Laboratory Studies of Psychological Stress

1974 ◽  
Vol 5 (4) ◽  
pp. 575-585 ◽  
Author(s):  
Paula Patkai
Keyword(s):  
Psychological Stress ◽  
Adaptive Functioning ◽  
Affective State ◽  
Physiological Arousal ◽  
Laboratory Studies ◽  
Response Side ◽  
Stimulus Side

This paper reviews current methods of studying psychological stress in contrived settings. Stress may be operationally defined in terms of stimuli, responses or both. On the stimulus side, types of stressors are classified on the basis of stimulus characteristics or kinds of threat involved. On the response side, various indicators of stress are discussed including measures of changes in affective state, adaptive functioning and physiological arousal.

Psychological Stress Is Associated With Heightened Physiological Arousal During NREM Sleep in Primary Insomnia

2007 ◽  
Vol 5 (3) ◽  
pp. 178-193 ◽  
Author(s):  
Martica Hall ◽  
Julian F. Thayer ◽  
Anne Germain ◽  
Douglas Moul ◽  
Raymond Vasko ◽  
...  
Keyword(s):  
Psychological Stress ◽  
Nrem Sleep ◽  
Physiological Arousal ◽  
Primary Insomnia

Temporal Relations and Meaningfulness in Paired-Associate Learning

1965 ◽  
Vol 17 (2) ◽  
pp. 491-497 ◽  
Author(s):  
Donald J. Mueller ◽  
Robert M. W. Travers
Keyword(s):  
Paired Associate ◽  
Paired Associate Learning ◽  
Associate Learning ◽  
Response Side ◽  
Paired Associates ◽  
Present Procedure ◽  
Response Meaningfulness ◽  
Stimulus Side ◽  
High Stimulus ◽  
Anticipation Method

Each of 34 Ss was presented with a list of 12 paired associates which were arranged according to high-low or low-high stimulus and response meaningfulness and also in a simultaneous or sequential time relationship. Meaningfulness level on the stimulus side of the dyad rather than on the response side was found to be more crucial for learning, and significantly more learning occurred also when the dyads were presented in the simultaneous condition. The findings were discussed in terms of both association theory and the differences between the present procedure and the conventional anticipation method.

Paired-Associate Learning and Free Recall of Nouns as a Function of Concreteness, Specificity, Imagery, and Meaningfulness

1967 ◽  
Vol 20 (1) ◽  
pp. 239-245 ◽  
Author(s):  
Allan Paivio
Keyword(s):  
Free Recall ◽  
Factorial Design ◽  
Paired Associate ◽  
Paired Associate Learning ◽  
Auditory Presentation ◽  
Associate Learning ◽  
Response Side ◽  
Positive Effects ◽  
Mediate Response ◽  
Stimulus Side

Abstractness-concreteness and generality-specificity of words were simultaneously varied in a factorial design on the stimulus and response sides of paired-associate lists constructed from 96 nouns. The analysis of recall scores from the auditory presentation of 2 alternating study trials and recall trials revealed significant ( p < .001) effects of both variables on the stimulus side of pairs. A smaller effect on the response side was significant ( p < .05) only in the case of specificity. A second experiment showed positive effects ( p < .001) of both concreteness and specificity on free recall. Mean scores were also available for the nouns on their rated capacity to evoke sensory images ( I) and on their meaningfulness ( m). A correlational analysis indicated that, of the attributes involved, I correlated most highly with learning scores. Furthermore, consistent with the hypothesis that stimulus-evoked imagery can mediate response recall, the superiority of I was greatest when the items served as stimulus terms in PA learning.

Occupational Stress

2011 ◽  
Vol 5 (6) ◽  
pp. 486-493 ◽  
Author(s):  
Chun-Jung Huang ◽  
Edmund O. Acevedo
Keyword(s):  
Cardiovascular Disease ◽  
Law Enforcement ◽  
Occupational Stress ◽  
Psychological Stress ◽  
Police Officers ◽  
Stress Hormones ◽  
Overweight And Obesity ◽  
Laboratory Studies ◽  
Fitness Level ◽  
Cytokine Responses

Occupational stress can affect physiological and psychological homeostasis. In addition, the occupational challenges associated with firefighting and law enforcement have been linked to increased mortality ratios for ischemic heart disease when compared with other population cohorts. Laboratory studies have shown that the exacerbation of stress hormones (eg, catecholamines) following dual challenge (physical and psychological stress) may affect immune system responses, which may partially explain the link between cardiovascular disease and inflammation. Physical fitness has been shown to attenuate both cardiovascular and inflammatory cytokine responses following physical and/or psychological stress; however, criteria for safe and effective occupation-specific fitness levels have not been established. In addition, firefighters and police officers have high overweight and obesity rates, which also contribute significantly to the development of cardiovascular disease. Future investigation on the possible interaction (additive or synergistic) of obesity and psychological stress on the development of cardiovascular diseases in these professions is warranted, and a criterion for fitness level should be established for safe and effective participation in occupation-related activities.

scholarly journals Are Physical Activities Associated With Perceived Stress? The Evidence From the China Health and Nutrition Survey

2021 ◽  
Vol 9 ◽  
Author(s):  
Bing Cao ◽  
Yuxiao Zhao ◽  
Zhongyu Ren ◽  
Roger S. McIntyre ◽  
Kayla M. Teopiz ◽  
...  
Keyword(s):  
Physical Activity ◽  
Psychological Stress ◽  
Perceived Stress ◽  
Affective State ◽  
High Stress ◽  
Nutrition Survey ◽  
Low Intensity ◽  
Health And Nutrition ◽  
Time In Bed ◽  
Activity Preferences

Psychological stress is a negative affective state. The association between physical activity and psychological stress was commonly reported in previous researches. Few published studies with large sample sizes have explored such an association in Chinese population. The current research aims to assess the association between perceived stress and physical activity preferences, as well as the association between risk of high perceived stress and physical activity behaviors (e.g., sports-, transport-, occupational-related physical activity, sedentary activities and time in bed). The data were collected from the China Health and Nutrition Survey (CHNS) in 2015. Generalized linear models and logistic regression models were used to explore the association between perceived stress and physical activity. In total, 11,066 participants were included in the current analysis. For physical activity preferences, we found that “like” preference of all six mentioned domains of activities contributed to lower perceived stress (i.e., lower perceived stress scale −14 score, all β &lt; 0 and p &lt; 0.05). For physical activity behaviors, the results indicated that none/low intensity physical activity behaviors (e.g., sports-, occupational- related, sedentary) were associated with risk of high perceived stress, except that low intensity of transport-related activities seemed to be protective from high stress. However, the association between intensity of physical activity behaviors and perceived stress was not simply the higher the better. High intensity of all these physical activity behaviors was also associated with high perceived stress. Our findings suggest that positive preferences and moderate physical activity behaviors were associated with low perceived stress. The findings herein highlight the effect of regulating physical activity on perceived stress, as well as inform potential strategies to reduce psychological stress.

Hydrogen Cyanide Polymers from the Impact of Comet P/Shoemaker-Levy 9 on Jupiter

1997 ◽  
Vol 161 ◽  
pp. 179-187
Author(s):  
Clifford N. Matthews ◽  
Rose A. Pesce-Rodriguez ◽  
Shirley A. Liebman
Keyword(s):  
Amino Acids ◽  
Solar System ◽  
Hydrogen Cyanide ◽  
Nitrogen Heterocycles ◽  
Laboratory Studies ◽  
Heterogeneous Solids ◽  
The Many ◽  
Comet Halley ◽  
The Impact ◽  
By Products

AbstractHydrogen cyanide polymers – heterogeneous solids ranging in color from yellow to orange to brown to black – may be among the organic macromolecules most readily formed within the Solar System. The non-volatile black crust of comet Halley, for example, as well as the extensive orangebrown streaks in the atmosphere of Jupiter, might consist largely of such polymers synthesized from HCN formed by photolysis of methane and ammonia, the color observed depending on the concentration of HCN involved. Laboratory studies of these ubiquitous compounds point to the presence of polyamidine structures synthesized directly from hydrogen cyanide. These would be converted by water to polypeptides which can be further hydrolyzed to α-amino acids. Black polymers and multimers with conjugated ladder structures derived from HCN could also be formed and might well be the source of the many nitrogen heterocycles, adenine included, observed after pyrolysis. The dark brown color arising from the impacts of comet P/Shoemaker-Levy 9 on Jupiter might therefore be mainly caused by the presence of HCN polymers, whether originally present, deposited by the impactor or synthesized directly from HCN. Spectroscopic detection of these predicted macromolecules and their hydrolytic and pyrolytic by-products would strengthen significantly the hypothesis that cyanide polymerization is a preferred pathway for prebiotic and extraterrestrial chemistry.

Associations Between Self-Report of Emotional State and the EEG Patterns in Affective Disorders Patients

2010 ◽  
Vol 24 (1) ◽  
pp. 33-40 ◽  
Author(s):  
Miroslaw Wyczesany ◽  
Jan Kaiser ◽  
Anton M. L. Coenen
Keyword(s):  
State Energy ◽  
Emotional State ◽  
Spectral Power ◽  
Bipolar Affective Disorder ◽  
Affective State ◽  
Manic Episode ◽  
High Energy ◽  
Self Report ◽  
Major Depressive ◽  
High Tension

The study determines the associations between self-report of ongoing emotional state and EEG patterns. A group of 31 hospitalized patients were enrolled with three types of diagnosis: major depressive disorder, manic episode of bipolar affective disorder, and nonaffective patients. The Thayer ADACL checklist, which yields two subjective dimensions, was used for the assessment of affective state: Energy Tiredness (ET) and Tension Calmness (TC). Quantitative analysis of EEG was based on EEG spectral power and laterality coefficient (LC). Only the ET scale showed relationships with the laterality coefficient. The high-energy group showed right shift of activity in frontocentral and posterior areas visible in alpha and beta range, respectively. No effect of ET estimation on prefrontal asymmetry was observed. For the TC scale, an estimation of high tension was related to right prefrontal dominance and right posterior activation in beta1 band. Also, decrease of alpha2 power together with increase of beta2 power was observed over the entire scalp.

Emotional Reactivity to Visual Content as Revealed by ERP Component Clustering

2015 ◽  
Vol 29 (4) ◽  
pp. 135-146 ◽  
Author(s):  
Miroslaw Wyczesany ◽  
Szczepan J. Grzybowski ◽  
Jan Kaiser
Keyword(s):  
Emotional Reactivity ◽  
Brain Activity ◽  
Affective State ◽  
Occipital Lobe ◽  
Stimulus Onset ◽  
Emotional States ◽  
Neural Basis ◽  
Temporoparietal Junction ◽  
The Right ◽  
The Impact

Abstract. In the study, the neural basis of emotional reactivity was investigated. Reactivity was operationalized as the impact of emotional pictures on the self-reported ongoing affective state. It was used to divide the subjects into high- and low-responders groups. Independent sources of brain activity were identified, localized with the DIPFIT method, and clustered across subjects to analyse the visual evoked potentials to affective pictures. Four of the identified clusters revealed effects of reactivity. The earliest two started about 120 ms from the stimulus onset and were located in the occipital lobe and the right temporoparietal junction. Another two with a latency of 200 ms were found in the orbitofrontal and the right dorsolateral cortices. Additionally, differences in pre-stimulus alpha level over the visual cortex were observed between the groups. The attentional modulation of perceptual processes is proposed as an early source of emotional reactivity, which forms an automatic mechanism of affective control. The role of top-down processes in affective appraisal and, finally, the experience of ongoing emotional states is also discussed.

Cognitive Aging in a Precision Sport Context

1996 ◽  
Vol 1 (3) ◽  
pp. 166-179 ◽  
Author(s):  
Bo Molander ◽  
Lars Bäckman
Keyword(s):  
Older Adult ◽  
Cognitive Abilities ◽  
Cognitive Aging ◽  
Motor Performance ◽  
Intervention Programs ◽  
Laboratory Studies ◽  
High Arousal ◽  
Memory And Attention ◽  
Age Related ◽  
Principal Finding

Highly skilled miniature golf players were examined in a series of field and laboratory studies. The principal finding from these studies is that young and young adult players (range = 15-38 years) score equally well or better in competition than in training whereas older adult players (range = 46-73 years) perform worse in competitive events than under training conditions. It was also found that the impairment in motor performance on the part of the older players is associated with age-related deficits in basic cognitive abilities, such as memory and attention. These results support the hypothesis that older players may be able to compensate for age-related deficits under relaxed conditions, but not under conditions of high arousal. The possibility of improving the performance of the older players in stressful situations by means of various intervention programs is discussed.

Automation Surprise

2017 ◽  
Vol 7 (1) ◽  
pp. 28-41 ◽  
Author(s):  
Robert J. de Boer ◽  
Karel Hurts
Keyword(s):  
Flight Control ◽  
Representative Sample ◽  
Aviation Safety ◽  
Control Mode ◽  
Cognitive Errors ◽  
Laboratory Studies ◽  
Airline Pilots ◽  
Flight Operations ◽  
Widespread Phenomenon ◽  
Few Data

Abstract. Automation surprise (AS) has often been associated with aviation safety incidents. Although numerous laboratory studies have been conducted, few data are available from routine flight operations. A survey among a representative sample of 200 Dutch airline pilots was used to determine the prevalence of AS and the severity of its consequences, and to test some of the factors leading to AS. Results show that AS is a relatively widespread phenomenon that occurs three times per year per pilot on average but rarely has serious consequences. In less than 10% of the AS cases that were reviewed, an undesired aircraft state was induced. Reportable occurrences are estimated to occur only once every 1–3 years per pilot. Factors leading to a higher prevalence of AS include less flying experience, increasing complexity of the flight control mode, and flight duty periods of over 8 hr. It is concluded that AS is a manifestation of system and interface complexity rather than cognitive errors.

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