TY - JOUR A1 - Schmidt, Jennifer A1 - Martin, Alexandra T1 - „Smile away your cravings” – Facial feedback modulates cue-induced food cravings JF - Appetite Y1 - 2017 SN - 0195-6663 VL - 116 SP - 536 EP - 543 ER - TY - JOUR A1 - Schmidt, Jennifer A1 - Martin, Alexandra T1 - The influence of physiological and psychological learning mechanisms in neurofeedback vs. mental imagery against binge eating JF - Applied Psychophysiology and Biofeedback Y1 - 2020 U6 - http://dx.doi.org/10.1007/s10484-020-09486-9 VL - 45 IS - 4 SP - 293 EP - 305 ER - TY - JOUR A1 - Gitzen, Harald A1 - Schmidt, Jennifer A1 - Martin, Alexandra T1 - Subjective and physiological reactivity to emotional stressors in somatic symptom disorder JF - International Journal of Psychophysiology N2 - Objective: We examined whether autonomic flexibility to experimentally presented stressors is reduced in somatic symptom disorder (SSD) as this would point to reduced vagal control as a proposed indicator of emotion regulation deficits. Method: In this experimental study, the influence of health-related and social stressors on subjective and physiological reactivity was investigated in 29 subjects with SSD without any medical condition SSD(mc−), 33 subjects with SSD with medical condition SSD(mc+) and 32 healthy controls at the age from 18 to 70 years. Self-report and physiological variables were measured before and after/during stressor exposure, using state ratings of symptom intensity, disability, tension and mood, heart rate (HR), and heart rate variability (HRV). Results: Overall, the tension increased and the mood worsened after exposure to stressors compared to pre-exposure. Compared to HC, the two SSD groups showed higher symptom intensity, disability, tension and worse mood. The SSD(mc−) group revealed higher HR than HC (p = .012, d = −0.77). Compared to pre-exposure, symptom impairment increased after social stressor exposure in SSD(mc−) (p < .001, d = 1.36). HRV-root mean square of successive differences (RMSSD) only decreased in HC during exposure (p = .003, d = −1.09), not in the SSD groups. The two SSD groups did not differ in their reactivity to stressors. Conclusion: HRV in SSD, seems to respond less flexibly to stressors, potentially reflecting overall physiological disturbance through reduced parasympathetic influence on HR. Stress reactivity in SSD(mc−) and SSD(mc+) do not seem to differ. Y1 - 2024 U6 - http://dx.doi.org/10.1016/j.ijpsycho.2023.112273 VL - 2024 IS - 195 SP - 112273 EP - 112273 ER - TY - JOUR A1 - Opwis, Mareile A1 - Bartel, Eva Catrin A1 - Salewski, Christel A1 - Schmidt, Jennifer T1 - Sorry—Bad Habit! Validation of the German Self-Report Habit Index with a Test for Its Relation to Potentially Addictive Forms of Health-Risk Behaviors JF - International Journal of Mental Health and Addiction N2 - Habits are highly automated behaviors that have received renewed attention in addiction research. The Self-Report Habit Index (SRHI) is a widely used measure of habits. Two cross-sectional online studies aimed at validating a German version of the SRHI to assess two everyday health-risk behaviors: caffeine consumption and smartphone/tablet use. In both studies (N = 1310), the SRHI scales (one adapted for caffeine consumption, one for smartphone/tablet use), as well as corresponding addiction scales and health outcomes (study 1), or established validity measures (study 2), were assessed. Both SRHI scales showed satisfying item characteristics, high internal consistencies (αs > .90), adequate construct validity, and a three-factorial solution with a satisfying model fit (CFI/TLIs > .95, SRMRs ≤ 0.05). Highest correlations emerged between SRHI and addiction scales. The studies show that the German SRHI can be used to validly assess health-risk behaviors. The observed strong correlations of the SRHI scales with addiction scales suggest that (self-reported) habit is indeed an important aspect to consider in addiction research. KW - Habit KW - Addiction KW - Caffeine KW - Smartphone KW - Self Report Habit Index Y1 - 2023 UR - https://link.springer.com/article/10.1007/s11469-023-01057-3 U6 - http://dx.doi.org/https://doi.org/10.1007/s11469-023-01057-3 SN - 1557-1882 ER - TY - JOUR A1 - Schmidt, Jennifer A1 - Martin, Alexandra T1 - Neurofeedback reduces overeating episodes in female restrained eaters - A randomized controlled pilot-study JF - Applied Psychophysiology and Biofeedback Y1 - 2015 SN - 1090-0586 VL - 40 IS - 4 SP - 283 EP - 295 ER - TY - JOUR A1 - Jensen, Martin A1 - Hüttenrauch, Eva A1 - Schmidt, Jennifer A1 - Andersson, Gerhard A1 - Chavanon, Mira-Lynn A1 - Weise, Cornelia T1 - Neurofeedback for tinnitus: study protocol for a randomised controlled trial assessing the specificity of an alpha/delta neurofeedback training protocol in alleviating both sound perception and psychological distress in a cohort of chronic tinnitus sufferers JF - Trials Y1 - 2020 UR - https://pubmed.ncbi.nlm.nih.gov/32370767/ U6 - http://dx.doi.org/10.1186/s13063-020-04309-y VL - 21 IS - 1 SP - 382 EP - 382 ER - TY - JOUR A1 - Schmidt, Jennifer A1 - Kärgel, Christian A1 - Opwis, Mareile T1 - Neurofeedback for substance use and overeating – Current applications and future directions JF - Current Addiction Reports Y1 - 2017 SN - 2196-2952 VL - 4 IS - 2 SP - 116 EP - 131 ER - TY - BOOK A1 - Schmidt, Jennifer T1 - Neurofeedback as a psychophysiological treatment for disinhibited eating - An analysis of efficacy and mechanisms Y1 - 2017 PB - ePub der Bergischen Universität Wuppertal CY - Wuppertal ER - TY - JOUR A1 - Schmidt, Jennifer A1 - Martin, Alexandra T1 - Neurofeedback against binge eating – A randomized controlled trial in a female subclinical threshold sample JF - European Eating Disorders Review Y1 - 2016 SN - 1072-4133 VL - 24 IS - 5 SP - 406 EP - 416 ER - TY - JOUR A1 - Langner, Tobias A1 - Schmidt, Jennifer A1 - Fischer, Alexander T1 - Is it really love? A comparative investigation of the emotional nature of brand and interpersonal love JF - Psychology & Marketing Y1 - 2015 SN - 0742-6046 VL - 32 IS - 6 SP - 624 EP - 634 ER -