Abstract Background Social isolation can be defined as the absence of social interactions, contacts, and relationships with family, friends, neighbors. According to some studies, was associated depressive symptoms. At least one out every five teenagers suffer from a diagnosable mental health problem that impairs their function. Saudi Arabia has significant adolescent population; however, there ...

The current study assesses the impact of coronavirus (COVID-19) pandemic on tourism workers’ health and well-being in Jordan by investigating threats, financial impacts, resources social isolation, depression personal control experienced workers during COVID-19 pandemic, how threats impacts affect well-being. A quantitative survey method was applied using a questionnaire. Data were collected fr...

Chapter 5 84 Social support has a positive influence on the course of a depression and social housing of rats could provide an animal model for studying the neurobiological mechanisms of social support. Male and female rats were subjected to chronic foot-shock stress for 3 weeks and pair-housing of rats was used to mimic social support. Rats were isolated or housed with a partner of the opposit...

Both the peripheral sympatho-adrenomedullary and central catecholaminergic systems are activated by various psycho-social and physical stressors. Catecholamine stores in the hypothalamus, hippocampus, adrenal glands, and heart auricles of long-term socially isolated (21 days) and control 3-month-old male Wistar rats, as well as their response to immobilization of all 4 limbs and head fixed for ...

ifa global ageing 2010 VOL. 6 No 2 Socially isolated older persons are difficult to find. Like other vulnerable populations, they tend to be invisible. Unfortunately, it takes a crisis to bring the issues of social isolation and vulnerability among older persons to the policy agenda. For example, thousands of older New Yorkers were left dangerously isolated immediately after the September 11th ...

In multiagent systems the capability of learning is important for an agent to behave appropriately in face of unknown opponents and a dynamic environment. From the system designer’s perspective, it is desirable if the agents can learn to coordinate towards socially optimal outcomes, while also avoiding being exploited by selfish opponents. To this end, we propose a novel gradient ascent based a...

It is axiomatic that spoken language is highly variable, and that variability can be observed at nearly every level of linguistic structure, from the acoustic instantiation of speech sounds to the the information structure of long stretches of spoken discourse. Many of the chapters in this volume discuss empirical and theoretical studies of the production of linguistic structures. A challenge t...

Allopregnanolone (ALLO), synthesized by pyramidal neurons, is a potent positive allosteric modulator of the action of GABA at GABA(A) receptors expressing specific neurosteroid binding sites. In the brain, ALLO is synthesized from progesterone by the sequential action of two enzymes: 5alpha-reductase type I (5alpha-RI) and 3alpha-hydroxysteroid dehydrogenase (3alpha-HSD). In the cortex, hippoca...

BACKGROUND The phenomena of basal hypercortisolism and of dexamethasone resistance have long intrigued biological psychiatrists, and much is still unknown as to the causes and consequences of such adrenocortical hyperactivity in various neuropsychiatric disorders. We have analyzed basal cortisol concentrations and adrenocortical responsiveness to dexamethasone in a population of wild baboons li...