Matthew Patterson
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View article: 0251 Quantifying Scratch During Sleep in Atopic Dermatitis Patients with Thermal Camera Technology
0251 Quantifying Scratch During Sleep in Atopic Dermatitis Patients with Thermal Camera Technology Open
Introduction Scratching during the sleep period in atopic dermatitis patients results in inflammation or a lesion on the affected area and further perpetuates the itch-scratch cycle. Night scratching disrupts patients sleep and negatively …
View article: Domain Adversarial Convolutional Neural Network Improves the Accuracy and Generalizability of Wearable Sleep Assessment Technology
Domain Adversarial Convolutional Neural Network Improves the Accuracy and Generalizability of Wearable Sleep Assessment Technology Open
Wearable accelerometers are widely used as an ecologically valid and scalable solution for long-term at-home sleep monitoring in both clinical research and care. In this study, we applied a deep learning domain adversarial convolutional ne…
View article: 0955 Evaluating state-of-the-art algorithms for sleep-wake classification using wrist-worn wearable devices
0955 Evaluating state-of-the-art algorithms for sleep-wake classification using wrist-worn wearable devices Open
Introduction Over the last 40 years, a variety of algorithms have been proposed to classify sleep-wake from wrist acceleration data. Input features into these algorithms have been activity counts or raw acceleration. The algorithms propose…
View article: 40 years of actigraphy in sleep medicine and current state of the art algorithms
40 years of actigraphy in sleep medicine and current state of the art algorithms Open
View article: Stepping towards More Intuitive Physical Activity Metrics with Wrist-Worn Accelerometry: Validity of an Open-Source Step-Count Algorithm
Stepping towards More Intuitive Physical Activity Metrics with Wrist-Worn Accelerometry: Validity of an Open-Source Step-Count Algorithm Open
Stepping-based targets such as the number of steps per day provide an intuitive and commonly used method of prescribing and self-monitoring physical activity goals. Physical activity surveillance is increasingly being obtained from wrist-w…
View article: Domain Adversarial Convolutional Neural Network Improves the Accuracy and Generalizability of Wearable-based Sleep Assessment Technology
Domain Adversarial Convolutional Neural Network Improves the Accuracy and Generalizability of Wearable-based Sleep Assessment Technology Open
Wearable accelerometers are widely used as an ecologically valid and scalable solution for long-term at-home sleep monitoring in both clinical research and care. The levels of accuracy with accelerometry-based sleep outcomes, however, have…
View article: Performance analyses of step-counting algorithms using wrist accelerometry
Performance analyses of step-counting algorithms using wrist accelerometry Open
Step count is one of the most used real-world (RW) outcomes for understanding physical functioning, activity, and overall quality of life. In the current investigation, we systematically evaluated the performances of modern wrist-accelerom…
View article: 40 years of actigraphy in sleep medicine: where do we stand on the state-of-the-art algorithms?
40 years of actigraphy in sleep medicine: where do we stand on the state-of-the-art algorithms? Open
For the last 40 years, actigraphy or wearable accelerometry has provided an objective, low- burden and ecologically valid approach to assess real-world sleep and circadian patterns, contributing valuable data to epidemiological and clinica…
View article: Performance analyses of step-counting algorithms using wrist accelerometry
Performance analyses of step-counting algorithms using wrist accelerometry Open
Step count is one of the most used real-world (RW) outcomes for understanding physical functioning, activity, and overall quality of life. In the current investigation, we systematically evaluated the performances of modern wrist-accelerom…
View article: Stepping up with GGIR: Validity of step cadence derived from wrist-worn research-grade accelerometers using the verisense step count algorithm
Stepping up with GGIR: Validity of step cadence derived from wrist-worn research-grade accelerometers using the verisense step count algorithm Open
The Verisense Step Count Algorithm facilitates generation of steps from wrist-worn accelerometers. Based on preliminary evidence suggesting a proportional bias with overestimation at low steps/day, but underestimation at high steps/day, th…
View article: Experimental investigation of fire spread across a vegetative fuel bed incorporating the effect of wind velocity
Experimental investigation of fire spread across a vegetative fuel bed incorporating the effect of wind velocity Open
Wind, moisture content, and density of fuel are three environmental factors that affect the rate of fire spread in wildland fires by changing the rate of convection, radiation, and conduction heat transfer from the flames and burned fuels …
View article: A systematic study of the reliability of fire pattern indicators used in wildland fire investigation
A systematic study of the reliability of fire pattern indicators used in wildland fire investigation Open
This work presents the preliminary results obtained from the first set of six field experiments conducted within the scope of a project focused on the systematic evaluation of the reliability of fire pattern indicators used in wildland fir…
View article: Flame spread and combustion dynamics in pine litter under unsteady wind conditions
Flame spread and combustion dynamics in pine litter under unsteady wind conditions Open
Understanding flame spread and combustion dynamics in surface fuels is important for both planning and evaluating the impact of prescribed fires. However, prescribed fires tend to be conducted under light and unsteady wind conditions as co…
View article: Simulations of three-dimensional water flow with discrete classes of soil structure
Simulations of three-dimensional water flow with discrete classes of soil structure Open
Simulation of water flow in a soil volume requires the characterization of the soil hydraulic properties in three dimensions. Such characterization is expensive and requires destructive sampling. The implementation of a non-destructive met…
View article: SleepNet: automated sleep analysis via dense convolutional neural network using physiological time series
SleepNet: automated sleep analysis via dense convolutional neural network using physiological time series Open
In this work, a dense recurrent convolutional neural network (DRCNN) was constructed to detect sleep disorders including arousal, apnea and hypopnea using Polysomnography (PSG) measurement channels provided in the 2018 Physionet challenge …
View article: SleepNet: Automated Sleep Analysis via Dense Convolutional Neural\n Network Using Physiological Time Series
SleepNet: Automated Sleep Analysis via Dense Convolutional Neural\n Network Using Physiological Time Series Open
In this work, a dense recurrent convolutional neural network (DRCNN) was\nconstructed to detect sleep disorders including arousal, apnea and hypopnea\nusing Polysomnography (PSG) measurement channels provided in the 2018 Physionet\nchallen…
View article: SleepNet: Automated Sleep Disorder Detection via Dense Convolutional Neural Network.
SleepNet: Automated Sleep Disorder Detection via Dense Convolutional Neural Network. Open
In this work, a dense recurrent convolutional neural network (DRCNN) was constructed to detect sleep disorders including arousal, apnea and hypopnea using available Polysomnography (PSG) measurement channels provided in the 2018 PhysioNet …
View article: Frontal-Plane Variability in Foot Orientation During Fatiguing Running Exercise in Individuals With Chronic Ankle Instability
Frontal-Plane Variability in Foot Orientation During Fatiguing Running Exercise in Individuals With Chronic Ankle Instability Open
Context: Researchers have reported increased variability in frontal-plane movement at the ankle during jumping in individuals with chronic ankle instability (CAI), which may increase their risk of recurrent ankle sprain. It is not known if…
View article: Validation and comparison of shank and lumbar-worn IMUs for step time estimation
Validation and comparison of shank and lumbar-worn IMUs for step time estimation Open
Gait assessment is frequently used as an outcome measure to determine changes in an individual’s mobility and disease processes. Inertial measurement units (IMUs) are quickly becoming commonplace in gait analysis. The purpose of this study…
View article: The Design of a Computer Simulator to Emulate Pathology Laboratory Workflows
The Design of a Computer Simulator to Emulate Pathology Laboratory Workflows Open
This paper outlines the design of a simulator to allow for the optimisation of clinical workflows within a pathology laboratory and to improve the laboratory’s efficiency in the processing, testing, and analysis of specimens. The aim of th…
View article: Validation of temporal gait metrics from three IMU locations to the gold standard force plate
Validation of temporal gait metrics from three IMU locations to the gold standard force plate Open
The purpose of this work is to compare temporal gait parameters from three different IMU locations to the gold standard force platform. 33 subjects (12 F, 21 M) performed twenty gait trials each while wearing inertial measurement units (IM…
View article: Streaming Audio & Video Experience (SAVE): A Solution to Publish Music-related ETDs
Streaming Audio & Video Experience (SAVE): A Solution to Publish Music-related ETDs Open
The presentation was presented at 2016 Texas Conference on Digital Libraries
View article: Coordination and Symmetry Patterns During the Drop Vertical Jump in People With Chronic Ankle Instability and Lateral Ankle Sprain Copers
Coordination and Symmetry Patterns During the Drop Vertical Jump in People With Chronic Ankle Instability and Lateral Ankle Sprain Copers Open
Background The drop vertical jump (DVJ) task has previously been used to identify movement patterns associated with a number of injury types. However, no current research exists evaluating people with chronic ankle instability (CAI) compar…
View article: Coordination and symmetry patterns during the drop vertical jump, 6‐months after first‐time lateral ankle sprain
Coordination and symmetry patterns during the drop vertical jump, 6‐months after first‐time lateral ankle sprain Open
To evaluate the adaptive movement and motor control patterns of a group with a 6‐month history of first‐time lateral ankle sprain (LAS) injury during a drop vertical jump (DVJ) task. Fifty‐one participants with a 6‐month history of first‐t…
View article: Dual-task and electrophysiological markers of executive cognitive processing in older adult gait and fall-risk
Dual-task and electrophysiological markers of executive cognitive processing in older adult gait and fall-risk Open
The role of cognition is becoming increasingly central to our understanding of the complexity of walking gait. In particular, higher-level executive functions are suggested to play a key role in gait and fall-risk, but the specific underly…
View article: Lower Limb Interjoint Postural Coordination One Year after First-Time Lateral Ankle Sprain
Lower Limb Interjoint Postural Coordination One Year after First-Time Lateral Ankle Sprain Open
Participants with CAI present with a hip-dominant strategy of eyes-open and eyes-closed static unipedal stance. This coincided with reduced complexity of the stance limb center of pressure path in the eyes-closed condition.