نتایج جستجو برای: ot

تعداد نتایج: 6534  

Journal: :American journal of physiology. Regulatory, integrative and comparative physiology 2011
Cleyde V Helena Ruth Cristancho-Gordo Arturo E Gonzalez-Iglesias Joël Tabak Richard Bertram Marc E Freeman

We have shown previously that an intravenous injection of oxytocin (OT) in ovariectomized (OVX) rats initiates a circadian rhythm of prolactin (PRL) secretion similar to that observed after cervical stimulation (CS). In this study, we investigated the pathway through which OT triggers the PRL rhythm. We first tested whether an intracerebroventricular injection of OT could trigger the PRL secret...

2014
Raghu Pullakhandam Ravindranadh Palika Sudershan Rao Vemula Kalpagam Polasa Sesikeran Boindala

BACKGROUND & OBJECTIVES Oxytocin (OT) injections to milch cattle for milk letdown have become a common practice amongst dairy farmers in India. Although there is no reported evidence, it is widely presumed that long term consumption of such milk leads to adverse health consequences. However, there is no information on the effect of exogenous OT injections on milk OT content and its stability du...

2010
Randall C. O’Reilly

Skill learning and instrumental conditioning have a long association with the behaviorist research program and are often thought of in terms of rote learning of simple stimulus–response (S–R) associations based on external rewards. These forms of learning have also been strongly associated with the striatum of the basal ganglia, with different striatal regions apparently making various differen...

2004
Dirk-Bart den Ouden

Since the early 1990s, Optimality Theory (OT) has quickly gained ground in phonology. Its main appeal lies in two characteristics: the focus on wellformedness of the output and the softness of constraints, where a constraint can be violated in order to satisfy more important requirements. A conspicuous characteristic of classic OT is that all constraints on the output should compete with each o...

Journal: :Biological psychiatry 2014
Bice Chini Marianna Leonzino Daniela Braida Mariaelvina Sala

Despite the accumulating evidence suggesting that the neuropeptide oxytocin (OT) plays a role in neuropsychiatric disorders characterized by social dysfunction, the influence of OT on the nonsocial aspects of learning and memory have been less investigated. To foster research in this area, we review the effects of OT on learning and memory in animal models and humans. In healthy animal models, ...

Journal: :Acta endocrinologica 1985
V Geenen J J Legros M T Hazée-Hagelstein F Louis-Kohn M J Lecomte-Yerna A Demoulin P Franchimont

We investigated the production of oxytocin (OT) and oxytocin-neurophysin (bNpI) by bovine granulosa cells cultured in presence of 10% foetal calf serum, a condition known to induce spontaneous luteinization of these cells. The production of immunoreactive OT was significantly higher in the cultures of granulosa cells harvested from large follicles than in those derived from small follicles. Chr...

Journal: :The American journal of physiology 1976
R A Raines M M LeWinter J W Covell

The right ventricular outflow tract (OT) is a functionally distinct area of the right ventricle. However, there is little information on the contrdingly, inflow tract (IT) and OT chords and right ventricular free wall segmental changes were measured with implanted ultrasound crystals. The timing and extent of shortening of IT and OT chords and free wall segments were determined both at rest and...

2013
Yuval Ishai Hemanta K. Maji Amit Sahai Jürg Wullschleger

An oblivious transfer (OT) protocol allows a receiver to obtain one of two bits held by a sender without revealing its selection. An OT combiner securely implements OT by using oracle access to n OT candidates of which at most t may be insecure. It is known that OT combiners exist when t < n/2. However, known constructions either invoke each candidate multiple times or alternatively require t t...

2011
Michael T. Bowen Dean S. Carson Adena Spiro Jonathon C. Arnold Iain S. McGregor

Previous studies have suggested that administration of oxytocin (OT) can have modulatory effects on social and anxiety-like behavior in mammals that may endure beyond the time of acute OT administration. The current study examined whether repeated administration of OT to male Wistar rats (n = 48) during a key developmental epoch (early adolescence) altered their physiology and behavior in later...

Journal: :Perspectives on psychological science : a journal of the Association for Psychological Science 2015
Gideon Nave Colin Camerer Michael McCullough

Behavioral neuroscientists have shown that the neuropeptide oxytocin (OT) plays a key role in social attachment and affiliation in nonhuman mammals. Inspired by this initial research, many social scientists proceeded to examine the associations of OT with trust in humans over the past decade. To conduct this work, they have (a) examined the effects of exogenous OT increase caused by intranasal ...

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