نتایج جستجو برای: nucleus raphe magnus

تعداد نتایج: 114802  

2009
Ajay Khorana Henri Servaes

We examine the relationship between portfolio manager ownership, closed-end fund premiums/discounts, and future returns. Using a sample of 592 closed-end funds in 2005, representing 95% of the entire industry, we find that fund manager ownership has a positive and economically significant impact on fund premiums and future fund performance measured using both NAV and price returns. Furthermore,...

2011
Eric Zarahn Leeor Alon Sophia L. Ryan Ronald M. Lazar Magnus-Sebastian Vry Cornelius Weiller Randolph S. Marshall John W. Krakauer

Eric Zarahn, Leeor Alon, Sophia L. Ryan, Ronald M. Lazar, Magnus-Sebastian Vry, Cornelius Weiller, Randolph S. Marshall and John W. Krakauer The Neurological Institute, New York, NY 10032, USA, Department of Neurology, Columbia University College of Physicians and Surgeons, New York, NY 10032, USA, Department of Neurology, University of Freiburg and Department of Neurology, Johns Hopkins Univer...

بهزادی, ژیلا , مهدیزاده, مهدی , پاس بخش, پریچهر ,

In order to understand the function of mammalians serotonin system, we have to know the anatomical structure, because physiological changes are influenced through the anatomical changes. A number of thalamic nuclei are associated with functions known to be influenced by serotonergic input in brainstem, among them mediodorsal thalamic nucleus has relationship with limbic system and prefrontal co...

Journal: :The Onderstepoort journal of veterinary research 1982
I G Horak D G Meltzer V De Vos

The helminth burdens of 17 springbok from 2 localities in the Transvaal and of 4 springbok from the western Cape Province were determined. Eight of the animals from the Transvaal and the 4 from the Cape Province were also examined for arthropod parasites. In all, 26 helminth species, 5 species of ixodid ticks and 4 species of lice were recovered from the springbok. Of the helminths Dictyocaulus...

2013
Andreas Hüttemann Alexander Reutlinger John T. Roberts

John Earman and John T. Roberts advocate a challenging and radical claim regarding the semantics of laws in the special sciences: the statistical account. According to this account, a typical special science law “asserts a certain precisely defined statistical relation among well-defined variables” (Earman and Roberts 1999) and this statistical relation does not require being hedged by ceteris ...

Journal: :The American journal of Chinese medicine 2010
Kentaro Moritaka Jorge L Zeredo Mari Kimoto Fajar H Nasution Takafumi Hirano Kazuo Toda

A descending inhibitory mechanism from the periaqueductal gray (PAG) to the spinal cord through the nucleus raphe magnus (NRM) is strongly involved in endogenous analgesic system produced by acupuncture stimulation. In addition to the PAG to NRM system which descends in the medial pathway of the brain stem, the nucleus reticularis lateralis (NRL) situated in the lateral part of the brain stem i...

Journal: :Neuroscience and biobehavioral reviews 1994
J P Rosenfeld

This is a review of research aimed at elucidating how various opiate analgesia substrates in rat brain stem interact with one another to bring about opiate analgesia. The three substrates studied are the midbrain periaqueductal grey (PAG), the bulbar nucleus raphe magnus (RM), and the bulbar nucleus reticularis paragigantocellularis (PGC). The methods used in the reviewed studies are unique in ...

2003
Mats Persson

In order to get a more complete picture of how labor supply is affected by economic incentives, the effects on absenteeism and not just on contracted hours should be taken into account. In particular, absenteeism due to sick leave can be considerable. In this paper we examine whether the level of sick leave compensation affects sick leave behavior. Using time-series data for Sweden spanning a l...

Journal: :Journal of neurophysiology 2007
Kevin M Hellman Thaddeus S Brink Peggy Mason

In rats, opioids produce analgesia in large part by their effects on two cell populations in the medullary raphe magnus (RM). To extend our mechanistic understanding of opioid analgesia to the genetically tractable mouse, we characterized behavioral reactions and RM neural responses to opioid administration. d-Ala(2), N-Me-Phe(4)-Gly(5)ol-enkephalin, a mu-opioid receptor agonist, microinjected ...

Journal: :Journal of neurophysiology 1999
C G Leung P Mason

Neurons in the medullary raphe magnus (RM) that are important in the descending modulation of nociceptive transmission are classified by their response to noxious tail heat as ON, OFF, or NEUTRAL cells. Experiments in anesthetized animals demonstrate that RM ON cells facilitate and OFF cells inhibit nociceptive transmission. Yet little is known of the physiology of these cells in the unanesthet...

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