Human Stress Recovery during Exposure to Geranium Visual Stimuli

Evaluating human psychophysiological responses to plant visual stimuli provides a clearer understanding of factors within plant environments that enhance or maximize recovery from stress. Advances in physiological monitoring technology allow continuous recording and more-refined data collection of human responses to environmental stimuli. The objective of this study was to compare effects on stress recovery by exposures to geranium visual stimuli following an induced stressor, by measuring changes in physiological indicators and emotional states. One-hundred-fifty college students were randomly assigned to one of three treatment groups: red-flowering geraniums, non-flowering geraniums, or no geraniums. Each student viewed a 10-min film of a stressful human situation following a 5-min baseline, then was exposed to an assigned treatment setting during a 5-min recovery period. Continuous physiological measurements were taken of brainwave activities (EEG), skin conductance (EDR), and finger skin temperature. Self-rating scores of subjects' feelings were taken using the Zuckerman Inventory of Personal Reactions. Comparisons among treatment groups will be discussed based on gender and other demographic factors.

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Using Thermodynamic Degradation Approach to Quantify Human Stress Response

Journal of Thermodynamics ◽

10.1155/2017/7546823 ◽

2017 ◽

Vol 2017 ◽

pp. 1-5 ◽

Cited By ~ 1

Author(s):

Satish Boregowda ◽

Rod Handy ◽

Darrah Sleeth ◽

Naomi Riches

Keyword(s):

Stress Response ◽

Skin Temperature ◽

Statistical Significance ◽

Entropy Change ◽

Stressful Event ◽

Finger Skin Temperature ◽

Male And Female ◽

Human Stress ◽

Finger Skin ◽

Female Subjects

The present study provides a thermodynamic degradation approach to model human stress response. Finger skin temperature was used as an indicator of stress response to a stressor (or stressful event) followed by a recovery. The entropy change (ΔS) is calculated using heat transfer (δQ) from the peripheral skin and finger skin temperature (Tf). It was hypothesized that the human stress response, as evidenced by finger skin temperature change, is a quasi-static process. The entropy approach is demonstrated using data from a medical school experimental study. The finger skin temperature was measured under three conditions (relaxation, stressor task, and recovery) during the physiological test profile. The entropy change (ΔS) is postulated as entropy damage (ΔSD), which is a metric for measuring the aging or system degradation. The aging-ratio, Aaging-ratio, that is, the ratio of entropy change due to stressor to that of recovery, is presented for both male and female subjects. The statistical t-tests demonstrate statistical significance in human stress response to stressor and recovery states within and between male and female subjects. This novel approach could be valuable to medical researchers, particularly in the field of occupational health to evaluate human exposure to stressful environments.

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Predicting Stress in Teens from Wearable Device Data Using Machine Learning Methods

10.1101/2020.11.26.20223784 ◽

2020 ◽

Author(s):

Claire W. Jin ◽

Ame Osotsi ◽

Zita Oravecz

Keyword(s):

High Stress ◽

Well Being ◽

Physiological Signals ◽

Support Vector ◽

Stressful Event ◽

Emotional States ◽

Machine Model ◽

Daily Lives ◽

Physiological Indicators ◽

Physiological Markers

AbstractStress management is a pervasive issue in the modern high schooler’s life. Despite many efforts to support adolescents’ mental well-being, teenagers often fail to recognize signs of high stress and anxiety until their emotions have escalated. Being able to identify early signs of these intense emotional states and predict their onset using physiological signals collected passively in real-time could help teenagers improve their awareness of their emotional well-being and take a more proactive approach to managing their emotions. To evaluate the potential of this approach, we collected data from high schoolers with Empatica E4 wearable health monitors (wristband) while they were living their daily lives. The data consisted of stressful event reports and physiological markers over the course of 4 weeks. We developed a random forest model and a support vector machine model and systematically assessed their performance in terms of predicting the onset of stress events and identifying physiological signals of stress. The models showed strong performance in terms of these measures and provided insights on physiological indicators of adolescent stress.

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Evaluation of finger skin temperature in scleroderma patients cyclically treated with iloprost

Joint Bone Spine ◽

10.1016/j.jbspin.2005.04.006 ◽

2006 ◽

Vol 73 (1) ◽

pp. 57-61 ◽

Cited By ~ 4

Author(s):

Paola Caramaschi ◽

Domenico Biasi ◽

Sabrina Canestrini ◽

Nicola Martinelli ◽

Luigi Perbellini ◽

...

Keyword(s):

Skin Temperature ◽

Finger Skin Temperature ◽

Finger Skin

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Stress Recovery of Campus Street Trees as Visual Stimuli on Graduate Students in Autumn

International Journal of Environmental Research and Public Health ◽

10.3390/ijerph17010148 ◽

2019 ◽

Vol 17 (1) ◽

pp. 148 ◽

Cited By ~ 2

Author(s):

Li-Na Guo ◽

Ren-Lin Zhao ◽

Ai-Hua Ren ◽

Li-Xin Niu ◽

Yan-Long Zhang

Keyword(s):

Graduate Students ◽

Social Stress ◽

Stress Test ◽

The State ◽

Trier Social Stress Test ◽

Stress Recovery ◽

Street Trees ◽

Sophora Japonica ◽

Human Stress ◽

Environment Control

Human stress recovery response to landscapes is under discussion in Chinese settings. The present study aimed to clarify the stress recovery effects of campus street trees on graduate students in autumn. A total of 150 participants (23.75 ± 1.01 years old) completed the Trier Social Stress Test (TSST) and were then randomly assigned to view one of five virtual environments, including the street trees Sophora japonica, Ginkgo biloba, Platanus acerifolia, Koelreuteria paniculata, and the indoor environment (control). Physiological responses were measured by R-R interval and electroencephalography (EEG). Psychological responses were examined through the state version of the State-Trait Anxiety Inventory (STAI-S) and the Perceived Restorativeness Scale (PRS). Results showed that R-R intervals significantly increased while viewing all street trees. Both alpha and beta brainwave activities while viewing S. japonica and G. biloba were remarkably higher than those while viewing P. acerifolia and K. paniculata. The STAI-S scores significantly decreased, and the positive PRS scores were registered after viewing street trees. We concluded that a brief virtual visual experience of campus street trees in autumn has stress recovery effects on graduate students, and the different levels of stress recovery are associated with different types of street trees.

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The Nature of Reality: Human Stress Recovery during Exposure to Biodiverse, Multisensory Virtual Environments

International Journal of Environmental Research and Public Health ◽

10.3390/ijerph17010056 ◽

2019 ◽

Vol 17 (1) ◽

pp. 56 ◽

Cited By ~ 3

Author(s):

Morgan Faith Schebella ◽

Delene Weber ◽

Lisa Schultz ◽

Philip Weinstein

Keyword(s):

Virtual Environments ◽

Social Stress ◽

Stress Test ◽

Past Research ◽

Well Being ◽

Trier Social Stress Test ◽

Stress Recovery ◽

Natural Environments ◽

Olfactory Stimuli ◽

Human Stress

Immersive virtual environments (IVEs) were used to test the effects of biodiversity on recovery from induced stress. Three natural environments and one urban environment were used to represent ordinal levels of biodiversity (none, low, moderate, and high). The four IVEs comprised visual, auditory, and olfactory stimuli. An additional high biodiversity IVE without auditory or olfactory stimuli was also included to study the effects of multisensory stimulation per se on recovery from stress and perceptions of biodiversity. Following stress induction via a novel IVE Trier Social Stress Test (TSST-IVE), heart rate and five self-reported well-being measures were used to assess participants’ recovery after immersion in one of the five IVEs. The results showed consistent well-being responses across both self-reported and physiological measures, suggesting biodiversity does directly affect human well-being. However, the relationship was not linear. For most measures of well-being, stress recovery was least effective in the urban IVE, consistent with past research. The low biodiversity IVE elicited the greatest improvement in all well-being measures except self-reported calmness. One could speculate that the landscape features of the least biodiverse IVE may elicit subconscious preferences toward savanna-like landscapes, as suggested by previous studies. The IVE depicting a moderate level of biodiversity was the least restorative of the natural environments. A multisensory experience was associated with better recovery in all measures of well-being than a visual-only experience, and perceptions of landscape components significantly differed between two identical nature scenes when auditory and olfactory stimuli were removed. Nuances in the data and implications of the findings are discussed. The results signal a need for caution and question the assumption that cultural ecosystem services align with positive outcomes for biodiversity conservation.

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Cold-stress tests involving finger skin temperature measurement for evaluation of vascular disorders in hand-arm vibration syndrome: review of the literature

International Archives of Occupational and Environmental Health ◽

10.1007/s004200100273 ◽

2002 ◽

Vol 75 (1) ◽

pp. 14-19 ◽

Cited By ~ 17

Author(s):

Noriaki Harada

Keyword(s):

Cold Stress ◽

Temperature Measurement ◽

Skin Temperature ◽

Stress Tests ◽

Review Of The Literature ◽

Finger Skin Temperature ◽

Vibration Syndrome ◽

Vascular Disorders ◽

Finger Skin

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Influence of Waterproof Covering on Finger Skin Temperature and Hand Pain during Immersion Test for Diagnosing Hand-arm Vibration Syndrome

Industrial Health ◽

10.2486/indhealth.42.79 ◽

2004 ◽

Vol 42 (1) ◽

pp. 79-82 ◽

Cited By ~ 5

Author(s):

Kumiko SUIZU ◽

Masaiwa INOUE ◽

Takae FUJIMURA ◽

Hideko MORITA ◽

Junko INAGAKI ◽

...

Keyword(s):

Skin Temperature ◽

Immersion Test ◽

Finger Skin Temperature ◽

Vibration Syndrome ◽

Hand Pain ◽

Finger Skin

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Effects of Room Temperature, Seasonal Condition and Food Intake on Finger Skin Temperature during Cold Exposure Test for Diagnosing Hand-Arm Vibration Syndrome.

Industrial Health ◽

10.2486/indhealth.36.166 ◽

1998 ◽

Vol 36 (2) ◽

pp. 166-170 ◽

Cited By ~ 15

Author(s):

Noriaki HARADA ◽

Mieko IWAMOTO ◽

Md Shawkatuzzaman LASKAR ◽

Iwao HIROSAWA ◽

Minoru NAKAMOTO ◽

...

Keyword(s):

Food Intake ◽

Skin Temperature ◽

Cold Exposure ◽

Room Temperature ◽

Finger Skin Temperature ◽

Vibration Syndrome ◽

Exposure Test ◽

Finger Skin

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Melatonin treatment improves the shelf-life and postharvest quality of table grape (Vitis labrusca L. cv. ‘Fengzao’)

Journal of Berry Research ◽

10.3233/jbr-200569 ◽

2020 ◽

Vol 10 (4) ◽

pp. 665-676

Author(s):

Ya-Dan Sun ◽

Da-Long Guo ◽

Sheng-Di Yang ◽

He-Cheng Zhang ◽

Lei-Lei Wang ◽

...

Keyword(s):

Dna Methylation ◽

Shelf Life ◽

Soluble Solids ◽

Postharvest Quality ◽

Vitis Labrusca ◽

Physiological Indicators ◽

Treatment Groups ◽

Table Grapes

BACKGROUND: Melatonin (MT) is an endogenous indoleamine that regulates senescence progression and stress response in plants. OBJECTIVE: Here, we investigated the effect of MT on the shelf-life and postharvest quality of table grapes (Vitis labrusca L. cv. ‘Fengzao’). METHODS: After harvesting, ‘Fengzao’ grapes were immersed in MT solution at various concentrations (0 [as control], 0.05, 0.1, 0.5 and 1.0 mM for 2 h and stored at 24±1 for 15 days. Physiological indicators including weight loss rate, firmness, contents of total soluble solids (TSSs), ascorbic acid (AsA), malondialdehyde (MDA), hydrogen peroxide (H2O2), and activities of catalase (CAT), ascorbate peroxidase (APX), and superoxide dismutase (SOD) were investigated. Additionally, the DNA methylation rate of ‘Fengzao’ grapes were measured using the methylation-sensitive amplification polymorphism (MSAP) technique. RESULTS: Application of MT effectively delayed grape senescence in all treatment groups compared with the control, with the longest delay observed in the 0.5 mM treatment. Additionally, the rate of DNA methylation decreased in all the 0.5 mM MT treatment groups, indicating a potential role of MT in demethylation. CONCLUSIONS: Our results suggest that the exogenous application of MT can delay the senescence of grapes during postharvest.

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