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    549 results match your criteria Applied Psychophysiology and Biofeedback [Journal]

    1 OF 11

    Pre-performance Physiological State: Heart Rate Variability as a Predictor of Shooting Performance.
    Appl Psychophysiol Biofeedback 2017 Nov 10. Epub 2017 Nov 10.
    National Institute of Education, Nanyang Technological University, Singapore, Singapore.
    Heart rate variability (HRV) is commonly used in sport science for monitoring the physiology of athletes but not as an indicator of physiological state from a psychological perspective. Since HRV is established to be an indicator of emotional responding, it could be an objective means of quantifying an athlete's subjective physiological state before competition. A total of 61 sport shooters participated in this study, of which 21 were novice shooters, 19 were intermediate shooters, and 21 were advanced level shooters. Read More

    Heart Rate Variability Biofeedback Does Not Substitute for Asthma Steroid Controller Medication.
    Appl Psychophysiol Biofeedback 2017 Nov 9. Epub 2017 Nov 9.
    University of Colorado School of Medicine, Aurora, CO, USA.
    Despite previous findings of therapeutic effects for heart rate variability biofeedback (HRVB) on asthma, it is not known whether HRVB can substitute either for controller or rescue medication, or whether it affects airway inflammation. Sixty-eight paid volunteer steroid naïve study participants with mild or moderate asthma were given 3 months of HRVB or a comparison condition consisting of EEG alpha biofeedback with relaxing music and relaxed paced breathing (EEG+), in a two-center trial. All participants received a month of intensive asthma education prior to randomization. Read More

    Could White Coat Ocular Hypertension Affect to the Accuracy of the Diagnosis of Glaucoma? Relationships Between Anxiety and Intraocular Pressure in a Simulated Clinical Setting.
    Appl Psychophysiol Biofeedback 2017 Nov 8. Epub 2017 Nov 8.
    Research Group on Stress and Health, Department of Basic, Developmental and Educational Psychology, Faculty of Psychology, Universitat Autònoma de Barcelona, Barcelona, Spain.
    Sixty-one healthy subjects participated in a laboratory study carried out in a simulated clinical setting. Anticipatory anxiety-state was assessed at the arrival and immediately after, with no brief phase of adaptation, measurements of intraocular pressure, heart rate, systolic and diastolic blood pressure were collected. At the end of the procedure, anxiety-trait was also assessed. Read More

    No Effects of Successful Bidirectional SMR Feedback Training on Objective and Subjective Sleep in Healthy Subjects.
    Appl Psychophysiol Biofeedback 2017 Oct 31. Epub 2017 Oct 31.
    Ministry of Defense, Central Military Hospital, Utrecht, The Netherlands.
    There is a growing interest in the application of psychophysiological signals in more applied settings. Unidirectional sensory motor rhythm-training (SMR) has demonstrated consistent effects on sleep. In this study the main aim was to analyze to what extent participants could gain voluntary control over sleep-related parameters and secondarily to assess possible influences of this training on sleep metrics. Read More

    Feeling the Insight: Uncovering Somatic Markers of the "aha" Experience.
    Appl Psychophysiol Biofeedback 2017 Oct 26. Epub 2017 Oct 26.
    School of Psychology and Lab of Cognitive Neuroscience, Nanjing Normal University, No. 122, Ninghai Road, Nanjing, 210097, China.
    Whether internal insight can be recognized by experiencing (somatic feeling) remains an unexplored problem. This study investigated the issue by examining potential somatic markers of the "aha" experience occurring at the moment of sudden insight. Participants were required to solve a set of compound remote associates (CRA) problems and were simultaneously monitored via electrodermal and cardiovascular recordings. Read More

    The Impact of Different Visual Feedbacks in User Training on Motor Imagery Control in BCI.
    Appl Psychophysiol Biofeedback 2017 Oct 26. Epub 2017 Oct 26.
    Institute of Theory of Electrical Engineering, Measurement and Information Systems, Warsaw University of Technology, Warsaw, Poland.
    The challenges of research into brain-computer interfaces (BCI) include significant individual differences in learning pace and in the effective operation of BCI devices. The use of neurofeedback training is a popular method of improving the effectiveness BCI operation. The purpose of the present study was to determine to what extent it is possible to improve the effectiveness of operation of sensorimotor rhythm-based brain-computer interfaces (SMR-BCI) by supplementing user training with elements modifying the characteristics of visual feedback. Read More

    Using EEG Frontal Asymmetry to Predict IT User's Perceptions Regarding Usefulness, Ease of Use and Playfulness.
    Appl Psychophysiol Biofeedback 2017 Sep 4. Epub 2017 Sep 4.
    Laboratory of Experimental Ophthalmology, School of Medicine, Aristotle University of Thessaloniki, University Campus, 54124, Thessaloniki, Greece.
    Information systems (IS) community is increasingly interested in employing neuroscience tools and methods in order to develop new theories concerning Human-computer interaction (HCI) and further understand IS acceptance models. The new field of NeuroIS has been introduced to address these issues. NeuroIS researchers have proposed encephalography (EEG), among other neuroscience instruments, as a valuable usability metric, when used effectively in appropriately designed experiments. Read More

    Psychophysiological Reactivity in Couples During a Marital Interaction Task.
    Appl Psychophysiol Biofeedback 2017 Dec;42(4):335-346
    Neuropsychophysiology Lab, CIPsi, School of Psychology, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal.
    The ability to regulate our own physiological arousal when dealing with the emotional expression of our partner is crucial for satisfactory and stable intimate relationships. In previous physiological studies of marital interactions, researchers have found greater levels of psychophysiological arousal for members of the couple in conflictual interactions in comparison with positive interactions. Past researchers have established that intense and prolonged autonomic and neuroendocrine arousal during marital conflict can have negative consequences for mental and physical health. Read More

    Auditory Event-Related Potentials in the Interictal Phase of Migraine Indicate Alterations in Automatic Attention.
    Appl Psychophysiol Biofeedback 2017 Dec;42(4):323-333
    Department of Psychology, University of Memphis, 400 Innovation Dr., Memphis, TN, 38104, USA.
    Migraine has been characterized by interictal cortical hyperresponsivity. We compared event-related brain potentials (ERPs) to unattended tone pairs in migraineurs (interictal) versus non-headache controls, with particular interest in attention-related activity (i.e. Read More

    Respiratory Sinus Arrhythmia in Cognitive Behavioral Therapy for Posttraumatic Stress Symptoms in Children: Preliminary Treatment and Gender Effects.
    Appl Psychophysiol Biofeedback 2017 Dec;42(4):309-321
    Psychiatry and Behavioral Sciences, Tulane University School of Medicine, 1440 Canal St., MS8448, New Orleans, LA, 70112, USA.
    Cognitive behavioral therapy (CBT) is an efficacious treatment for posttraumatic stress disorder (PTSD) symptoms, but the effect of CBT on physiological indicators is largely unknown. Respiratory sinus arrhythmia (RSA) is an established parasympathetic marker of self-regulatory capacity and stress responsivity. The present study tested if and how resting RSA and RSA reactivity changed following treatment among a sample of children (n = 48) who experienced at least one traumatic event and presented with PTSD symptoms. Read More

    Biofeedback-Aided Relaxation Training Helps Emotional Disturbances in Undergraduate Students Before Examination.
    Appl Psychophysiol Biofeedback 2017 Dec;42(4):299-307
    General Psychology, Faculty of Psychology and Educational Sciences, Semnan University, Semnan, Iran.
    The main aim of the present research was to determine the effectiveness of biofeedback-aided relaxation training (BFRT) for alleviating symptoms of depression, anxiety, and stress for undergraduate students as they prepared for their final examinations. In a randomized controlled trial design, 29 male and female students, with heightened levels of depression, anxiety and stress scores on the Depression, Anxiety, and Stress Scale, were chosen and randomly assigned to BFRT or a no-treatment control condition. Subjects assigned to BFRT received eight sessions of BFRT spaced over 4 weeks, during which they were trained to decrease electromyography (EMG) and respiration rate (RESP) and to increase skin temperature (TEMP). Read More

    The More Vivid the Imagination the Better: The Role of the Vividness of Imagination in Vasoconstriction Training and Vasodilatation Training.
    Appl Psychophysiol Biofeedback 2017 Dec;42(4):283-298
    Division of Clinical Psychology and Psychotherapy, Department of Psychology, Philipps-University of Marburg, Gutenbergstraße 18, 35032, Marburg, Germany.
    Blood volume pulse biofeedback represents an effective non-pharmacological treatment for migraine. However, the underlying mechanisms of blood volume pulse biofeedback are still unclear. This study investigated the influence of vividness of imagination, private body consciousness, perfectionism, and general self-efficacy on physiological (blood volume pulse amplitude) and psychological (session performance rated by participants and by trainers) success. Read More

    Analysis of Subjects' Vulnerability in a Touch Screen Game Using Behavioral Metrics.
    Appl Psychophysiol Biofeedback 2017 Dec;42(4):269-282
    Department of Mechanical and Industrial Engineering, Northeastern University, Boston, MA, 02115, USA.
    In this article, we report results on an experimental study conducted with volunteer subjects playing a touch-screen game with two unique difficulty levels. Subjects have knowledge about the rules of both game levels, but only sufficient playing experience with the easy level of the game, making them vulnerable with the difficult level. Several behavioral metrics associated with subjects' playing the game are studied in order to assess subjects' mental-workload changes induced by their vulnerability. Read More

    Characterization of the Sensorimotor Rhythm in 4-Month-Old Infants Born at Term and Premature.
    Appl Psychophysiol Biofeedback 2017 Dec;42(4):257-267
    Facultad de Medicina, Universidad Autónoma del Estado de México, 50180, Toluca, Mexico.
    The sensorimotor rhythm (SMR) is an electroencephalographic rhythm associated with motor and cognitive development observed in the central brain regions during wakefulness in the absence of movement, and it reacts contralaterally to generalized and hemibody movements. The purpose of this work was to characterize the SMR of 4-month-old infants, born either healthy at term or prematurely with periventricular leukomalacia (PVL). Two groups of infants were formed: healthy and premature with PVL. Read More

    Time is of the Essence: A Review of Electroencephalography (EEG) and Event-Related Brain Potentials (ERPs) in Language Research.
    Appl Psychophysiol Biofeedback 2017 Dec;42(4):247-255
    Department of Cognitive Neuroscience and Neuroergonomics, Faculty of Management and Social Communication, Institute of Applied Psychology, Jagiellonian University, ul. Łojasiewicza 4, 30-348, Kraków, Poland.
    The discovery of electroencephalography (EEG) over a century ago has changed the way we understand brain structure and function, in terms of both clinical and research applications. This paper starts with a short description of EEG and then focuses on the event-related brain potentials (ERPs), and their use in experimental settings. It describes the typical set-up of an ERP experiment. Read More

    Thirst at Work Implies More Than Just Inadequate Facilities for Breaks.
    Appl Psychophysiol Biofeedback 2017 Jul 4. Epub 2017 Jul 4.
    Department of Psychology, University of Bern, Fabrikstrasse 8, 3012, Bern, Switzerland.
    Early signs of dehydration, such as headaches, are not unusual in the working population. Even slight deficiencies of water intake may have negative effects on both health and performance. However, little is known about work-related fluid intake. Read More

    Skin Conductance Reactivity to Standardized Virtual Reality Combat Scenes in Veterans with PTSD.
    Appl Psychophysiol Biofeedback 2017 Jun 23. Epub 2017 Jun 23.
    Providence VA Medical Center, 830 Chalkstone Ave, Providence, RI, 02908, USA.
    Interest in virtual reality (VR) as a clinical tool to augment posttraumatic stress (PTSD) treatment has grown substantially in recent years due to advances in VR technology. Moreover, its potential assisted use in the PTSD diagnostic process has been recognized. In this study we examined physiological responding, skin conductance, to a standardized presentation of non-personalized combat-related VR events (e. Read More

    Relevance of the Clinical and Psychophysiological Variables in the Dyssynergic Defecation: A Comparative Study in Elderly Subjects.
    Appl Psychophysiol Biofeedback 2017 Jun 21. Epub 2017 Jun 21.
    Department of Psychology, Clinical and Health Psychology Research Unit, University of A Coruña, A Coruña, Spain.
    The relevance of several clinical and psychophysiological variables in the dyssynergic defecation in elderly subjects was investigated in this study. To accomplish this, 30 elderly subjects (10 without anorectal disorders, 10 with chronic constipation and 10 with dyssynergic defecation) were repeatedly assessed once per week for 4 weeks, with the following measures being collected at each session: EMG-activity (µV) of the external anal sphincter (at rest, during squeezing, and during straining to defecate), stool frequency, difficulty defecation level, pain grade during defecation, and satisfaction level after evacuation. A 3 (group) × 4 (sessions) mixed-measures MANOVA revealed a significant main effect for group (Wilks's lambda = 0. Read More

    Reducing Anxiety and Improving Academic Performance Through a Biofeedback Relaxation Training Program.
    Appl Psychophysiol Biofeedback 2017 Jun 16. Epub 2017 Jun 16.
    Department of Social Psychology and Behavioral Sciences Methodology, Faculty of Psychology, University of the Basque Country (UPV/EHU), Tolosa Avenue, 70, 20018, San Sebastian, Spain.
    The aim of this study was to analyze the influence of a biofeedback relaxation training program on anxiety and academic performance. The program consisted of five biofeedback sessions coupled with three training activities focused on deep breathing, guided imagery, and muscle relaxation. The participants were second-year psychology undergraduates from the University of the Basque Country (UPV/EHU, northern Spain). Read More

    Transitive Versus Intransitive Complex Gesture Representation: A Comparison Between Execution, Observation and Imagination by fNIRS.
    Appl Psychophysiol Biofeedback 2017 Jun 6. Epub 2017 Jun 6.
    Department of Psychology, Catholic University of the Sacred Heart, Largo Gemelli, 1, 20123, Milan, Italy.
    The aim of the present study was to examine cortical correlates of motor execution, motor observation and motor imagery of hand complex gestures, in particular by comparing meaningful gestures implying the use of an object (transitive action) or not (intransitive action). Functional near-infrared spectroscopy (fNIRS) was used to verify the presence of partial overlapping between some cortical areas involved in those different tasks. Participants were instructed to observe videos of transitive vs. Read More

    Effect of Heart Rate Variability Biofeedback on Sport Performance, a Systematic Review.
    Appl Psychophysiol Biofeedback 2017 Jun 1. Epub 2017 Jun 1.
    School of Medicine, University of Costa Rica, San José, Costa Rica.
    Aim is to determine if the training with heart rate variability biofeedback allows to improve performance in athletes of different disciplines. Methods such as database search on Web of Science, SpringerLink, EBSCO Academic Search Complete, SPORTDiscus, Pubmed/Medline, and PROQUEST Academic Research Library, as well as manual reference registration. The eligibility criteria were: (a) published scientific articles; (b) experimental studies, quasi-experimental, or case reports; (c) use of HRV BFB as main treatment; (d) sport performance as dependent variable; (e) studies published until October 2016; (f) studies published in English, Spanish, French or Portuguese. Read More

    Increased HPA Axis Activity and Serum Tryptophan in Naswar (Dipping Tobacco) Users: A Case-Control Study.
    Appl Psychophysiol Biofeedback 2017 May 22. Epub 2017 May 22.
    Clinical Biochemistry and Psychopharmacology Research Unit, Department of Biochemistry, University of Karachi, Karachi, 75270, Pakistan.
    Nicotine is the principal addictive agent present in Naswar, a smokeless dipping tobacco product. 5-Hydroxytryptamine (5-HT) has been implicated in the reinforcement properties of nicotine. Also, the hypothalamic-pituitary-adrenal (HPA) axis is of vital importance in evaluating the response to stress and nicotine addiction. Read More

    Brief Biofeedback Intervention on Anxious Freshman University Students.
    Appl Psychophysiol Biofeedback 2017 May 19. Epub 2017 May 19.
    School of Health, University of Aveiro, Edifício 30, Agras do Crasto - Campus Universitário de Santiago, 3810-193, Aveiro, Portugal.
    The increasing number of mental health disorders on university students represents a growing problem with negative impact on this population. Stress and anxiety issues are two of most predominant problems in this population and most campus health services have limited resources to face them. Research has provided evidence about biofeedback effectiveness. Read More

    Erratum to: Effects of Mental Stress Induction on Heart Rate Variability in Patients with Panic Disorder.
    Appl Psychophysiol Biofeedback 2017 Jun;42(2):95
    Department of Psychotherapy and Psychosomatic Medicine, University Hospital Carl Gustav Carus Dresden, Technische Universitaet Dresden, Fetscherstr. 74, 01307, Dresden, Germany.

    Objectively-Measured Free-Living Physical Activity and Heart Rate Recovery.
    Appl Psychophysiol Biofeedback 2017 Jun;42(2):127-132
    Department of Health, Exercise Science and Recreation Management, The University of Mississippi, P. O. Box 1848, University, MS, 38677, USA.
    The purpose of this study was to examine the association of free-living, objectively-measured physical activity on treadmill-based heart rate recovery (HRR), a parameter known to associate with morbidity and mortality. Data was used from 2003 to 2004 NHANES. Physical activity was assessed via accelerometry, with HRR recovery assessed from a treadmill-based test. Read More

    Biofeedback Training in Crisis Managers: A Randomized Controlled Trial.
    Appl Psychophysiol Biofeedback 2017 Jun;42(2):117-125
    Institute of Psychology, UMIT-University for Health Sciences Medical Informatics and Technology, Eduard Wallnöfer-Zentrum 1, 16060, Hall in Tirol, Austria.
    Working in crisis environments represents a major challenge, especially for executive personnel engaged in directing disaster operations, i.e. crisis managers. Read More

    Resonance Frequency Breathing Biofeedback to Reduce Symptoms of Subthreshold PTSD with an Air Force Special Tactics Operator: A Case Study.
    Appl Psychophysiol Biofeedback 2017 Jun;42(2):139-146
    Air Force Special Operations Command, Fort Bragg, NC, USA.
    The prevalence rates of post-traumatic stress disorder (PTSD) have been estimated to be several times higher in military populations compared to the national average. Special Tactics operators are a group that is more likely to avoid seeking psychological care due to the stigma and other consequences the diagnosis may have on their military careers. There is a need for more effective and less stigmatizing interventions to treat this population. Read More

    Effects of Partial Absence of Visual Feedback Information on Gait Symmetry.
    Appl Psychophysiol Biofeedback 2017 Jun;42(2):107-115
    Department of Biomedical Engineering, The Gordon and Jill Bourns College of Engineering, California Baptist University, 8432 Magnolia Avenue, Riverside, CA, 92504, USA.
    The incorporation of real-time visual feedback during gait rehabilitation can improve the efficacy of training. Our prior work demonstrated that the imposed distortion of simple visual feedback information of step lengths entails an unintentional adaptive process in the subjects' spatial gait pattern, thereby suggesting the important role of implicit learning in the context of gait rehabilitation that employs visual feedback. The purpose of this study was to investigate whether the removal of a portion of visual feedback information-after it had initially been provided-had any impact on gait symmetry. Read More

    Patient-Controlled Biofeedback Device for the Treatment of Fecal Incontinence: A Pilot Study.
    Appl Psychophysiol Biofeedback 2017 Jun;42(2):133-137
    Department of Biomedical Engineering, Hospital de Clinicas de Porto Alegre, Federal University of Rio Grande do Sul, Porto Alegre, Brazil.
    Although biofeedback has been used as a first-line therapy for fecal incontinence, it is known to be time consuming and demands attendance to a hospital during the whole period of treatment. In this study, we describe a new biofeedback device specifically developed for home treatment of fecal incontinence, which consists of a microprocessor controlled unit able to register and store the anal pressure waves corresponding to exercises performed by patients at home. In order to test the new device, a pilot study including ten patients with fecal incontinence was conducted. Read More

    Maladaptive Cardiac Autonomic Control during a Stress Reactivity Assessment Among Primary Care Patients with Metabolic Syndrome.
    Appl Psychophysiol Biofeedback 2017 Jun;42(2):97-105
    Department of Psychology, College of Sciences, University of Central Florida, 4111 Pictor Lane, Orlando, FL, 32816, USA.
    Metabolic syndrome (MetS) comprises a constellation of metabolic abnormalities that substantially increase risk for chronic illnesses. Autonomic dysregulation is closely linked to MetS, and while pathophysiological models often address chronic stress exposure, none have examined how such physiological contributions operate situationally, in a clinical setting. We used ambulatory impedance cardiography to examine indicators of cardiac autonomic control (CAC) in a sample of 50 adult primary care patients with and without MetS. Read More

    A Pilot Study on the Effects of Slow Paced Breathing on Current Food Craving.
    Appl Psychophysiol Biofeedback 2017 Mar;42(1):59-68
    Institute of Psychology, University of Würzburg, Würzburg, Germany.
    Heart rate variability biofeedback (HRV-BF) involves slow paced breathing (approximately six breaths per minute), thereby maximizing low-frequent heart rate oscillations and baroreflex gain. Mounting evidence suggests that HRV-BF promotes symptom reductions in a variety of physical and mental disorders. It may also positively affect eating behavior by reducing food cravings. Read More

    Upper Alpha Based Neurofeedback Training in Chronic Stroke: Brain Plasticity Processes and Cognitive Effects.
    Appl Psychophysiol Biofeedback 2017 Mar;42(1):69-83
    Department of Psychology, University of Graz, Universitaetsplatz 2/III, 8010, Graz, Austria.
    In the present study, we investigated the effects of upper alpha based neurofeedback (NF) training on electrical brain activity and cognitive functions in stroke survivors. Therefore, two single chronic stroke patients with memory deficits (subject A with a bilateral subarachnoid hemorrhage; subject B with an ischemic stroke in the left arteria cerebri media) and a healthy elderly control group (N = 24) received up to ten NF training sessions. To evaluate NF training effects, all participants performed multichannel electroencephalogram (EEG) resting measurements and a neuropsychological test battery assessing different cognitive functions before and after NF training. Read More

    A Multisite Benchmarking Trial of Capnometry Guided Respiratory Intervention for Panic Disorder in Naturalistic Treatment Settings.
    Appl Psychophysiol Biofeedback 2017 Mar;42(1):51-58
    Department of Biostatistics, Yale University School of Public Health, 60 College St., New Haven, CT, 06520, USA.
    Panic disorder (PD) is associated with hyperventilation. The efficacy of a brief respiratory feedback program for PD has been established. The aim of the present study was to expand these results by testing a similar program with more clinically representative patients and settings. Read More

    Attenuating Physiological Arousal Through the Manipulation of Simple Hand Movements.
    Appl Psychophysiol Biofeedback 2017 Mar;42(1):39-50
    University of Wisconsin-Milwaukee, Milwaukee, WI, USA.
    The current study tests whether manipulating simple motor movements can regulate one's physiological reactivity to negative images. Healthy college age participants were randomly assigned to no tapping, steady tapping, or slow tapping conditions and viewed two sets of 15 negative images from the international affective picture system. Participants viewed the first image set without manipulation. Read More

    Implicit Learning of a Finger Motor Sequence by Patients with Cerebral Palsy After Neurofeedback.
    Appl Psychophysiol Biofeedback 2017 Mar;42(1):27-37
    Research Unit of the Buhl-Strohmaier Foundation for Pediatric Neuroorthopaedics and Cerebral Palsy, Orthopaedic Department, Klinikum Rechts der Isar, Technische Universität München, Ismaninger Strasse 22, Munich, Germany.
    Facilitation of implicit learning of a hand motor sequence after a single session of neurofeedback training of alpha power recorded from the motor cortex has been shown in healthy individuals (Ros et al., Biological Psychology 95:54-58, 2014). This facilitation effect could be potentially applied to improve the outcome of rehabilitation in patients with impaired hand motor function. Read More

    Attempts to Suppress Episodic Memories Fail but do Produce Demand: Evidence from the P300-Based Complex Trial Protocol and an Implicit Memory Test.
    Appl Psychophysiol Biofeedback 2017 Mar;42(1):13-26
    Psychology Department, Northwestern University, Evanston, IL, USA.
    Instructions to voluntarily suppress memories of a mock crime have been reported to result in decreased P300 amplitude during a P300-based concealed information test (CIT) and reduced autobiographical Implicit Association Test (aIAT) D scores, supporting successful suppression. However, one such study, (Hu et al., Psychological science 26(7):1098-1106, 2015) used the P300-based Complex Trial Protocol with a 50-50 target to nontarget ratio, which could impose much response switching and thereby drain cognitive resources, also resulting in reduced P300. Read More

    Effects of Acute Stress on Decision Making.
    Appl Psychophysiol Biofeedback 2017 Mar;42(1):1-12
    Department of Psychology, University at Albany, State University of New York, 1400 Washington Ave, Albany, NY, 12222, USA.
    The study examined the effects of a social stressor (Trier Social Stress Test) on 24 male and 32 female college students' affective and physiological reactivity and their subsequent performance on a decision-making task (Iowa Gambling Task). The 56 participants were randomly assigned to a social stressor or a control condition. Compared to controls, participants in the stress condition responded with higher heart rates and skin conductance responses, reported more negative affect, and on the decision-making task made less advantageous choices. Read More

    Effects of Mental Stress Induction on Heart Rate Variability in Patients with Panic Disorder.
    Appl Psychophysiol Biofeedback 2017 Jun;42(2):85-94
    Department of Psychotherapy and Psychosomatic Medicine, University Hospital Carl Gustav Carus Dresden, Technische Universitaet Dresden, Fetscherstr. 74, 01307, Dresden, Germany.
    Reduced heart rate variability (HRV) constitutes a widely used marker of cardiac autonomic inflexibility which has been linked to disorders such as panic disorder (PD). To date, the pathophysiological mechanisms whereby panic leads to attenuated HRV are not fully elucidated. We aimed to investigate the hypothesis that PD patients show pathological reactivity both in response to interoceptive and psychosocial stress in comparison to healthy individuals. Read More

    Increasing Performance of Professional Soccer Players and Elite Track and Field Athletes with Peak Performance Training and Biofeedback: A Pilot Study.
    Appl Psychophysiol Biofeedback 2016 12;41(4):421-430
    Expertise Group Health and Wellbeing, Saxion University of Applied Sciences, M.H. Tromplaan 28, 7500 KB, Enschede, The Netherlands.
    The aim of this pilot study was to investigate the effects of an intervention consisting of mental coaching combined with either electro encephalogram (EEG) alpha power feedback or heart rate variability (HRV) feedback on HRV, EEG outcomes and self-reported factors related to stress, performance, recovery and sleep quality in elite athletes. A prospective pilot study was performed with two distinct cohorts. Soccer players were provided with four sessions of mental coaching combined with daily HRV biofeedback (Group A); track and field athletes were provided with four sessions of mental coaching in combination with daily neurofeedback (Group B). Read More

    Electrophysiological and Behavioral Outcomes of Berard Auditory Integration Training (AIT) in Children with Autism Spectrum Disorder.
    Appl Psychophysiol Biofeedback 2016 Dec;41(4):405-420
    IDEA Training Center, North Haven, CT, USA.
    Autism is a pervasive developmental disorder of childhood characterized by deficits in social interaction, language, and stereotyped behaviors along with a restricted range of interests. It is further marked by an inability to perceive and respond to social and emotional signals in a typical manner. This might due to the functional disconnectivity of networks important for specific aspects of social cognition and behavioral control resulting in deficits of sensory information integration. Read More

    Posttraumatic Stress Disorder (PTSD) Patients Exhibit a Blunted Parasympathetic Response to an Emotional Stressor.
    Appl Psychophysiol Biofeedback 2016 Dec;41(4):395-404
    Department of Psychosomatic Medicine and Psychotherapy, German Centre for Cardiovascular Research (DZHK), University of Göttingen Medical Centre, von-Siebold-Str. 5, 37075, Göttingen, Germany.
    Diminished parasympathetic reactivity is a physiological feature of posttraumatic stress disorder (PTSD). The objective of this study was to compare female PTSD patients with non-traumatized healthy women with respect to autonomic cardiovascular regulation during exposure to two stressors. Hospitalized PTSD patients (n = 52) and controls (n = 37) completed standardized laboratory-based stress testing including a mental arithmetic test and a standardized audiotape recording of a crying infant. Read More

    Heart Rate Variability, Flow, Mood and Mental Stress During Yoga Practices in Yoga Practitioners, Non-yoga Practitioners and People with Metabolic Syndrome.
    Appl Psychophysiol Biofeedback 2016 Dec;41(4):381-393
    School of Health Sciences, RMIT University, Bundoora, 3083, Australia.
    Heart Rate Variability (HRV) and respiratory sinus arrhythmia are directly associated with autonomic flexibility, self-regulation and well-being, and inversely associated with physiological stress, psychological stress and pathology. Yoga enhances autonomic activity, mitigates stress and benefits stress-related clinical conditions, yet the relationship between autonomic activity and psychophysiological responses during yoga practices and stressful stimuli has not been widely explored. This experimental study explored the relationship between HRV, mood states and flow experiences in regular yoga practitioners (YP), non-yoga practitioners (NY) and people with metabolic syndrome (MetS), during Mental Arithmetic Stress Test (MAST) and various yoga practices. Read More

    Anticipatory Electrodermal Response as a Differentiating Somatic Marker Between Children with ADHD and Controls.
    Appl Psychophysiol Biofeedback 2016 Dec;41(4):375-380
    Department of Psychology, State University of New York College at Cortland, Old Main Room 132, P.O. Box 2000, Cortland, NY, 13045, USA.
    Six children with Attention Deficit Hyperactivity Disorder (ADHD) and five control children between the ages of 9 and 11 years were administered an adapted version of the Iowa Gambling Task while measuring anticipatory electrodermal response (EDR). Anticipatory EDR measures were compared between groups. Results indicate that the ADHD group exhibited significantly lower autonomic reactivity to anticipated consequences, evidencing a neuropsychological profile similar to patients with lesions in the ventromedial prefrontal cortex. Read More

    Functional Somatic Syndromes: Skin Temperatures and Activity Measurements Under Ambulatory Conditions.
    Appl Psychophysiol Biofeedback 2016 Dec;41(4):363-373
    Department of Forensic Psychiatry, University Psychiatric Clinics Basel, Wilhelm Klein-Str. 27, 4012, Basel, Switzerland.
    Functional somatic syndromes are mostly associated with pain and emotional distress. As one marker for the autonomic stress response, the distal skin temperature decreases during psychological stress. In patients with functional somatic syndromes, the distal skin temperature under baseline conditions (without stress induction) is usually lower than in healthy subjects, which could be due to the sustained presence of pain-related stress in such patients. Read More

    Catching a Deceiver in the Act: Processes Underlying Deception in an Interactive Interview Setting.
    Appl Psychophysiol Biofeedback 2016 Sep;41(3):349-62
    Department of Psychology of Conflict, Risk and Safety, University of Twente, Enschede, The Netherlands.
    Lying is known to evoke stress and cognitive load. Both form cues to deception and lead to an increase in sympathetic nervous system (SNS) activity. But in reality, deceivers stick to the truth most the time and only lie occasionally. Read More

    Exploring the Impact of Short- and Long-Term Hydrocortisone Replacement on Cognitive Function, Quality of Life and Catecholamine Secretion: A Pilot Study.
    Appl Psychophysiol Biofeedback 2016 Sep;41(3):341-7
    Department of Medicine I, Christian-Albrechts-University, Kiel, Germany.
    Hydrocortisone (HC) substitution is essential in the treatment for patients with adrenal insufficiency (AI). Current replacement regimens however only incompletely mimic the physiological circadian rhythm of cortisol secretion, thereby resulting in subclinical temporary hypo- and hypercortisolism. Several studies point toward impairment of cognitive functions under these conditions, in part due to affected catecholamine secretion. Read More

    Pupil Size Changes as an Active Information Channel for Biofeedback Applications.
    Appl Psychophysiol Biofeedback 2016 Sep;41(3):331-9
    Department of General Psychology, Ulm University, Ulm, Germany.
    Pupil size is usually regarded as a passive information channel that provides insight into cognitive and affective states but defies any further control. However, in a recent study (Ehlers et al. 2015) we demonstrate that sympathetic activity indexed by pupil dynamics allows strategic interference by means of simple cognitive techniques. Read More

    The Sensorium: Psychophysiological Evaluation of Responses to a Multimodal Neurofeedback Environment.
    Appl Psychophysiol Biofeedback 2016 Sep;41(3):315-29
    Research Section of Applied Consciousness Sciences, Department of Psychosomatic Medicine, University Hospital Regensburg, Franz-Joseph-Strauß-Allee 11, 93053, Regensburg, Germany.
    The Sensorium is a multimodal neurofeedback environment that reflects a person's physiological state by presenting physiological signals via orchestral sounds from a speaker and multi-coloured lights projected onto a white surface. The software manages acquisition, real-time processing, storage, and sonification of various physiological signals such as the electroencephalogram (EEG) or electrocardiogram (ECG). Each of the 36 participants completed 6 interventional conditions consisting of three different Sensorium-phases with EEG and ECG feedback, a mindfulness meditation, a guided body scan exercise, and a Pseudo-Sensorium using pre-recorded data that did not reflect the subject's own physiology. Read More

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