Publications by authors named "Bjorn Severitt"

Article Synopsis
  • The study examines a sensor-based eHealth treatment for pediatric obsessive-compulsive disorder (OCD), highlighting its potential to provide therapy in home settings and collect data on patients' emotional and physical states.
  • It involved 20 adolescents undergoing 14 video sessions of cognitive-behavioral therapy (CBT), using various sensors to track eye movements, heart rate, and behavior patterns during treatment.
  • Results showed high participant satisfaction with this approach, improved therapeutic relationships, and a reduction in OCD symptoms, alongside a discussion of important factors for implementing sensor-supported therapy for young patients.
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In the rapidly advancing field of vision science, traditional research approaches struggle to accurately simulate and evaluate vision correction methods, leading to time-consuming evaluations with limited scope and flexibility. To overcome these challenges, we introduce 'VisionaryVR', a virtual reality (VR) simulation framework designed to enhance optical simulation fidelity and broaden experimental capabilities. VisionaryVR leverages a versatile VR environment to support dynamic vision tasks and integrates comprehensive eye-tracking functionality.

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During calibration, an eye-tracker fits a mapping function from features to a target gaze point. While there is research on which mapping function to use, little is known about how to best estimate the function's parameters. We investigate how different fitting methods impact accuracy under different noise factors, such as mobile eye-tracker imprecision or detection errors in feature extraction during calibration.

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In this manuscript, we describe the soft- and hardware architecture as well as the implementation of a modern Internet of Medical Things (IoMT) system for sensor-assisted telepsychotherapy. It enables telepsychotherapy sessions in which the patient exercises therapy-relevant behaviors in their home environment under the remote supervision of the therapist. Wearable sensor information (electrocardiogram (ECG), movement sensors, and eye tracking) is streamed in real time to the therapist to deliver objective information about specific behavior-triggering situations and the stress level of the patients.

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Article Synopsis
  • Digital health technology enhances psychotherapy for children and adolescents with OCD by offering personalized therapy options, especially through Exposure and Response Prevention therapy, which can be applied in real-life settings rather than just clinical environments.
  • The SSTeP KiZ study combines video therapy with wearable sensors to track physiological and behavioral responses, allowing for a more accurate assessment of stress levels during and outside therapy sessions.
  • Initial pilot study findings indicate that using multiple sensor modalities can effectively detect and quantify stress and anxiety, paving the way for personalized treatment approaches based on individual compulsive behavior in real-world scenarios.
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