Publications by authors named "Windt J"

Article Synopsis
  • Out-of-body experiences (OBEs) involve feeling as though you're outside your physical body, and researchers are looking into how these experiences relate to sleep, particularly during REM sleep.
  • The paper suggests that staying aware during transitions to REM sleep might increase the chances of having sleep-related OBEs, and introduces a model to understand how OBEs connect with various sleep states like lucid dreaming and sleep paralysis.
  • The research also aims to explore the brain activity associated with sleep-related OBEs and links these experiences to OBEs that happen while awake through a theory called predictive coding.
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Depersonalisation (DP) is characterized by fundamental alterations to the sense of self that include feelings of detachment and estrangement from one's body. We conducted an online study in healthy participants (n = 514) with DP traits to investigate and quantify the subjective experience of body and self during waking and dreaming, as the vast majority of previous studies focussed on waking experience only. Investigating dreams in people experiencing DP symptoms may help us understand whether the dream state is a 'spared space' where people can temporarily 'retrieve' their sense of self and sense of bodily presence.

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Article Synopsis
  • The study explores how COVID-19-related concerns and anxiety impact people's mind-wandering and dreaming, specifically looking at the emotional quality of these experiences.
  • Researchers used daily logs over two weeks from 172 individuals to track connections between daily worries and the affect experienced during mind-wandering and dreaming.
  • Results showed that poor sleep quality led to more negative feelings in dreams, while consistent COVID-19 worry was linked to increased negative affect in both waking daydreams and nighttime dreams.
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Background: Symptoms of hand osteoarthritis (OA), such as pain, reduced grip strength, loss of range of motion (ROM) and joint stiffness, can lead to impaired hand function and difficulty with daily activities. Rehabilitative interventions with orthoses are commonly in the treatment of hand OA to reduce pain, improve hand strength and ROM, provide support for improved function and help with joint stability.

Purpose: The objectives of this perception-based study were to evaluate the effect of a silicone wrist hand orthoses (SWHO) on pain and daily functioning.

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Objective: Osteoarthritis is one of the most common chronic conditions leading to disability among older people (age 60+ years). Knee osteoarthritis has a significant impact on daily functioning. Pain, stiffness, reduced strength, changes in posture, and reduced knee stability may result in reduced mobility.

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The widely used guidelines for sleep staging were developed for the visual inspection of electrophysiological recordings by the human eye. As such, these rules reflect a limited range of features in these data and are therefore restricted in accurately capturing the physiological changes associated with sleep. Here we present a novel analysis framework that extensively characterizes sleep dynamics using over 7700 time-series features from the hctsa software.

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The diversity of flying animals suggests that countless combinations of flight morphologies and behaviors have evolved with specific lifestyles, thereby exploiting diverse aerodynamic mechanisms. How morphology, flight behavior, and aerodynamic properties together diversify with contrasting ecology remains to be elucidated. We studied the adaptive codivergence in wing shape, flight behavior, and aerodynamic efficiency among butterflies living in different forest strata by combining high-speed videography in the field with morphometric analyses and aerodynamic modeling.

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Pain, stiffness and joint deformity can result in significantly reduced hand function in people with osteoarthritis. Characteristic finger deformities in osteoarthritis are swan neck deformity and boutonnière deformity. Several studies have reported that an orthosis decreases pain and increases function during daily activities for patients with arthritis.

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Attentional lapses occur commonly and are associated with mind wandering, where focus is turned to thoughts unrelated to ongoing tasks and environmental demands, or mind blanking, where the stream of consciousness itself comes to a halt. To understand the neural mechanisms underlying attentional lapses, we studied the behaviour, subjective experience and neural activity of healthy participants performing a task. Random interruptions prompted participants to indicate their mental states as task-focused, mind-wandering or mind-blanking.

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Whether we are awake or asleep is believed to mark a sharp divide between the types of conscious states we undergo in either behavioural state. Consciousness in sleep is often equated with dreaming and thought to be characteristically different from waking consciousness. Conversely, recent research shows that we spend a substantial amount of our waking lives mind wandering, or lost in spontaneous thoughts.

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Training load monitoring is a core aspect of modern-day sport science practice. Collecting, cleaning, analysing, interpreting, and disseminating load data is usually undertaken with a view to improve player performance and/or manage injury risk. To target these outcomes, practitioners attempt to optimise load at different stages throughout the training process, like adjusting individual sessions, planning day-to-day, periodising the season, and managing athletes with a long-term view.

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The current technological age has created exponential growth in the availability of technology and data in every industry, including sport. It is tempting to get caught up in the excitement of purchasing and implementing technology, but technology has a potential dark side that warrants consideration. Before investing in technology, it is imperative to consider the potential roadblocks, including its limitations and the contextual challenges that compromise implementation in a specific environment.

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Shamatha, Transcendental, and Stillness Meditation are said to aim for "contentless" experiences, where mental content such as thoughts, perceptions, and mental images is absent. Silence is understood to be a central feature of those experiences. The main source of information about the experiences is texts by experts from within the three traditions.

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Article Synopsis
  • The Dream Catcher test aims to identify brain data that correlates with subjective experiences of consciousness, bridging the gap between brain activity and phenomenal experience.
  • In a novel experiment, researchers used brain activity from sleeping participants and their dream reports to assess whether they could predict dream experiences based solely on EEG data.
  • Despite multiple attempts and a comprehensive methodology using machine learning, the analysis team could not significantly differentiate between dreamful and dreamless sleep, indicating that EEG spectral power may not provide clear signatures of consciousness.
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Recently, cortical correlates of specific dream contents have been reported, such as the activation of the sensorimotor cortex during dreamed hand clenching. Yet, despite a close resemblance of such activation patterns to those seen during the corresponding wakeful behaviour, the causal mechanisms underlying specific dream contents remain largely elusive. Here, we aimed to investigate the causal role of the sensorimotor cortex in generating movement and bodily sensations during REM sleep dreaming.

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Background: Preseason training develops players' physical capacities and prepares them for the demands of the competitive season. In rugby, Australian football, and American football, preseason training may protect elite players against in-season injury. However, no study has evaluated this relationship at the team level in elite soccer.

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Sleep has been classically described as an all-or-nothing global phenomenon. However, recent research strongly suggests that this view requires tempering. Invasive and non-invasive recordings in animals and humans show that neural activity typically associated with sleep can locally occur during wakefulness.

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Aim: To describe injury and illness incidence during the 2018 Winter Olympic Games (WOG) by Team USA.

Methods: A descriptive observational study. We used registered Team USA Olympic athletes' electronic medical records to review preparticipation health histories and medical encounters immediately prior to and throughout the 2018 WOG.

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Nielsen proposes that a microdynamic approach to experiences occurring in the earliest stages of sleep onset, which he calls microdreams, can shed light on the process of dream imagery formation. I discuss microdreams in the context of simulation views, in which dreaming is defined as the immersive experience of a virtual world centered on a virtual self. I also evaluate his proposal to expand the dimensions included in the oneiragogic spectrum by kinesis.

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The application of scientific principles to inform practice has become increasingly common in professional sports, with increasing numbers of sport scientists operating in this area. The authors believe that in addition to domain-specific expertise, effective sport scientists working in professional sport should be able to develop systematic analysis frameworks to enhance performance in their organization. Although statistical analysis is critical to this process, it depends on proper data collection, integration, and storage.

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Objectives: To systematically identify and qualitatively review the statistical approaches used in prospective cohort studies of team sports that reported intensive longitudinal data (ILD) (>20 observations per athlete) and examined the relationship between athletic workloads and injuries. Since longitudinal research can be improved by aligning the (1) theoretical model, (2) temporal design and (3) statistical approach, we reviewed the statistical approaches used in these studies to evaluate how closely they aligned these three components.

Design: Methodological review.

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