same participants studied by Hall and Van de Castle in 1964. We used Cohen'sh statistic for effect sizes to argue that, even when statistically significant, most of the differences between the two samples are small to medium in magnitude. This finding suggests that past arguments over the relative usefulness of the two types of samples might not have occurred if the magnitude of effect sizes had been taken into account. The one exception concerns aggressions of various kinds, which also show the greatest variability with age, gender, and culture. It is concluded that useful dream samples for studies using the Hall and Van de Castle coding system can be collected in the laboratory or from normal recall at home and that effect sizes should be calculated in all dream content studies.     

Serum free prostate-specific antigen and zinc levels in experimental acute pancreatitis

Serum free prostate-specific antigen (fPSA) is the most useful tumor marker for prostatic cancer screening. However, recently, fPSA has also been detected in sera from patients with pancreatic diseases. In addition, it has been shown that zinc (Zn) concentration might change in both serum and tissues in pancreatic disease. In the present study, we measured serum concentrations of fPSA and Zn as possible markers and prognostic factors in an experimental acute-pancreatitis model. Twenty-five female Wistar albino rats were divided into two groups: the control group (n=10) and the experimental group (n=15). Acute pancreatitis was induced by injection of ethyl alcohol into the common biliary duct. The animals were sacrificed 24 h later to detect the concentrations of serum fPSA and Zn. fPSA values were detected to be significantly higher in the experimental group p<0.001). There was also a significant decrease in the serum Zn level of the acute-pancreatitis group (p<0.001). In conclusion, these findings suggested that a combination of these parameters might represent a significant improvement on the diagnostic value of each of them separately and provide a powerful tool for differential diagnosis and prognosis in pancreatic diseases.     

Distance between AER and ZPA Is Defined by Feed-Forward Loop and Is Stabilized by their Feedback Loop in Vertebrate Limb Bud

In the development of organs, multiple morphogen sources are often involved, and interact with each other. For example, the apical ectodermal ridge (AER) and the zone of polarizing activity (ZPA) are major morphogen sources in the limb bud formation of vertebrates. Fgf expression in the AER and Shh expression in the ZPA are maintained by their positive feedback regulation mediated by diffusible molecules, FGF and SHH. A recent experimental observation suggests that the FGF-signal regulates the Shh expression in a feed-forward manner with activation and repression regulatory pathways. We study the coupled dynamics of Shh expression in the ZPA and Fgf expression in the AER, and the relationship of the relative position between AER and ZPA. We first show that with the feed-forward regulation only, the peak of ZPA activity can be formed distant from the AER as observed experimentally. Then, we clarify that the robustness of the ZPA spatial pattern to changes in system parameters is enhanced by adding the feedback regulation between the AER and the ZPA. Furthermore, sensitivity analysis shows that there exists the optimal feedback strength where the robustness is the most improved.