scholarly journals How can skin conductance responses increase over trials while skin resistance responses decrease?

1985 ◽  
Vol 13 (4) ◽  
pp. 291-295 ◽  
Author(s):  
Manfred Velden ◽  
Gerhard Vossel
Keyword(s):  
Skin Conductance ◽  
Skin Resistance ◽  
Skin Conductance Responses

Lying and perception of lies by bilingual speakers

2019 ◽  
Vol 40 (05) ◽  
pp. 1313-1329 ◽  
Author(s):  
Nora Kreyßig ◽  
Agnieszka Ewa Krautz
Keyword(s):  
Second Language ◽  
Skin Conductance ◽  
Emotional Response ◽  
Native Language ◽  
Reading Aloud ◽  
Emotional Valence ◽  
Bilingual Speakers ◽  
Skin Conductance Responses ◽  
English Second Language ◽  
Task Requirements

AbstractMultiple studies on bilingualism and emotions have demonstrated that a native language carries greater emotional valence than the second language. This distinction appears to have consequences for other types of behavior, including lying. As bilingual lying has not been explored extensively, the current study investigated the psychophysiological differences between German (native language) and English (second language) in the lying process as well as in the perception of lies. The skin conductance responses of 26 bilinguals were measured during reading aloud true and false statements and listening to recorded correct and wrong assertions. The analysis revealed a lie effect, that is, statistically significant differences between valid and fictitious sentences. In addition, the values in German were higher compared to those in English, in accordance with the blunted emotional response account (Caldwell-Harris & Aycicegi-Dinn, 2009). Finally, the skin conductance responses were lower in the listening condition in comparison to the reading aloud. The results, however, are treated with caution given the fact that skin conductance monitoring does not allow assigning heightened reactivity of the skin to one exclusive cause. The responses may have been equally induced by the content of the statements, which prompted positive or negative associations in the participants’ minds or by the specific task requirements.

scholarly journals Behavioral Triggers of Skin Conductance Responses and Their Neural Correlates in the Primate Amygdala

2009 ◽  
Vol 101 (4) ◽  
pp. 1749-1754 ◽  
Author(s):  
Christopher M. Laine ◽  
Kevin M. Spitler ◽  
Clayton P. Mosher ◽  
Katalin M. Gothard
Keyword(s):  
Skin Conductance ◽  
Single Unit ◽  
Population Level ◽  
Emotional Reaction ◽  
Neural Population ◽  
Experimental Conditions ◽  
Indirect Measure ◽  
Skin Conductance Responses ◽  
The Right ◽  
Sympathetic Arousal

The amygdala plays a crucial role in evaluating the emotional significance of stimuli and in transforming the results of this evaluation into appropriate autonomic responses. Lesion and stimulation studies suggest involvement of the amygdala in the generation of the skin conductance response (SCR), which is an indirect measure of autonomic activity that has been associated with both emotion and attention. It is unclear if this involvement marks an emotional reaction to an external stimulus or sympathetic arousal regardless of its origin. We recorded skin conductance in parallel with single-unit activity from the right amygdala of two rhesus monkeys during a rewarded image viewing task and while the monkeys sat alone in a dimly lit room, drifting in and out of sleep. In both experimental conditions, we found similar SCR-related modulation of activity at the single-unit and neural population level. This suggests that the amygdala contributes to the production or modulation of SCRs regardless of the source of sympathetic arousal.

Stimulus Site Effects on Skin Conductance Responses From the Volar Surfaces

1974 ◽  
Vol 11 (3) ◽  
pp. 365-371 ◽  
Author(s):  
Marcus J. Fuhrer
Keyword(s):  
Skin Conductance ◽  
Site Effects ◽  
Skin Conductance Responses ◽  
Stimulus Site

Latency of skin conductance responses across stimulus modalities

2018 ◽  
Vol 56 (4) ◽  
pp. e13307 ◽  
Author(s):  
R. Sjouwerman ◽  
T. B. Lonsdorf
Keyword(s):  
Skin Conductance ◽  
Skin Conductance Responses ◽  
Stimulus Modalities

scholarly journals Identification of Emotions in Offenders With Antisocial Personality Disorder (ASP)

2020 ◽  
Vol 41 (1) ◽  
pp. 8-16
Author(s):  
Catarina Iria ◽  
Fernando Barbosa ◽  
Rui Paixão
Keyword(s):  
Personality Disorder ◽  
Facial Expressions ◽  
Skin Conductance ◽  
Antisocial Personality Disorder ◽  
Monetary Reward ◽  
Control Group ◽  
Antisocial Personality ◽  
Response Cost ◽  
Skin Conductance Responses ◽  
Facial Expressions Of Emotion

Abstract. A group of offenders with antisocial personality (ASP) and a control group identified facial expressions of emotion under three conditions: monetary reward, monetary response cost, and no contingency, to explore effects on the antisocial offenders’ deficits commonly reported in these tasks. Skin Conductance Responses (SCRs) indexed emotional arousal. Offenders with ASP performed worse than controls under reward and no contingency conditions, but under the response-cost condition results were similar. The offenders with ASP presented higher SCR than the controls in the two monetary conditions. Findings suggest that offenders with ASP are hypersensitive to monetary contingencies; monetary reward seems to interfere negatively in their performance while monetary response cost improves it. Arousal level seems unable to explain ability to identify facial affects, while results suggest that methodological variations may explain the conflicting results in the literature.

scholarly journals Brief Training to Modify the Breadth of Attention Influences the Generalisation of Fear

2020 ◽  
Author(s):  
Mohith M. Varma ◽  
Riddhi J. Pitliya ◽  
Tomislav D. Zbozinek ◽  
Tomer Shechner ◽  
Tom J. Barry
Keyword(s):  
Skin Conductance ◽  
Reinforcement Schedule ◽  
Local Group ◽  
Attentional Focus ◽  
Important Process ◽  
Attentional Training ◽  
Brief Training ◽  
Skin Conductance Responses ◽  
Attentional Breadth ◽  
Breadth Of Attention

Abstract Background Generalisation of fear from dangerous to safe stimuli is an important process associated with anxiety disorders. However, factors that contribute towards fear (over)-generalisation remain poorly understood. The present investigation explored how attentional breadth (global/holistic and local/analytic) influences fear generalisation and, whether people trained to attend in a global vs. local manner show more or less generalisation. Methods Participants (N = 39) were shown stimuli which comprised of large ‘global’ letters and smaller ‘local’ letters (e.g. an F comprised of As) and they either had to identify the global or local letter. Participants were then conditioned to fear a face by pairing it with an aversive scream (75% reinforcement schedule). Perceptually similar, but safe, faces, were then shown. Self-reported fear levels and skin conductance responses were measured. Results Compared to participants in Global group, participants in Local group demonstrated greater fear for dangerous stimulus (CS +) as well as perceptually similar safe stimuli. Conclusions Participants trained to attend to stimuli in a local/analytical manner showed higher magnitude of fear acquisition and generalisation than participants trained to attend in a global/holistic way. Breadth of attentional focus can influence overall fear levels and fear generalisation and this can be manipulated via attentional training.

scholarly journals An Emotional Roller Coaster: Electrophysiological Evidence of Emotional Engagement during a Roller-Coaster Ride with Virtual Reality Add-On

2020 ◽  
pp. 109634802094443
Author(s):  
Marcel Bastiaansen ◽  
Monique Oosterholt ◽  
Ondrej Mitas ◽  
Danny Han ◽  
Xander Lub
Keyword(s):  
Time Series ◽  
Virtual Reality ◽  
Present Article ◽  
Skin Conductance ◽  
Experimental Psychology ◽  
Emotional Engagement ◽  
Roller Coaster ◽  
Skin Conductance Responses ◽  
Tourism Experience ◽  
Over Time

Emotions are crucial ingredients of meaningful and memorable tourism experiences. Research methods borrowed from experimental psychology are prime candidates for quantifying emotions while experiences are unfolding. The present article empirically evaluates the methodological feasibility and usefulness of ambulatory recordings of skin conductance responses (SCRs) during a tourism experience. We recorded SCRs in participants while they experienced a roller-coaster ride with or without a virtual reality (VR) headset. Ride elements were identified that related to physical aspects (such as accelerations and braking), to events in the VR environment, and to the physical theming of the roller coaster. VR rides were evaluated more positively than normal rides. SCR time series were meaningfully related to the different ride elements. SCR signals did not significantly predict overall evaluations of the ride. We conclude that psychophysiological measurements are a new avenue for understanding how hospitality, tourism and leisure experiences dynamically develop over time.

Skin conductance and schizophrenic symptomatology

2000 ◽  
Vol 12 (4) ◽  
pp. 177-182 ◽  
Author(s):  
J. à Campo ◽  
H.L.G.J. Merckelbach ◽  
H. Nijman ◽  
M. Yeates-Frederikx ◽  
W. Allertz
Keyword(s):  
Patient Group ◽  
Skin Conductance ◽  
Mean Amplitude ◽  
Control Group ◽  
Skin Conductance Responses ◽  
Skin Conductance Levels ◽  
Schizophrenic Patients ◽  
Group A ◽  
The Mean ◽  
Psychophysiological Parameter

SUMMARYSkin conductance is a psychophysiological parameter that reflects fundamental processes such as attention and arousal. The present study explored whether deviations in skin conductance activity are associated with severity of schizophrenic symptoms. For this purpose, Skin Conductance Responses (SCRs) to discrete stimuli (80 dB noises) and Skin Conductance Levels (SCLs) of 37 schizophrenic patients and 31 healthy volunteers were recorded. In accordance with previous studies, schizophrenic patients were found to be hyporesponsive compared to healthy controls. More specifically, almost half of the patients (46%) did not react with any SCR to the first 3 stimuli, whereas only 10% of the control group exhibited such a non-responding. Accordingly, the mean amplitude of the first 3 SCRs – as measured in u Siemens – was found to be significantly lower in patients compared to controls. As well, mean SCL was found to be (marginally) elevated in the patient group. This was especially the case for patients who did exhibit SCRs. In the patient group, a negative correlation was found between amplitude of SCRs and symptom severity. This association was mainly carried by a significant correlation between positive symptoms and reduced SCRs. The clinical relevance of these findings is discussed in detail.

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