scholarly journals Breathe Easy EDA: A MATLAB toolbox for psychophysiology data management, cleaning, and analysis

F1000Research ◽  
2018 ◽  
Vol 7 ◽  
pp. 216 ◽  
Author(s):  
John C. Ksander ◽  
Sarah M. Kark ◽  
Christopher R. Madan
Keyword(s):  
Nervous System ◽  
Sympathetic Nervous System ◽  
Visual Inspection ◽  
Electrodermal Activity ◽  
Methodological Challenge ◽  
Matlab Toolbox ◽  
Data Analyses ◽  
Skin Conductance Responses ◽  
Sympathetic Nervous ◽  
Trial Structure

Electrodermal activity (EDA) recordings are widely used in experimental psychology to measure skin conductance responses (SCRs) that reflect sympathetic nervous system arousal. However, irregular respiration patterns and deep breaths can cause EDA fluctuations that are difficult to distinguish from genuine arousal-related SCRs, presenting a methodological challenge that increases the likelihood of false positives in SCR analyses. Thus, it is crucial to identify respiration-related artifacts in EDA data. Here we developed a novel and freely distributed MATLAB toolbox, Breathe Easy EDA (BEEDA). BEEDA is a flexible toolbox that facilitates EDA visual inspection, allowing users to identify and eliminate respiration artifacts. BEEDA further includes functionality for EDA data analyses (measuring tonic and phasic EDA components) and reliability analyses for artifact identification. The toolbox is suitable for any experiment recording both EDA and respiration data, and flexibly adjusts to experiment-specific parameters (e.g., trial structure and analysis parameters).

scholarly journals Breathe Easy EDA: A MATLAB toolbox for psychophysiology data management, cleaning, and analysis

F1000Research ◽  
2018 ◽  
Vol 7 ◽  
pp. 216
Author(s):  
John C. Ksander ◽  
Sarah M. Kark ◽  
Christopher R. Madan
Keyword(s):  
Nervous System ◽  
Sympathetic Nervous System ◽  
Visual Inspection ◽  
Electrodermal Activity ◽  
Methodological Challenge ◽  
Matlab Toolbox ◽  
Data Analyses ◽  
Skin Conductance Responses ◽  
Sympathetic Nervous ◽  
Trial Structure

Electrodermal activity (EDA) recordings are widely used in experimental psychology to measure skin conductance responses (SCRs) that reflect sympathetic nervous system arousal. However, irregular respiration patterns and deep breaths can cause EDA fluctuations that are difficult to distinguish from genuine arousal-related SCRs, presenting a methodological challenge that increases the likelihood of false positives in SCR analyses. Thus, it is crucial to identify respiration-related artifacts in EDA data. Here we developed a novel and freely distributed MATLAB toolbox, Breathe Easy EDA (BEEDA). BEEDA is a flexible toolbox that facilitates EDA visual inspection, allowing users to identify and eliminate respiration artifacts. BEEDA further includes functionality for EDA data analyses (measuring tonic and phasic EDA components) and reliability analyses for artifact identification. The toolbox is suitable for any experiment recording both EDA and respiration data, and flexibly adjusts to experiment-specific parameters (e.g., trial structure and analysis parameters).

A developmental increase in allostatic load from ages 3 to 11 years is associated with increased schizotypal personality at age 23 years

2011 ◽  
Vol 23 (4) ◽  
pp. 1059-1068 ◽  
Author(s):  
Melissa Peskin ◽  
Adrian Raine ◽  
Yu Gao ◽  
Peter H. Venables ◽  
Sarnoff A. Mednick
Keyword(s):  
Nervous System ◽  
Sympathetic Nervous System ◽  
Anxiety Disorders ◽  
Allostatic Load ◽  
Developmental Change ◽  
Electrodermal Activity ◽  
Positive Symptom ◽  
Developmental Abnormality ◽  
Schizotypal Personality ◽  
Sympathetic Nervous

AbstractAlthough allostatic load has been investigated in mood and anxiety disorders, no prior study has investigated developmental change in allostatic load as a precursor to schizotypal personality. This study employed a multilevel developmental framework to examine whether the development of increased allostatic load, as indicated by impaired sympathetic nervous system habituation from ages 3 to 11 years, predisposes to schizotypal personality at age 23 years. Electrodermal activity to six aversive tones was recorded in 995 subjects at age 3 years and again at 11 years. Habituation slopes at both ages were used to create groups who showed a developmental increase in habituation (decreased allostatic load), and those who showed a developmental decrease in habituation (increased allostatic load). Children who showed a developmental increase in allostatic load from ages 3 to 11 years had higher levels of schizotypal personality at 23 years. A breakdown of total schizotypy scores demonstrated specificity of findings to cognitive–perceptual features of schizotypy. Findings are the first to document a developmental abnormality in allostasis in relation to adult schizotypal personality. The relative failure to develop normal habituation to repeated stressors throughout childhood is hypothesized to result in an accumulation of allostatic load and consequently increased positive symptom schizotypy in adulthood.

scholarly journals Race and ethnic variation in college students’ allostatic regulation of racism-related stress

2020 ◽  
Vol 117 (49) ◽  
pp. 31053-31062 ◽  
Author(s):  
Jacob E. Cheadle ◽  
Bridget J. Goosby ◽  
Joseph C. Jochman ◽  
Cara C. Tomaso ◽  
Chelsea B. Kozikowski Yancey ◽  
...  
Keyword(s):  
Nervous System ◽  
Sympathetic Nervous System ◽  
Stress Reactivity ◽  
Negative Emotion ◽  
Electrodermal Activity ◽  
Wearable Sensors ◽  
Real Life ◽  
Sympathetic Nervous ◽  
Interpersonal Discrimination ◽  
Related Stress

Racism-related stress is thought to contribute to widespread race/ethnic health inequities via negative emotion and allostatic stress process up-regulation. Although prior studies document race-related stress and health correlations, due to methodological and technical limitations, they have been unable to directly test the stress-reactivity hypothesis in situ. Guided by theories of constructed emotion and allostasis, we developed a protocol using wearable sensors and daily surveys that allowed us to operationalize and time-couple self-reported racism-related experiences, negative emotions, and an independent biosignal of emotional arousal. We used data from 100 diverse young adults at a predominantly White college campus to assess racism-related stress reactivity using electrodermal activity (EDA), a biosignal of sympathetic nervous system activity. We find that racism-related experiences predict both increased negative emotion risk and heightened EDA, consistent with the proposed allostatic model of health and disease. Specific patterns varied across race/ethnic groups. For example, discrimination and rumination were associated with negative emotion for African American students, but only interpersonal discrimination predicted increased arousal via EDA. The pattern of results was more general for Latinx students, for whom interpersonal discrimination, vicarious racism exposure, and rumination significantly modulated arousal. As with Latinx students, African students were particularly responsive to vicarious racism while 1.5 generation Black students were generally not responsive to racism-related experiences. Overall, these findings provide support for allostasis-based theories of mental and physical health via a naturalistic assessment of the emotional and sympathetic nervous system responding to real-life social experiences.

scholarly journals Sympathetic nervous system and cardiovascular risk in mitral valve prolapse

2019 ◽  
Vol 19 (2) ◽  
pp. 51-57 ◽  
Author(s):  
L Bona Olexova ◽  
M Mestanik ◽  
A Jurko ◽  
N Sekaninova ◽  
M Slavikova ◽  
...  
Keyword(s):  
Nervous System ◽  
Cardiovascular Risk ◽  
Mitral Valve ◽  
Sympathetic Nervous System ◽  
Mitral Valve Prolapse ◽  
Sympathetic Activity ◽  
Electrodermal Activity ◽  
Regulatory State ◽  
Autonomic Nervous ◽  
Sympathetic Nervous

Abstract Mitral valve prolapse (MVP) represents a frequent cardiovascular condition associated with increased cardiovascular risk, which may have progressive course and become malignant. Dysregulation of autonomic nervous system - especially sympathetic overdrive – is one of the factors considered to play a key role in its aetiology and development. There is a growing evidence of a large impact of sympathetic system on the development of MVP. Exaggerated sympathetic activity may lead to morphologic changes in valves tissue such as thickening and redundancy. Nowadays, few investigative methods are known for evaluation of the regulatory state of sympathetic nervous system, which could be, theoretically, used to identify the subjects with sympathetic overactivity associated with an increased cardiovascular risk. Electrodermal activity or blood pressure variability represent promising non-invasive methods for evaluation of the regulatory outputs of sympathetic nervous system. There is a possibility to extend a set of investigative methods in MVP and include the monitoring of sympathetic activity in the assessment of cardiovascular risk. This article summarizes knowledge about pathogenesis, diagnostic and therapeutical approaches of MVP, and brings some novel insights on the parameters of autonomic nervous regulation, which haven’t yet been used in cardiovascular risk assessment in MVP.

Thyroid hormone-catecholamine interrelationships during exposure to cold

1981 ◽  
Vol 97 (1) ◽  
pp. 91-97 ◽  
Author(s):  
H. Storm ◽  
C. van Hardeveld ◽  
A. A. H. Kassenaar
Keyword(s):  
Nervous System ◽  
Plasma Concentration ◽  
Thyroid Hormone ◽  
Sympathetic Nervous System ◽  
Plasma Levels ◽  
Surgical Procedure ◽  
Exposure To Cold ◽  
Basal Plasma ◽  
Sympathetic Nervous

Abstract. Basal plasma levels for adrenalin (A), noradrenalin (NA), l-triiodothyronine (T3), and l-thyroxine (T4) were determined in rats with a chronically inserted catheter. The experiments described in this report were started 3 days after the surgical procedure when T3 and T4 levels had returned to normal. Basal levels for the catecholamines were reached already 4 h after the operation. The T3/T4 ratio in plasma was significantly increased after 3, 7, and 14 days in rats kept at 4°C and the same holds for the iodide in the 24-h urine after 7 and 14 days at 4°C. The venous NA plasma concentration was increased 6- to 12-fold during the same period of exposure to cold, whereas the A concentration remained at the basal level. During infusion of NA at 23°C the T3/T4 ratio in plasma was significantly increased after 7 days compared to pair-fed controls, and the same holds for the iodide excretion in the 24-h urine. This paper presents further evidence for a role of the sympathetic nervous system on T4 metabolism in rats at resting conditions.

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