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Bernhardsson, Jens
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Publications (10 of 14) Show all publications
Storm, H., Günther, A., Sackey, P. V., Bernhardsson, J. & Bjärtå, A. (2019). Measuring pain: Physiological and self-rated measurements in relation to pain stimulation and anxiety. Acta Anaesthesiologica Scandinavica, 63(5), 668-675
Open this publication in new window or tab >>Measuring pain: Physiological and self-rated measurements in relation to pain stimulation and anxiety
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2019 (English)In: Acta Anaesthesiologica Scandinavica, ISSN 0001-5172, E-ISSN 1399-6576, Vol. 63, no 5, p. 668-675Article in journal (Refereed) Published
Abstract [en]

Introduction: The aim of the present study was to investigate how emotions influence pain, measured by one subjective self-rated measure, the numeric rating scale (NRS), and one objective physiological measure, the number of skin conductance responses (NSCR). Method: Eighteen volunteers were exposed to conditions with pictorial emotional stimuli (neutral, positive, negative), authentic ICU-sound (noise, no-noise) and electrical stimulation (pain, no-pain) individually titrated to induce moderate pain. When using all combinations of picture inducing emotions, sound, and pain, each of these conditions (12 conditions lasting for 60 seconds each) were followed by pain ratings. Ratings of arousal (low to high) and valence (pleasant to unpleasant) were used as indicators of affective state for each condition. Mean NSCR was also measured throughout the experiment for each condition. Results: Even though NRS and NSCR increased during painful stimuli, they did not correlate during the trial. However, NSCR was positively correlated with the strength of the electrical stimulation, r = 0.48, P = 0.046, whereas NRS showed positive correlations with the anxiety level, assessed by affective ratings (arousal, r = 0.61, P < 0.001, and valence, r = 0.37, P < 0.001). Conclusions: The NRS was strongly influenced by affective state, with higher pain ratings during more anxiety-like states, whereas NSCR correlated to the strength of electrical pain stimulation. That reported pain is moderated by anxiety, puts forward a discussion whether reduction of the anxiety level should be considered during analgesia treatment.

Keywords
anxiety, arousal, pain, skin conductance, valence, visual analog scale
National Category
Psychology
Identifiers
urn:nbn:se:miun:diva-35824 (URN)10.1111/aas.13323 (DOI)000464283800014 ()30701545 (PubMedID)
Available from: 2019-03-19 Created: 2019-03-19 Last updated: 2019-05-22Bibliographically approved
Bernhardsson, J., Bjärtå, A. & Sundin, Ö. (2018). Top Down Modulation Despite Fear, Shown By Behavioral and Electrophysiological Activity. In: : . Paper presented at 30th Annual Convention Association for Psychological Science, San Francisco, CA USA, May 24–27, 2018.
Open this publication in new window or tab >>Top Down Modulation Despite Fear, Shown By Behavioral and Electrophysiological Activity
2018 (English)Conference paper, Poster (with or without abstract) (Refereed)
National Category
Psychology (excluding Applied Psychology)
Identifiers
urn:nbn:se:miun:diva-35312 (URN)
Conference
30th Annual Convention Association for Psychological Science, San Francisco, CA USA, May 24–27, 2018
Available from: 2018-12-20 Created: 2018-12-20 Last updated: 2018-12-21Bibliographically approved
Esteves, F., Bernhardsson, J., Jansson, B. & Sundin, Ö. (2017). Emotional arousal and attention bias to female body shapes. In: : . Paper presented at 57 Annual Meeting of the Society for Psychophysiological Research, Vienna, Austria, October 11-15, 2017 (pp. s151-s151). , 54
Open this publication in new window or tab >>Emotional arousal and attention bias to female body shapes
2017 (English)Conference paper, Poster (with or without abstract) (Refereed)
National Category
Social Sciences Psychology
Identifiers
urn:nbn:se:miun:diva-33459 (URN)000415045300606 ()
Conference
57 Annual Meeting of the Society for Psychophysiological Research, Vienna, Austria, October 11-15, 2017
Available from: 2018-04-08 Created: 2018-04-08 Last updated: 2019-05-28Bibliographically approved
Bernhardsson, J., Bjärtå, A., Esteves, F. & Sundin, Ö. (2017). Make no mistake: You are being watched. In: : . Paper presented at 57 Annual Meeting of the Society for Psychophysiological Research, Vienna, Austria, October 11-15, 2017 (pp. s153-s153). , 54
Open this publication in new window or tab >>Make no mistake: You are being watched
2017 (English)Conference paper, Poster (with or without abstract) (Refereed)
National Category
Psychology
Identifiers
urn:nbn:se:miun:diva-33460 (URN)000415045300617 ()
Conference
57 Annual Meeting of the Society for Psychophysiological Research, Vienna, Austria, October 11-15, 2017
Available from: 2018-04-08 Created: 2018-04-08 Last updated: 2019-05-28Bibliographically approved
Bernhardsson, J., Bjärtå, A., Champoux-Larsson, M.-F. & Palmius, J. (2017). PUPIL - A tool for creating and conducting online distributed experimental paradigms. In: : . Paper presented at International Convention of Psychological Science, Vienna, Austria, March 23-25, 2017.
Open this publication in new window or tab >>PUPIL - A tool for creating and conducting online distributed experimental paradigms
2017 (English)Conference paper, Poster (with or without abstract) (Refereed)
National Category
Psychology
Identifiers
urn:nbn:se:miun:diva-32167 (URN)
Conference
International Convention of Psychological Science, Vienna, Austria, March 23-25, 2017
Available from: 2017-11-27 Created: 2017-11-27 Last updated: 2017-11-28Bibliographically approved
Gunther, A., Sackey, P., Storm, H., Wallgren, M., Bernhardsson, J., Sundin, Ö. & Bjärtå, A. (2017). Validation of physiological and self-rated pain assessment tools; how do they act when compared to the nociceptive spinal reflex?: A comparison between physiological and self-rated pain assessment during different affective states. Acta Anaesthesiologica Scandinavica, 61(8), 1047-1047, Article ID 137.
Open this publication in new window or tab >>Validation of physiological and self-rated pain assessment tools; how do they act when compared to the nociceptive spinal reflex?: A comparison between physiological and self-rated pain assessment during different affective states
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2017 (English)In: Acta Anaesthesiologica Scandinavica, ISSN 0001-5172, E-ISSN 1399-6576, Vol. 61, no 8, p. 1047-1047, article id 137Article in journal, Meeting abstract (Other academic) Published
National Category
Psychology
Identifiers
urn:nbn:se:miun:diva-31835 (URN)000407231100143 ()
Available from: 2017-10-13 Created: 2017-10-13 Last updated: 2017-10-13Bibliographically approved
Bernhardsson, J., Bjärtå, A. & Sundin, Ö. (2016). Changes in Event Related Potentials after exposure therapy for spider phobic individuals. Paper presented at 18th World Congress of Psychophysiology of the International Organization of Psychophysiology (IOP), AUG 31-SEP 04, 2016, Havana, CUBA. International Journal of Psychophysiology, 108, 105-106
Open this publication in new window or tab >>Changes in Event Related Potentials after exposure therapy for spider phobic individuals
2016 (English)In: International Journal of Psychophysiology, ISSN 0167-8760, E-ISSN 1872-7697, Vol. 108, p. 105-106Article in journal, Meeting abstract (Other academic) Published
Abstract [en]

The present study was conducted in order to investigate treatment effects in spider phobic individuals on EEG and eye movements. A previous study has shown larger ERP amplitudes in the late positive complex (LPC) post treatment compared to pre treatment during exposure of spider pictures (Leutgeb, Schäfer, & Schienle, 2009). The authors hypothesize that the result might mirror an increase in attention towards the stimuli and reduced attentional avoidance generating enhanced LPC amplitude as a consequence of directing attention to the spider pictures post treatment. In the present study spider fearful individuals (treatment and waitlist group) and control individuals were measured with EEG and Eye tracking during exposure to pictures of spiders, snakes and flowers pre and post treatment. Based on behavioral and self-assessed measures treatment effects were high. Contrary to Leutgeb et al. (2009), our results showed relatively smaller LPC amplitudes post treatment during presentations of spider pictures. Moreover, the eye movement data indicated no avoidance from spider pictures compared to other pictures, neither pre nor post treatment. These results indicate that when individuals attend to visual threat stimuli, LPC amplitude differences follow the pattern of emotional significance and attention allocation.

National Category
Psychology
Identifiers
urn:nbn:se:miun:diva-29063 (URN)10.1016/j.ijpsycho.2016.07.320 (DOI)000382408700319 ()
Conference
18th World Congress of Psychophysiology of the International Organization of Psychophysiology (IOP), AUG 31-SEP 04, 2016, Havana, CUBA
Available from: 2016-10-07 Created: 2016-10-07 Last updated: 2017-11-30Bibliographically approved
Bjärtå, A. & Bernhardsson, J. (2016). Eye movements and Event Related Potentials before and after treatment of spider fear. In: : . Paper presented at 11th congress of SEAS (Sociedad Española para el Estudio de la Ansiedad y el Estrés), Valencia, Spain, 2016.
Open this publication in new window or tab >>Eye movements and Event Related Potentials before and after treatment of spider fear
2016 (English)Conference paper, Oral presentation only (Other academic)
National Category
Psychology
Identifiers
urn:nbn:se:miun:diva-29697 (URN)
Conference
11th congress of SEAS (Sociedad Española para el Estudio de la Ansiedad y el Estrés), Valencia, Spain, 2016
Available from: 2016-12-21 Created: 2016-12-21 Last updated: 2016-12-21Bibliographically approved
Günther, A., Hansen, J. O., Sackey, P., Storm, H., Bernhardsson, J., Sundin, Ö. & Bjärtå, A. (2016). Measuring pain - A validation of physiological and self-rated pain, and an investigation of the relationship between them. In: : . Paper presented at Intensive Care Medicine Experimental, 4, 85-86. 29th annual congress, European Society of Intesive Care Medicine (ESCIM), Milan, Italy, 2016..
Open this publication in new window or tab >>Measuring pain - A validation of physiological and self-rated pain, and an investigation of the relationship between them
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2016 (English)Conference paper, Oral presentation only (Other academic)
National Category
Psychology
Identifiers
urn:nbn:se:miun:diva-29699 (URN)
Conference
Intensive Care Medicine Experimental, 4, 85-86. 29th annual congress, European Society of Intesive Care Medicine (ESCIM), Milan, Italy, 2016.
Available from: 2016-12-21 Created: 2016-12-21 Last updated: 2018-01-10Bibliographically approved
Gunther, A. C., Schandl, A. R., Bernhardsson, J., Bjärtå, A., Wållgren, M., Sundin, Ö., . . . Sackey, P. V. (2016). Pain rather than induced emotions and ICU sound increases skin conductance variability in healthy volunteers. Acta Anaesthesiologica Scandinavica, 60(8), 1111-1120
Open this publication in new window or tab >>Pain rather than induced emotions and ICU sound increases skin conductance variability in healthy volunteers
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2016 (English)In: Acta Anaesthesiologica Scandinavica, ISSN 0001-5172, E-ISSN 1399-6576, Vol. 60, no 8, p. 1111-1120Article in journal (Refereed) Published
Abstract [en]

Background: Assessing pain in critically ill patients is difficult. Skin conductance variability (SCV), induced by the sympathetic response to pain, has been suggested as a method to identify pain in poorly communicating patients. However, SCV, a derivate of conventional skin conductance, could potentially also be sensitive to emotional stress. The purpose of the study was to investigate if pain and emotional stress can be distinguished with SCV.

Methods: In a series of twelve 1-min sessions with SCV recording, 18 healthy volunteers were exposed to standardized electric pain stimulation during blocks of positive, negative, or neutral emotion, induced with pictures from the International Affective PictureSystem (IAPS). Additionally, authentic intensive care unit (ICU) sound was included in half of the sessions. All possible combinations of pain and sound occurred in each block of emotion, and blocks were presented in randomized order.

Results: Pain stimulation resulted in increases in the number of skin conductance fluctuations (NSCF) in all but one participant. During pain-free baseline sessions, the median NSCF was 0.068 (interquartile range 0.013-0.089) and during pain stimulation median NSCF increased to 0.225 (interquartile range 0.146-0.3175). Only small increases in NSCF were found during negative emotions. Pain, assessed with the numeric rating scale, during the sessions with pain stimulation was not altered significantly by other ongoing sensory input.

Conclusion: In healthy volunteers, NSCF appears to reflect ongoing autonomous reactions mainly to pain and to a lesser extent, reactions to emotion induced with IAPS pictures or ICU sound.

National Category
Clinical Medicine
Identifiers
urn:nbn:se:miun:diva-28746 (URN)10.1111/aas.12751 (DOI)000380960400010 ()27465523 (PubMedID)2-s2.0-84982861764 (Scopus ID)
Available from: 2016-09-12 Created: 2016-09-12 Last updated: 2017-11-21Bibliographically approved
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