Stimulation Seeking Throughout Seven Days of Sensory Deprivation

1967 ◽  
Vol 25 (1) ◽  
pp. 261-271 ◽  
Author(s):  
Seward Smith ◽  
Thomas I. Myers ◽  
Eugene Johnson

60 volunteer Naval enlisted men participated in a study of 7-day, individual isolation. 40 Ss lived in small, dark, quiet rooms with little to do (SD). The other 20 served in a live-in-the-lab control group (C) with ad lib. access to lights, recreational materials, and intercom conversation with another C S if mutually desired. 19 SD Ss, but only 1 C S, requested early release. Pre-, during-, and post-isolation tests were given. In a test of stimulation seeking, boring stock reports could be heard during a 1-hr. period on each of Days 1, 4, and 7 of isolation. SD Ss selected to listen significantly more than Cs on Days 4 and 7, with the differences increasing over time. Day 1 listening (about 6 hr. after isolation began) predicted who would later request release. In the discussion, currently available stimulation-seeking data are summarized and integrated.

2017 ◽  
Vol 25 (4) ◽  
pp. 319-340 ◽  
Author(s):  
Nikolina M. Duvall Antonacopoulos

This longitudinal study examined the effect of acquiring a dog using both an indirect and a direct measure of loneliness. The loneliness levels of 31 adults who acquired a dog and a control group of 35 non-dog guardians (non-dog owners) were assessed at baseline and 8 months. Results revealed that changes in loneliness over time differed for the two groups when loneliness was assessed through a 1-item direct measure. Participants who acquired a dog experienced reduced loneliness levels from baseline to 8 months and were less lonely at 8 months than non-dog guardians, even though the two groups did not differ at baseline. On the other hand, when loneliness was assessed through a multi-item indirect measure, acquiring a dog had no effect on loneliness. These results highlight the importance of the type of measure used to assess loneliness when examining changes in loneliness following the acquisition of a companion animal.


2008 ◽  
Vol 35 (6) ◽  
pp. 520 ◽  
Author(s):  
Graeme Coulson ◽  
Christopher D. Nave ◽  
Geoff Shaw ◽  
Marilyn B. Renfree

Overabundant populations of kangaroos pose substantial management problems in small parks on the fringe of urban areas in Australia. Translocation is impractical and culling is often not publicly acceptable, but fertility control offers an acceptable alternative. One potential contraceptive is levonorgestrel, which provides effective long-term contraception in women, and prevents births in some marsupials for up to five years. We evaluated the long-term efficacy of levonorgestrel in free-ranging eastern grey kangaroos (M. giganteus) at two sites in Victoria, Australia. We trapped 25 adult females at one site (Portland Aluminium), treating 18 with two subcutaneous 70-mg levonorgestrel implants and seven with control (inert) implants. We darted 25 adult females at the other site (Woodlands Historic Park), treating all with two 70-mg levonorgestrel implants. We monitored the reproductive status of the kangaroos, as indicated by the obvious presence of a pouch young, in spring each year for up to seven years. In the first three years at Portland, 81–86% of levonorgestrel-treated females were infertile, compared with 12–29% in the control group, but the effectiveness of fertility control declined over time. At this site, the proportions of treated females breeding in the fourth, fifth, sixth and seventh years of the trial were 36%, 50%, 67% and 100% respectively. Fecundity at Woodlands was similar. Although this protocol achieved fertility control for several years, it was likely that more than one treatment or a higher dose rate would be required for effective fertility control in this long-lived species.


Author(s):  
Abdulvahap Akyigit ◽  
Erol Keleş ◽  
Yavuz Sultan Selim Yıldırım ◽  
Turgut Karlıdağ ◽  
Orkun Eroglu ◽  
...  

Abstract Background Numbness of the nasal skin is one of the most common complications following rhinoplasty. Objectives The present study investigated postoperative changes in nasal skin sensation among primary and revision rhinoplasty patients and evaluated the recovery outcomes for both groups. Methods A prospective, randomized blinded study was undertaken involving 100 primary and 34 revision open rhinoplasty patients and 50 volunteers as control group. Semmes-Weinstein monofilament testing was performed on 7 designated nasal points preoperatively and at postoperative months 1, 3, 6, and 12, and the results were evaluated. Results Among the primary rhinoplasty patients, the change in reduced sensation on pressure to the tip and infratip over time was significant (P < 0.001), whereas there was no statistically significant difference for the other points. Among the revision rhinoplasty patients, the change in reduced sensation on pressure to the tip, infratip, and base of columella over time was significant (P < 0.001), whereas there was no statistically significant difference at the other points. In a comparison of the revision and primary rhinoplasty patients at all timepoints, a statistically significant reduction in sensation was noted on the application of pressure to all points in the revision patient group (P < 0.001). Conclusions This study found that the sense of touch on pressure returned to normal, aside from at the tip and infratip, by the end of month 12 in primary rhinoplasty patients. The revision rhinoplasty patients, in turn, were observed to have reduced sensation on pressure by the end of month 12, with the greatest reduction at the tip, infratip, and columellar base. Level of Evidence: 3


2019 ◽  
Vol 9 (4) ◽  
pp. 4543-4547
Author(s):  
M. Pirzadeh ◽  
M. Aminlari

Pomegranate has drawn the attention of dieticians and medicinal chemists due to its bioactive components. Natural coatings increase the shelf life of such agriculture products and reduce the risks associated with the use of chemical preservatives. Hence, we examined the effects of aloe vera coating on the pomegranate fruit. Aloe vera gel coating was utilized in three proportions of 25%, 33%, and 50%, and its effects on the pomegranate seeds were compared with a control sample. Experiments including moisture reduction, weight loss, sugar content, sensory properties, antioxidant capacity, and microbial analysis were performed over a period of 4 weeks. Results revealed that the percentage of moisture reduction in 50% aloe vera coated sample was lower than in other groups, and the mildew and yeast in these samples were less than in the other groups. However, the 50% aloe vera gel showed the highest level of contamination, over time. Furthermore, the 50% aloe vera gel showed higher sugar content, and over time the amount of sugar reduction in the 50% aloe vera was lower. Additionally, the percentage of weight loss in samples coated with aloe vera was lower than the control group, and in the 50% aloe vera group it was less than in the other groups.


Author(s):  
Melanie K. T. Takarangi ◽  
Deryn Strange

When people are told that their negative memories are worse than other people’s, do they later remember those events differently? We asked participants to recall a recent negative memory then, 24 h later, we gave some participants feedback about the emotional impact of their event – stating it was more or less negative compared to other people’s experiences. One week later, participants recalled the event again. We predicted that if feedback affected how participants remembered their negative experiences, their ratings of the memory’s characteristics should change over time. That is, when participants are told that their negative event is extremely negative, their memories should be more vivid, recollected strongly, and remembered from a personal perspective, compared to participants in the other conditions. Our results provide support for this hypothesis. We suggest that external feedback might be a potential mechanism in the relationship between negative memories and psychological well-being.


Author(s):  
Avi Max Spiegel

This chapter seeks to understand how Islamist movements have evolved over time, and, in the process, provide important background on the political and religious contexts of the movements in question. In particular, it shows that Islamist movements coevolve. Focusing on the histories of Morocco's two main Islamist movements—the Justice and Spirituality Organization, or Al Adl wal Ihsan (Al Adl) and the Party of Justice and Development (PJD)—it suggests that their evolutions can only be fully appreciated if they are relayed in unison. These movements mirror one another depending on the competitive context, sometimes reflecting, sometimes refracting, sometimes borrowing, sometimes adapting or even reorganizing in order to keep up with the other.


2020 ◽  
Vol 65 (4) ◽  
pp. 401-422
Author(s):  
Estelle Variot
Keyword(s):  
The One ◽  

"Etymological, Lexical and Semantic Correspondences in the Process of Feminization of Professional Names, Trades and Activities in French and Romanian Societies. The feminization of thought represented by language and of its varieties in the Roman World has allowed to highlight some convergences that come from a common linguistic heritage, often from Greek and Latin and some hesitation about adapting society to its realities. The feminization of some words which comes from an ancient process illustrates on the one hand the potential of the language and on the other hand some constraints sometimes linked to the society itself, which creates transitional periods, between matching grammatical correction and the evolution of linguistic uses over time. The possibilities of lexical enrichment (internal creation or loan) show the means available in French and Romanian and some convergences in the area of derivation, of lexical units and their etymologies. The grammatical perspective and word constructing methods make it possible to give keys for the feminization of names of trades or professions. Likewise, recording entries in the lexicon, their evolution, their assimilation or sometimes their forgetfulness, for the benefit of new constructions highlight the existence of objective and subjective criteria which teach us a lot about society as a whole. Keywords: feminization of professions, internal and external enrichment, suffixal match, use of words, grammar, lexicon, French and Romanian."


2010 ◽  
Vol 1 (1) ◽  
pp. 1-19
Author(s):  
Ahmed Akgunduz

AbstractIslamic Law is one of the broadest and most comprehensive systems of legislation in the world. It was applied, through various schools of thought, from one end of the Muslim world to the other. It also had a great impact on other nations and cultures. We will focus in this article on values and norms in Islamic law. The value system of Islam is immutable and does not tolerate change over time for the simple fact that human nature does not change. The basic values and needs (which can be called maṣlaḥa) are classified hierarchically into three levels: (1) necessities (Ḍarūriyyāt), (2) convenience (Ḥājiyyāt), and (3) refinements (Kamāliyyāt=Taḥsīniyyāt). In Islamic legal theory (Uṣūl al‐fiqh) the general aim of legislation is to realize values through protecting and guaranteeing their necessities (al-Ḍarūriyyāt) as well as stressing their importance (al‐ Ḥājiyyāt) and their refinements (taḥsīniyyāt).In the second part of this article we will draw attention to Islamic norms. Islam has paid great attention to norms that protect basic values. We cannot explain all the Islamic norms that relate to basic values, but we will classify them categorically. We will focus on four kinds of norms: 1) norms (rules) concerned with belief (I’tiqādiyyāt), 2) norms (rules) concerned with law (ʿAmaliyyāt); 3) general legal norms (Qawā‘id al‐ Kulliyya al‐Fiqhiyya); 4) norms (rules) concerned with ethics (Wijdāniyyāt = Aḵlāqiyyāt = Ādāb = social and moral norms).


Relay Journal ◽  
2018 ◽  
pp. 360-381
Author(s):  
Gordon Myskow ◽  
Phillip A. Bennett ◽  
Hisako Yoshimura ◽  
Kyoko Gruendel ◽  
Takuto Marutani ◽  
...  

The distinction between Cooperative and Collaborative Learning approaches is not a clear one. Some use the terms interchangeably while others consider Cooperative Learning to be a type of Collaborative Learning. Still others clearly differentiate between them, characterizing Cooperative Learning as more highly structured in its procedures, involving a great deal of intervention by the teacher to plan and orchestrate group interactions. Collaborative Learning, on the other hand, presupposes some degree of learner autonomy-that groups can work effectively toward shared goals and monitor their own progress. This paper takes the view that the distinction between Cooperative and Collaborative Learning is a useful one and that both approaches can play valuable roles in fostering autonomous interaction. It argues that while Collaborative Learning formations may be the ultimate goal for teachers wishing to develop learner autonomy, Cooperative Learning is a valuable means for modeling the skills and abilities to help students get there. The discussion begins with an overview of the two approaches, focusing on their implementation in the Japanese educational context. It then presents seven highly structured Cooperative Learning activities and shows how they can be modified and extended over time to encourage more autonomous interaction.


2017 ◽  
Vol 68 (2) ◽  
pp. 323-327
Author(s):  
Cristian Levente Giuroiu ◽  
Maria Vataman ◽  
Gabriel Melian ◽  
Dragos Bularda ◽  
Ludmila Lozneanu ◽  
...  

The study aimed to assess the number, localization and distribution of interleukin 6 (IL-6) positive cells in healthy pulp, acute and chronic pulpitis. The study group included 48 patients aged between 18-72, treated in University of Medicine and Pharmacy Grigore T. Popa Iasi, Romania. The pulpectomy was performed on 42 patients diagnosed with acute and chronic pulpitis. The other 6 patients, without signs of dental caries or periodontal disease, were submitted to extractions of teeth for orthodontic purposes, with pulpectomy performed before extraction. The pulp samples were examined with optic microscope. The detection and assessment of IL-6 were performed using immunohistochemical technique. Data were statistically analysed using non-parametric tests. According to morphopathological criteria, 42.85% were classified as acute pulpitis and 57.14% as chronic pulpitis. The pulp samples in control group were not associated with IL-6 positive cells. The analysis of all samples with acute and chronic pulpitis identified 73.80% samples with IL-6 and 26.20% associated with the absence of IL-6. The highest frequency of IL-6 positive cells was recorded in rich-cell zone of crown dental pulp. The systemic distribution of IL-6 positive cells was mostly diffused without well-defined orientation. IL-6 release in acute and chronic pulpitis is significantly higher comparing with healthy pulp tissue.


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