scholarly journals Electrodermal activity in relation to diabetes, autonomic neuropathy and aging: a preliminary study

2019 ◽  
Vol 39 (3) ◽  
pp. 27-33
Author(s):  
Luis Daniel Bolanos ◽  
Jose Maria Vicente ◽  
Oscar Andres Vivas ◽  
Jose Maria Sabater-Navarro
Keyword(s):  
Autonomic Neuropathy ◽  
Skin Conductance ◽  
Skin Conductance Response ◽  
Electrodermal Activity ◽  
Skin Conductance Level ◽  
Past Research ◽  
Clinical History ◽  
Control Group ◽  
Diabetic Patients ◽  
Preliminary Study

A reduced electrodermal activity (EDA) may be related to autonomic neuropathy (AN). The aims of this study were to independently study the characteristics of the EDA and its correlation with diabetes and AN. During a selfdesigned test, mean skin conductance level (MSCL), mean skin conductance response (MSCR) to stimuli, and difference in MSCL between feet (DBF) were obtained through a modelbased decomposition based on Bayesian statistics and mathematical convex optimization. A group of 22 subjects were included for the final test. Diabetic patients were stratified based on their clinical history and care habits, dividing them into those out of risk and those at risk of developing AN. Statistical difference was found for the latter regarding MSCR (p < 0,01) and DBF (p < 0,05) with respect to the control group. While past research failed to address potential sources of interference with the EDA measurement, namely emotional state, degree of concentration on the task, and body posture, this study proposes a welldefined protocol to stimulate subjects and acquire proper and reliable EDA data.

The effect of temporal lobe surgery on electrodermal activity: implications for an organic hypothesis in the aetiology of schizophrenia

1979 ◽  
Vol 9 (2) ◽  
pp. 281-285 ◽  
Author(s):  
B. K. Toone ◽  
E. Cooke ◽  
M. H. Lader
Keyword(s):  
Temporal Lobe ◽  
Skin Conductance ◽  
Skin Conductance Response ◽  
Electrodermal Activity ◽  
Skin Conductance Level ◽  
Temporal Lobectomy ◽  
Control Groups ◽  
And Control ◽  
Spontaneous Fluctuations ◽  
Conductance Level

SynopsisIt has recently been suggested that the bilateral asymmetry of electrodermal activity (EDA) reported in schizophrenia may be related to unilateral temporal lobe dysfunction. To test this hypothesis, 3 aspects of EDA – skin conductance level (SCL), number of spontaneous fluctuations (SF), and skin conductance response (SCR) – were measured bilaterally in 10 patients who had undergone unilateral temporal lobectomy. No differences could be detected between the operated and non-operated sides within the patient group, nor between the patient and control groups. The implications of these findings are discussed.

Multiple measures of hemispheric dysfunction in schizophrenia and depression

1983 ◽  
Vol 13 (2) ◽  
pp. 287-297 ◽  
Author(s):  
Sid J. Schneider
Keyword(s):  
Skin Conductance ◽  
Skin Conductance Response ◽  
Right Hemisphere ◽  
Electrodermal Activity ◽  
Skin Conductance Level ◽  
Perceptual Task ◽  
Left Hand ◽  
Chronic Schizophrenics ◽  
The Right ◽  
Conductance Level

SYNOPSISElectrodermal, electroencephalographic and perceptual measures of lateral hemispheric function were obtained from groups of chronic schizophrenics, depressives and normals on 2 occasions, separated by 4 weeks. The measures of hemispheric function were derived from previous research. About half of the schizophrenics were medicated on both occasions; the other schizophrenics underwent drug ‘washout’ before the first session. Results revealed that the measures of laterality were not strongly intercorrelated. In the perceptual task, the schizophrenics and normals displayed different laterality effects. Unlike the normals, the schizophrenics' left hemisphere function appeared to be inferior to the right hemisphere function in the perceptual task. The laterality effects of the depressives and normals differed on two electrodermal measures: skin conductance level and skin conductance response amplitude. The depressives' electrodermal activity from the right hand was diminished as compared with the left hand; the normals did not show this effect. Medication decreased electrodermal activity in the schizophrenics, but had no significant effect on laterality. These results suggest that the various measures of laterality used singly in previous research in psychopathology may not all assess the same phenomenon.

scholarly journals The Relationship between Different Types of Alarm Sounds and Children’s Perceived Risk Based on Their Physiological Responses

2019 ◽  
Vol 16 (24) ◽  
pp. 5091
Author(s):  
Jiaxu Zhou ◽  
Xiaohu Jia ◽  
Guoqiang Xu ◽  
Junhan Jia ◽  
Rihan Hai ◽  
...  
Keyword(s):  
Skin Conductance ◽  
Perceived Risk ◽  
Electrodermal Activity ◽  
Physiological Responses ◽  
Skin Conductance Level ◽  
Kindergarten Children ◽  
Physiological Data ◽  
Adult Males ◽  
Different Types ◽  
Alarm Sounds

Due to differences in cognitive ability and physiological development, the evacuation characteristics of children are different from those of adults. This study proposes a novel method of using wearable sensors to collect data (e.g., electrodermal activity, EDA; heart rate variability, HRV) on children’s physiological responses, and to continuously and quantitatively evaluate the effects of different types of alarm sounds during the evacuation of children. In order to determine the optimum alarm for children, an on-site experiment was conducted in a kindergarten to collect physiological data for responses to different types of alarm sounds during the evacuation of 42 children of different ages. The results showed that: (1) The alarm sounds led to changes in physiological indicators of children aged 3–6 years, and the effects of different types of alarm sounds on EDA and HRV activities were significantly different (p < 0.05). Skin conductance (SC), skin conductance tonic (SCT) and skin conductance level (SCL) can be used as the main indicators for analysing EDA of children in this experiment (p < 0.05), and the indicators of ultralow frequency (ULF) and very low frequency (VLF) for HRV were not affected by the type of alarm sounds (p > 0.05). (2) Unlike adults, kindergarten children were more susceptible to the warning siren. The combined voice and warning alarm had optimal effects in stimulating children to perceive risk. (3) For children aged 3–6 years, gender had a significant impact on children’s reception to evacuation sound signals (p < 0.05): Girls are more sensitive than boys in receiving evacuation sound signals, similar to findings of studies of risk perception of adult males and females. In addition, the higher the age, the greater the sensitivity to evacuation sound signals, which accords with results of previous studies on the evacuation dynamics of children.

Autonomic Arousal in Eating Disorders: Further Evidence for the Clinical Subdivision of Anorexia Nervosa

1983 ◽  
Vol 142 (1) ◽  
pp. 38-42 ◽  
Author(s):  
Paul Calloway ◽  
Peter Fonagy ◽  
Anthony Wakeling
Keyword(s):  
Eating Disorders ◽  
Anorexia Nervosa ◽  
Bulimia Nervosa ◽  
Skin Conductance ◽  
Skin Conductance Level ◽  
Autonomic Arousal ◽  
Control Group ◽  
Control Subjects ◽  
Skin Conductance Responses ◽  
Conductance Level

SummaryAutonomic arousal, measured by skin conductance level and response, was examined in 36 female patients with eating disorders (anorexia nervosa and bulimia nervosa) and 32 control subjects. No differences were found between the control group and anorexics who lost weight solely through dieting (restricting anorexics). Patients with a diagnosis of bulimia nervosa and anorexics with bulimic features, however, showed fewer spontaneous skin conductance responses and were faster to habituate to 85 dB tones than either controls or restricting anorexic patients. The pattern of findings supports recent views concerning the clinical subdivision of anorexia nervosa.

Effects of Electrical Acupuncture on Acupoint BL15 Evaluated in Terms of Heart Rate Variability, Pulse Rate Variability and Skin Conductance Response

2006 ◽  
Vol 34 (01) ◽  
pp. 23-36 ◽  
Author(s):  
Chih-Chieh Hsu ◽  
Ching-Sung Weng ◽  
Te-Sheng Liu ◽  
Yuh-Show Tsai ◽  
Yung-Hsien Chang
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Skin Conductance ◽  
Pulse Rate ◽  
Skin Conductance Response ◽  
Control Group ◽  
Pulse Rate Variability ◽  
Electrical Acupuncture ◽  
Experimental Group ◽  
Frequency Power

In this research, heart rate variability (HRV), pulse rate variability (PRV) and human skin conductance (SC) of all acupoints on Heart Meridian were used to evaluate the effects of electrical acupuncture (EA) on acupoint BL15 (Bladder Meridian). Ten healthy volunteers (aged 23 ± 6) were selected as the control group on the first day, and then used again as the experimental group on the second day. The control group received sham EA during the study, while subjects of the experimental group were stimulated by 2 Hz EA on acupoint BL15 for 10 minutes. Electrocardiogram (ECG), wrist blood pressure pulse meter and skin conductance response (SCR) device were used to measure and analyze HRV, PRV and SCR for the two groups before and after stimulation. From the spectrum analysis of ECG and pulse pressure graph, we found that the EA applied on BL15 could induce a significant increase in the normalized high frequency power (nHFP) component of HRV and PRV, as well as a significant decrease in the normalized low frequency power (nLFP) part ( p < 0.05). Moreover, both the heart rate and pulse rate were reduced in the analysis of the time domain of ECG and PRV. Furthermore, most of the SCR values at acupoints were decreased after stimulation. These results also indicate that the stimulation of BL15 by EA could cause relaxation, calmness and reduce feeling of tension or distress.

Skin Conductance, Marlowe-Crowne Defensiveness, and Dental Anxiety

1994 ◽  
Vol 79 (1) ◽  
pp. 611-622 ◽  
Author(s):  
Carmen Benjamins ◽  
Albert H. B. Schuurs ◽  
Johan Hoogstraten
Keyword(s):  
Skin Conductance ◽  
Dental Care ◽  
Electrodermal Activity ◽  
Dental Anxiety ◽  
Skin Conductance Level ◽  
Dental Patients ◽  
High Anxious ◽  
Skin Conductance Levels ◽  
Dental Appointment ◽  
The Relationship

The present study assesses the relationship between self-reported dental anxiety (Dental Anxiety Inventory, Dental Anxiety Scale, and Duration of Psychophysiological Fear Reactions), electrodermal activity (skin-conductance level and frequency of spontaneous responses), and Marlowe-Crowne defensiveness. All measurements were made twice. The first session was scheduled immediately before a semi-annual dental check-up (stress condition), and baseline measurements were made two months later without the prospect of a dental appointment. Subjects were male dental patients who regularly attended a university dental clinic and a clinic for Special Dental Care. The main findings were that the low anxious-high defensive-scoring (Marlowe-Crowne Denial subscale) university patients showed significantly higher skin-conductance levels and frequency of nonspecific fluctuations than the low anxious-low defensive-scoring subjects. Besides, the conductance values of the low anxious-high defensive-scoring subjects resembled those of the high anxious-low defensive-scoring patients of the clinic for Special Dental Care, the baseline frequency of nonspecific fluctuations excepted.

scholarly journals Omega-3 Polyunsaturated Fatty Acids Improved Arterial Stiffness Parameters in Type 2 Diabetic Patients with Cardiac Autonomic Neuropathy

2018 ◽  
Vol 25 (4) ◽  
pp. 363-368
Author(s):  
Victoria Serhiyenko ◽  
Ludmila Serhiyenko ◽  
Alexandr Serhiyenko
Keyword(s):  
Fatty Acids ◽  
Arterial Stiffness ◽  
Polyunsaturated Fatty Acids ◽  
Autonomic Neuropathy ◽  
Augmentation Index ◽  
Cardiac Autonomic Neuropathy ◽  
Control Group ◽  
Diabetic Patients ◽  
Omega 3

Abstract Background and Aims: Diabetic cardiac autonomic neuropathy (DCAN) in type 2 diabetes (T2D) is among the strongest and independent risk markers for future global and cardiac mortality. Material and Methods: Thirty-six patients suffering from T2D and confirmed DCAN were enrolled in this investigation. Depending on the prescribed therapy, patients were allocated into two groups: group 1 was comprised of 15 patients to whom standard hypoglycemic treatment was prescribed (control group), the second received standard hypoglycemic treatment and omega-3 polyunsaturated fatty acids (ω-3 PUFAs, n = 21). The duration of the study was three month. Results: In subjects with T2D and DСAN prescription of ω-3 PUFAs was associated with a significant decrease of aorta augmentation index (AIxao), pulse wave velocity (PWV) during the active period of the day and decrease of AIxao, brachial augmentation index and PWV during the passive period of the day compared with the control group. Therefore, three month of ω-3 PUFAs supplementation to patients with confirmed DCAN and T2D promotes to improvement of arterial stiffness indices. Conclusions: In patients with T2D and СAN treatment with ω-3 PUFAs improved arterial stiffness parameters. The effectiveness of ω-3 PUFAs is not connected with optimization of glycemic control, but is rather the result of a direct drug action on the studied parameters.

Psychophysiological arousal in different gambling phases in youngs and adolescents

2017 ◽  
Vol 17 (2) ◽  
pp. 37-44
Author(s):  
David Herrero Fernández ◽  
Ana Estevez ◽  
Izaskun Sarabia ◽  
Laura Merino
Keyword(s):  
Skin Conductance ◽  
Skin Conductance Response ◽  
Skin Conductance Level ◽  
Clinical Implications ◽  
Second Phase ◽  
Gambling Problems ◽  
Psychophysiological Arousal ◽  
Frequent Problem ◽  
Shed Light ◽  
Conductance Level

Nowadays, gambling is increasing as a more frequent problem among the young people. In order to shed light about the physiological correlates of the three phases that were identified in the roulette gambling game (phase of betting, phase of watching the rotation of the roulette and phase of watching the final result), 24 participants, with no pathological gambling problems, participated in three attempts of this game. Heart rate, skin conductance level and skin conductance response were recorded. The results showed that betting phase is the phase where highest arousal is experienced by the participants, followed by the phase of watching the rotation of the roulette. Likewise, it was verified that not getting the prize provokes a quick habituation that is evidenced in the decrease of the arousal in the second phase. Finally, clinical implications of the results are discussed.

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