JoVE Monthly Highlights: September 2017

Summary

Here's a look at what's coming up in the September 2017 issue of JoVE: The World's Premier Video Journal.

Protocol

Optical Coherence Tomography: Imaging Mouse Retinal Ganglion Cells In Vivo

Jolanta Jagodzinska*¹, Emmanuelle Sarzi*¹, Mélanie Cavalier¹, Marie Seveno¹, Volker Baecker², Christian Hamel^1,3,4, Marie Péquignot¹, Cecile Delettre¹

¹INSERM U1051, Institut of Neurosciences of Montpellier, ²CNRS UMS3426, BioCampus Montepellier, ³University of Montpellier, ⁴CHRU Montpellier, Centre of Reference for Genetic Sensory Diseases, CHU Gui de Chauliac Hospital

This manuscript describes a protocol for the in vivo imaging of the mouse retina with high-resolution spectral domain optical coherence tomography (SD-OCT). It focuses on retinal ganglion cells (RGC) in the peripapillary region, with several scanning and quantifying approaches described.

A Test Bed to Examine Helmet Fit and Retention and Biomechanical Measures of Head and Neck Injury in Simulated Impact

Henry Y. Yu, Brooklynn M. Knowles, Christopher R. Dennison

Department of Mechanical Engineering, University of Alberta

Using an anthropometric head and neck, optical fiber-based fit force transducers, an array of head acceleration and neck force/moment transducers, and a dual high speed camera system, we present a test bed to study helmet retention and effects on biomechanical measures of head and neck injury secondary to head impact.

Measuring and Mapping Patterns of Soil Erosion and Deposition Related to Soil Carbonate Concentrations Under Agricultural Management

Robert H. Erskine, Lucretia A. Sherrod, Timothy R. Green

Water Management and System Research Unit, Center for Agricultural Resources Research, USDA Agricultural Research Service (ARS)

Spatial patterns of soil erosion and deposition can be inferred from differences in ground elevation mapped at appropriate time increments. Such changes in elevation are related to changes in near-surface soil carbonates. Repeatable methods for field and laboratory measurements of these quantities and data analysis methods are described here.

Using Gold-standard Gait Analysis Methods to Assess Experience Effects on Lower-limb Mechanics During Moderate High-heeled Jogging and Running

Yan Zhang^1,2,3, Meizi Wang¹, Jan Awrejcewicz³, Gusztáv Fekete⁴, Feng Ren¹, Yaodong Gu^1,2

¹Faculty of Sports Science, Ningbo University, ²Research Academy of Grand Health Interdisciplinary, Ningbo University, ³Department of Automation, Biomechanics and Mechatronics, The Lodz University of Technology, ⁴Savaria Institute of Technology, Eötvös Loránd University

This study investigated lower-limb kinematics and ground reaction force (GRF) during moderate high-heeled jogging and running. Subjects were divided into groups of experienced wearers and inexperienced wearers. A three-dimensional motion analysis system with a configured force platform captured lower-limb joint movements and GRF.