DOPAMINERGIC MODULATION OF EFFORT-RELATED CHOICE BEHAVIOR AS ASSESSED BY A PROGRESSIVE RATIO CHOW FEEDING CHOICE TASK: PHARMACOLOGICAL STUDIES AND THE ROLE OF INDIVIDUAL DIFFERENCES.

Dopaminergic modulation of effort-related choice behavior as assessed by a progressive ratio chow feeding choice task: pharmacological studies and the role of individual differences.

Mesolimbic dopamine (DA) is involved in behavioral activation and effort-related processes.Rats with impaired DA transmission reallocate their instrumental behavior away from food-reinforced tasks with high response requirements, and instead select less effortful food-seeking behaviors.In the present study, the effects of several drug treatments we

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Penalty function method for geometrically nonlinear buckling analysis of imperfect truss with multi-freedom constraints based on mixed FEM

This paper is concerned with the approach to implementing the Penalty function method for imposing multi-freedom constraints in geometrically nonlinear analysis of imperfect trusses based on mixed finite element formulation.Using aquarium decor a finite element model based on displacement formulation, it is required to incorporate both the dependen

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Wild-type measles virus is intrinsically dual-tropic

Measles is a highly contagious disease that causes temporary and severe immunosuppression in patients.Signaling lymphocyte activation molecule (SLAM) expressed on cells of the immune system functions as a receptor for measles virus (MV).In addition to SLAM, vaccine strains of MV also use a ubiquitously expressed complement regulatory protein, CD46,

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