Renewal is defined as the recovery of an extinguished response when the contexts of extinction and recall differ. Prominent hippocampal activity during context-related extinction can predict renewal. Dopaminergic antagonism during extinction learning impaired extinction and reduced hippocampal activation, without affecting renewal. However, to what extent dopaminergic stimulation during extinct...

This paper addresses sources contributing to the differences in the degree of recovery from extinction observed with different renewal paradigms. In two lick suppression experiments with rats, we assessed the role of the associative status of the acquisition context in both the weakness of AAC renewal and the sometimes observed weaker renewal resulting from an ABC design relative to an ABA desi...

At present the world is experiencing an extraordinary rate of urbanization. India is also in a major phase of urbanization. Almost all Indian cities have grown up beyond their limits. Thus, the ecological footprint, which is the ‘area of wilderness of both land and sea needed to supply resources to a human population and needed to assimilate human waste’ of these cities is at the warning stage....

Physiological trade-offs mediated by limiting energy, resources or time constrain the simultaneous expression of major functions and can lead to the evolution of temporal separation between demanding activities. In birds, plumage renewal is a demanding activity, which accomplishes fundamental functions, such as allowing thermal insulation, aerodynamics and socio-sexual signaling. Feather renewa...

Purpose Taking the perspective of a start-up company, purpose this paper is to analyse resource renewal in heavy business networks. Design/methodology/approach The theoretical framework based on Industrial Network Approach and, especially, interaction framework, network settings and studies starting up basis for case study Swedish wind energy context. Findings Resource means replacing one resou...

The present study characterized renewal of sucrose-seeking behavior in rats (Experiment 1). The role of the dopamine subtype-2 (D(2)) receptors in mediating renewal of sucrose-seeking behavior also was examined (Experiment 2). Rats were trained to respond for sucrose pellets (45mg each) on a fixed-ratio 25 (Experiments 1 and 2) schedule of reinforcement in Context A. Following acquisition, rats...

This article explores the failure of urban renewal in Bombay city during the ®rst quarter of the twentieth century. It shows how colonial rule structured a class-driven process of uneven urban `improvements' that actually exacerbated the problems of congestion, bad housing and environmental blight. In this process, the new forces of modernity were selectively appropriated to accentuate the diff...

This paper studies a renewal reward process with fuzzy random interarrival times and rewards under the >-independence associated with any continuous Archimedean t-norm >. The interarrival times and rewards of the renewal reward process are assumed to be positive fuzzy random variables whose fuzzy realizations are >-independent fuzzy variables. Under these conditions, some limit theorems in mean...