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5 Papers

Leveraging Deep Learning for Approaching Automated Pre-Clinical Rodent Models

Topics: Deep Learning; Applications: Image Processing and Artificial Vision, Pattern Recognition, Decision Making, Industrial and Real World Applications, Financial Applications, Neural Prostheses and Medical Applications, Neural Based Data Mining and Complex Information Process

Authors: Carl Sandelius 1 ; 2 , Athanasios Pappas 2 , Arezoo Sarkheyli-Hägele 1 , Andreas Heuer 2 and Magnus Johnsson 3

Affiliations: 1 Internet of Things and People Research Center, Department of Computer Science and Media Technology, Malmö University, Malmö, Sweden , 2 Behavioural Neuroscience Laboratory, Department of Experimental Medical Sciences, Lund University, Lund, Sweden , 3 Research Environment of Computer Science (RECS), Kristianstad University, Sweden

Digital Object Identifier: 10.5220/0013065600003837

Proceedings of NCTA 2024, ISBN: 978-989-758-721-4

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We evaluate deep learning architectures for rat pose estimation using a six-camera system, focusing on ResNet and EfficientNet across various depths and augmentation techniques. Among the configurations tested, ResNet 152 with default augmentation provided the best performance when employing a multi-perspective network approach in the controlled experimental setup. It reached a Root Mean Squared Error (RMSE) of 8.74, 8.78, and 9.72 pixels for the different angles. The utilization of data augmentation revealed that less altering yields better performance. We propose potential areas for future research, including further refinement of model configurations, more in-depth investigation of inference speeds, and the possibility of transferring network weights to study other species, such as mice. The findings underscore the potential for deep learning solutions to advance preclinical research in behavioral neuroscience. We suggest building on this research to introduce behavioral recognition based on a 3D movement reconstruction, particularly emphasizing the motoric aspects of neurodegenerative diseases. This will allow for the correlation of observable behaviors with neuronal activity, contributing to a better understanding of the brain and aiding in developing new therapeutic strategies.

Hand Reach Star Excursion Balance Test as a Measure of Joint Mobility

Topics: Applied Physiology and Exercise; Health and Fitness

Authors: Ola Eriksrud 1 , Jan Cabri 1 and Peter Federolf 2

Affiliations: 1 Norwegian School of Sport Sciences, Norway , 2 University of Innsbruck, Austria

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Joint range of motion (ROM) is commonly measured using goniometry, which is well established with accepted reference values from the American Academy of Orthopedic Surgeons (AAOS) (Greene & Heckman, 1994). The procedures of obtaining these measures are based on unidirectional and uniplanar passive testing of isolated joint motions in supine, prone or seated positions. The relationships of such ROM measures have been found to have a variable relationship to performance (Craib et al., 1996; Menz, Morris, & Lord, 2006). Utilizing tests of the full kinematic chain from an upright standing position that involve the concurrent use of multiple joints, directions and planes of motion might be one solution to the shortcomings of the traditional ROM testing procedures. Full kinematic chain tests have the advantage of greater specificity to most human movements including, for example, athletic performance. The Star Excursion Balance Test (SEBT) is a widely accepted (Gribble, Hertel, & Plisky, 2012) test of balance and mobility in lower-body joints. While it does not challenge all joint movements at and above the hip (Delahunt et al., 2013), its does offer a platform from which a whole-body mobility test can be created. In the current study we propose a Hand Reach Star Excursion Balance Test (HSEBT), which combines a systematic use of unilateral and bilateral hand reaches, thus also challenging mobility in hip and upper body joints. The purposes of this study were to (1) evaluate in which joints significant motions are elicited by the HSEBT in healthy reference group; and (2) compared to joint movements of the foot, knee, hip and trunk triggered by the HSEBT to normative ROM values.
Collapse Button Related Ontology Subjects/Areas/Topics (4)
Applied Physiology and Exercise

Health, Sports Performance and Support Technology

Sport Science Research and Technology
Health and Fitness

Challenges and Opportunities in Developing a Test Battery for Joint Mobility using Reach Tasks Starting from Upright Standing Positions

Topic: Training and Testing

Authors: O. Eriksrud , P. Anderson , E. H. Andreassen , S. Litsos , F. O. Sæland , P. Federolf and J. Cabri

Affiliation: Norwegian School of Sport Sciences, Norway

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This study investigated if a systematic combination of upright standing reach tests may be used as a test battery for the assessment of joint mobility and identified potential challenges. In addition, it was assessed if selected conventional tests of mobility are correlated with performance in the reach tests. Eight male volunteers executed a series of 20 reach tasks. Their movements were recorded with a 14-camera motion tracking system using a whole-body marker set. Joint ranges of motion were also determined in 4 conventional mobility tests. In all reach tests significant correlations were found between the reach distance and a specific set of joint angles as well as with anthropometric measures. Joint range of motion, as determined in the conventional tests, correlated with reach performance only in 7 of 22 analyzed comparisons. These results suggest that reach tests may offer an approach to test joint mobility in situations closer to “real-life”, however, scaling of anthropometric properties, stability, and balance issues have to be considered.
Collapse Button Related Ontology Subjects/Areas/Topics (3)
Health, Sports Performance and Support Technology

Sport Science Research and Technology

Training and Testing

BRAKE RESPONSE TIME BEFORE AND AFTER TOTAL KNEE ARTHROPLASTY - Tracking Possible Effects of the Surgery Technique on Motor Performance: Report of Two Cases

Topic: Motion Control

Authors: Carlos J. Marques 1 , Rui Santos 2 , Hugo Gamboa 2 , Frank Lampe 3 , João Barreiros 4 and Jan Cabri 5

Affiliations: 1 Technical Universitty of Lisbon and ENDO-Klinik Hamburg, Portugal , 2 New University of Lisbon, Portugal , 3 Schön Klinik Hamburg Eilbek, Germany , 4 Technical Universitty of Lisbon, Portugal , 5 Norwegian School of Sport Sciences, Norway

Digital Object Identifier: 10.5220/0003790904190422

Proceedings of BIOSIGNALS 2012/BIOSTEC, ISBN: 978-989-8425-89-8

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After total knee arthroplasty (TKA) patients often ask when they can resume car driving. This question was the aim of some studies in the past, however no study was found on the possible effects of different surgery techniques on brake response time (BRT). A randomized controlled trial on the effects of two surgery techniques (minimally invasive vs. standard approach) on BRT was designed. In this paper the motor performance of two female patients was compared. Surgery had different effects on the mean BRT of both Patients. The mean BRT of the MIS Patient wasn’t increased 7 days after surgery, while the BRT of the Patient undergoing standard surgery was increased by 46.8% at the same time.
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Animation and Simulation

Biomedical Signal Processing

Motion Control
Biomedical Engineering

Computer Vision, Visualization and Computer Graphics

MUSCLE ACTIVATION THRESHOLDS BEFORE AND AFTER TOTAL KNEE ARTHROPLASTY - Protocol of a Randomized Comparison of Minimally Invasive vs. Standard Approach

Topics: Physiological Processes and Bio-Signal Modeling, Non-Linear Dynamics; Motion Control

Authors: Carlos J. Marques 1 , Hugo Gamboa 2 , Frank Lampe 3 , João Barreiros 4 and Jan Cabri 5

Affiliations: 1 Faculty of Human Kinetics, Technical Universitty of Lisbon and ENDO-Klinik Hamburg, Portugal , 2 Sciences and Technology Faculty and New University of Lisbon, Portugal , 3 Schön Klinik Hamburg-Eilbek, Germany , 4 Faculty of Human Kinetics and Technical Universitty of Lisbon, Portugal , 5 Norwegian School of Sport Sciences, Norway

Digital Object Identifier: 10.5220/0003318505440547

Proceedings of BIOSIGNALS 2011/BIOSTEC, ISBN: 978-989-8425-35-5

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After total knee arthroplasty (TKA) patients often ask when they can resume car driving. This question was the aim of some studies in the past, however it is not clear whether minimally invasive surgery (MIS) for total knee replacement has benefits in terms of faster recovering times. With the present study protocol the effects of two surgery techniques for TKA (MIS vs. standard approach) on motor performance parameters will be tested during the performance of an emergency brake in a car simulator. The brake response time components and the muscle activation thresholds of four muscles involved in the task will be the outcomes of the study.
Collapse Button Related Ontology Subjects/Areas/Topics (6)
Animation and Simulation

Biomedical Signal Processing

Motion Control

Biomedical Engineering

Computer Vision, Visualization and Computer Graphics

Physiological Processes and Bio-Signal Modeling, Non-Linear Dynamics

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