scholarly journals Rumination as a Mediator of Chronic Stress Effects on Hypertension: A Causal Model

2012 ◽  
Vol 2012 ◽  
pp. 1-9 ◽  
Author(s):  
William Gerin ◽  
Matthew J. Zawadzki ◽  
Jos F. Brosschot ◽  
Julian F. Thayer ◽  
Nicholas J. S. Christenfeld ◽  
...  
Keyword(s):  
Chronic Stress ◽  
Mental Representation ◽  
Mental Representations ◽  
Stressful Event ◽  
Negative Cognitions ◽  
Stress Effects ◽  
Autonomic Activation ◽  
Underlying Mechanisms ◽  
Acute Physiological Response ◽  
Physiological Systems

Chronic stress has been linked to hypertension, but the underlying mechanisms remain poorly specified. We suggest that chronic stress poses a risk for hypertension through repeated occurrence of acute stressors (often stemming from the chronic stress context) that cause activation of stress-mediating physiological systems. Previous models have often focused on the magnitude of the acute physiological response as a risk factor; we attempt to extend this to address the issue ofduration of exposure. Key to our model is the notion that these acute stressors can emerge not only in response to stressors present in the environment, but also to mental representations of those (or other) stressors. Consequently, although the experience of any given stressor may be brief, a stressor often results in a constellation of negative cognitions and emotions that form a mental representation of the stressor. Ruminating about this mental representation of the stressful event can cause autonomic activation similar to that observed in response to the original incident, and may occur and persist long after the event itself has ended. Thus, rumination helps explain how chronic stress causes repeated (acute) activation of one’s stress-mediating physiological systems, the effects of which accumulate over time, resulting in hypertension risk.

Mental representation of economic crisis in Italian and Swiss samples 1The authors would like to thank Maurizio Mistri for his help in the construction of items. This research was supported by a grant from the Italian Murst (ex 40%).

2001 ◽  
Vol 60 (1) ◽  
pp. 11-14 ◽  
Author(s):  
Lucia Savadori ◽  
Eraldo Nicotra ◽  
Rino Rumiati ◽  
Roberto Tamborini
Keyword(s):  
Economic Crisis ◽  
Mental Representation ◽  
Mental Representations ◽  
Social Contexts ◽  
Raw Material ◽  
National Context ◽  
Cluster Procedure ◽  
Total N ◽  
Two Samples ◽  
Important Symptom

The content and structure of mental representation of economic crises were studied and the flexibility of the structure in different social contexts was tested. Italian and Swiss samples (Total N = 98) were compared with respect to their judgments as to how a series of concrete examples of events representing abstract indicators were relevant symptoms of economic crisis. Mental representations were derived using a cluster procedure. Results showed that the relevance of the indicators varied as a function of national context. The growth of unemployment was judged to be by far the most important symptom of an economic crisis but the Swiss sample judged bankruptcies as more symptomatic than Italians who considered inflation, raw material prices and external accounts to be more relevant. A different clustering structure was found for the two samples: the locations of unemployment and gross domestic production indicators were the main differences in representations.

Acute and chronic stress effects on performance in a forced-swim task

1984 ◽  
Vol 42 (2) ◽  
pp. 99-119 ◽  
Author(s):  
Christopher R. Prince ◽  
Hymie Anisman
Keyword(s):  
Chronic Stress ◽  
Stress Effects ◽  
Acute And Chronic Stress ◽  
Forced Swim

Chronic stress impacts the cardiovascular system: animal models and clinical outcomes

2015 ◽  
Vol 308 (12) ◽  
pp. H1476-H1498 ◽  
Author(s):  
Saeid Golbidi ◽  
Jefferson C. Frisbee ◽  
Ismail Laher
Keyword(s):  
Cardiovascular Diseases ◽  
Animal Models ◽  
Chronic Stress ◽  
Laboratory Findings ◽  
Important Group ◽  
Stress Markers ◽  
Random Fashion ◽  
Human Stress ◽  
Underlying Mechanisms ◽  
Psychosomatic Diseases

Psychological stresses are associated with cardiovascular diseases to the extent that cardiovascular diseases are among the most important group of psychosomatic diseases. The longstanding association between stress and cardiovascular disease exists despite a large ambiguity about the underlying mechanisms. An array of possibilities have been proposed including overactivity of the autonomic nervous system and humoral changes, which then converge on endothelial dysfunction that initiates unwanted cardiovascular consequences. We review some of the features of the two most important stress-activated systems, i.e., the humoral and nervous systems, and focus on alterations in endothelial function that could ensue as a result of these changes. Cardiac and hematologic consequences of stress are also addressed briefly. It is likely that activation of the inflammatory cascade in association with oxidative imbalance represents key pathophysiological components of stress-induced cardiovascular changes. We also review some of the commonly used animal models of stress and discuss the cardiovascular outcomes reported in these models of stress. The unique ability of animals for adaptation under stressful conditions lessens the extrapolation of laboratory findings to conditions of human stress. An animal model of unpredictable chronic stress, which applies various stress modules in a random fashion, might be a useful solution to this predicament. The use of stress markers as indicators of stress intensity is also discussed in various models of animal stress and in clinical studies.

Chronic Stress Effects on Adrenocortical Responsiveness in Young and Aged Rats

1973 ◽  
Vol 11 (1) ◽  
pp. 1-10 ◽  
Author(s):  
G.D. Riegle
Keyword(s):  
Chronic Stress ◽  
Aged Rats ◽  
Stress Effects

Chronic stress effects on adenine nucleotide hydrolysis in the blood serum and brain structures of rats

2002 ◽  
Vol 74 (1) ◽  
pp. 181-186 ◽  
Author(s):  
Iraci Lucena S Torres ◽  
Andreia Buffon ◽  
Giovana Dantas ◽  
Cristina Ribas Fürstenau ◽  
Ana Elisa Böhmer ◽  
...  
Keyword(s):  
Blood Serum ◽  
Chronic Stress ◽  
Adenine Nucleotide ◽  
Brain Structures ◽  
Nucleotide Hydrolysis ◽  
Stress Effects

scholarly journals Intentionality: A philosophical-cognitive approach to mental representations

2014 ◽  
Vol 26 (39) ◽  
pp. 819
Author(s):  
Cleverson Leite Bastos ◽  
Tomas Rodolfo Drunkenmolle
Keyword(s):  
Cognitive Psychology ◽  
Mental Representation ◽  
Philosophy Of Mind ◽  
Mental Representations ◽  
Hard Core ◽  
Explanatory Models ◽  
Cognitive Approach ◽  
Clear Cut ◽  
Points Of View ◽  
Definition Of

This article critically analyses the notion of intentionality from several philosophical cognitive points of view. The authors argue that the notion of mental representation in the wider sense and intentionality in the narrower sense remains elusive despite accommodated paradoxes, improved semantic precision and more sophisticated strategies in dealing with intentionality. We will argue that different approaches to intentionality appear to be coherent in their inferences. However, most of them become contradictory and mutually exclusive when juxtaposed and applied to borderline questions. While the explanatory value of both philosophy of mind as well as cognitive psychology should not be underestimated, we must note that not even hard-core neuroscience has been able to pin point what is going on in our minds, let alone come up with a clear cut explanation how it works or a definition of what thought really is. To date, however, intentionality is the best of all explanatory models regarding mental representations.

The Effects of Auditors' Accessibility to “Tone at the Top” Knowledge on Audit Judgments

2014 ◽  
Vol 26 (2) ◽  
pp. 73-96 ◽  
Author(s):  
Regan N. Schmidt
Keyword(s):  
Mental Representation ◽  
Decision Aid ◽  
Audit Quality ◽  
Mental Representations ◽  
Data Availability ◽  
Control Environment ◽  
Audit Process ◽  
Mediation Analyses ◽  
Fraud Risk ◽  
Tone At The Top

ABSTRACT: This study examines how external auditors' accessibility to “tone at the top” knowledge impacts subsequent audit judgments. To examine this relationship, a decision aid is investigated that differentially facilitates the auditors' retrieval of “tone at the top” evidence from memory. Results of an experiment indicate that, holding the client's “tone at the top” constant, the structure of a control environment decision aid influences the auditors' mental representation of the “tone at the top.” Further, favorable “tone at the top” mental representations transfer to induce relatively favorable control environment and fraud risk assessments, and greater reliance on management's explanation for variances detected in analytical procedures. Mediation analyses identify the control environment assessment as a mediator between the influenced mental representation and the subsequent fraud risk and analytical procedure judgments. The results of the paper underscore the importance of how auditors develop their “tone at the top” mental representations, the influence of these mental representations on subsequent audit judgments, and the stage in the audit process where interventions can improve audit quality. Data Availability: Contact the author.

Producing a Mental Representation of a Cup of Sake

2019 ◽  
pp. 430-448
Author(s):  
Hiroki Fukushima
Keyword(s):  
Experimental Method ◽  
Mental Representation ◽  
Mental Representations ◽  
Visual Image ◽  
The Other ◽  
Experimental Methodology ◽  
Visual Images ◽  
Other Hand ◽  
Average Person ◽  
Supporting Tool

In this chapter, methodologies for producing a mental representation of a cup of sake are introduced. Mental representations of taste are often vague and fuzzy in comparison to audio or visual images. On the other hand, some individuals, such as sommeliers or tasters of sake, are able to readily formulate a representation of the taste they experience. How can the average person produce words or other types of mental representations in such a situation? In this chapter, the author presents three methodologies for eliciting mental representations of taste: a new supporting tool for verbalizing an image of taste, an experimental method for testing a verbal and visual image for taste, and an experimental methodology for producing a free drawing representation of a cup of sake.

scholarly journals Variation is information: Analyses of variation across items, participants, time, and methods in metalinguistic judgment data

Linguistics ◽  
2020 ◽  
Vol 58 (1) ◽  
pp. 37-81
Author(s):  
Véronique Verhagen ◽  
Maria Mos ◽  
Joost Schilperoord ◽  
Ad Backus
Keyword(s):  
Mental Representation ◽  
Native Speakers ◽  
Mental Representations ◽  
Judgment Task ◽  
Linguistic Knowledge ◽  
Prepositional Phrases ◽  
Linguistic Representations ◽  
Different Types ◽  
Source Of Information ◽  
Judgment Data

AbstractIn a usage-based framework, variation is part and parcel of our linguistic experiences, and therefore also of our mental representations of language. In this article, we bring attention to variation as a source of information. Instead of discarding variation as mere noise, we examine what it can reveal about the representation and use of linguistic knowledge. By means of metalinguistic judgment data, we demonstrate how to quantify and interpret four types of variation: variation across items, participants, time, and methods. The data concern familiarity ratings assigned by 91 native speakers of Dutch to 79 Dutch prepositional phrases such as in de tuin ‘in the garden’ and rond de ingang ‘around the entrance’. Participants performed the judgment task twice within a period of one to two weeks, using either a 7-point Likert scale or a Magnitude Estimation scale. We explicate the principles according to which the different types of variation can be considered information about mental representation, and we show how they can be used to test hypotheses regarding linguistic representations.

scholarly journals Aging increases vulnerability to stress-induced depression via upregulation of NADPH oxidase in mice

2020 ◽  
Vol 3 (1) ◽  
Author(s):  
Jung-Eun Lee ◽  
Hye-Jin Kwon ◽  
Juli Choi ◽  
Ji-Seon Seo ◽  
Pyung-Lim Han
Keyword(s):  
Oxidative Stress ◽  
Nadph Oxidase ◽  
Chronic Stress ◽  
Brain Aging ◽  
Aged Mice ◽  
Upstream Regulator ◽  
Underlying Mechanisms ◽  
Old Mice ◽  
And Oxidative Stress ◽  
Young Mice

AbstractBrain aging proceeds with cellular and molecular changes in the limbic system. Aging-dependent changes might affect emotion and stress coping, yet the underlying mechanisms remain unclear. Here, we show aged (18-month-old) mice exhibit upregulation of NADPH oxidase and oxidative stress in the hippocampus, which mirrors the changes in young (2-month-old) mice subjected to chronic stress. Aged mice that lack p47phox, a key subunit of NADPH oxidase, do not show increased oxidative stress. Aged mice exhibit depression-like behavior following weak stress that does not produce depressive behavior in young mice. Aged mice have reduced expression of the epigenetic factor SUV39H1 and its upstream regulator p-AMPK, and increased expression of Ppp2ca in the hippocampus—changes that occur in young mice exposed to chronic stress. SUV39H1 mediates stress- and aging-induced sustained upregulation of p47phox and oxidative stress. These results suggest that aging increases susceptibility to stress by upregulating NADPH oxidase in the hippocampus.

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