A recently published article in the Chinese Journal of Traumatology provided a narrative review of injuries of sonic weapons to the human body. [1] Below are my notes from this article, which has free full access available for your reading. Ultrasound: frequencies higher than 20kHZ. Inaudible to the human ear. Directional and can penetrate the… Continue reading Sonic Weapons and the Human Body
Blog
Output Degradation
For high level tactical professionals, I expect an individual to show up with a high degree of output capacity. What I am interested in is how that output capability withstands sensorimotor challenges. I approach this in 4 phases. Phase 0 is baseline evaluation of speed and precision of the specific movement pattern we are stressing.… Continue reading Output Degradation
Vestibular Capabilities: Stabilization on Jacobs Ladder and SWCC
Epigenetics and Repeated Head Impacts
Epigenetics is a foundational aspect of life – reflecting both how genes are expressed and their interaction with the environment. Epigenetic studies offer insight into cell function at the most fundamental level. One study by Breen et al., 2025, investigated the relationship between duration of repeated head impacts and abnormal epigenetics in the frontal cortex… Continue reading Epigenetics and Repeated Head Impacts
Power, Stabilization, Plane, Volume
I look at four main components of a capability when evaluating the vestibular demands for training gaze stabilization. Peripheral and central vestibular processing are vulnerable to repeated low level blasts. And while the importance of training vestibular performance is self-evident, the urgency of incorporating proactive vestibular training is magnified by the significant subconcussive exposures in… Continue reading Power, Stabilization, Plane, Volume
Training Intent
My approach to vestibular training has evolved to include “developmental pathways”. I wanted to create a way to systematically approach vestibular training, with a clear route to progressive overload, as well as built-in deload strategies. To achieve a holistic approach, I included pathways specific for the three vestibular angular planes I also built out a… Continue reading Training Intent
The Integral Relationship of Cognitive, Emotional, and Sensorimotor Processing
The brain has many processing responsibilities, including emotional, sensorimotor, and cognitive functions. While we often see each domain as separate, they are highly integrative, with most scenarios that tactical professionals face having components of all three. I look at it in a simplified manner with this equation Input -> Processing -> Output Δ sensory input… Continue reading The Integral Relationship of Cognitive, Emotional, and Sensorimotor Processing
Practice and Plasticity
The brain is inherently flexible; it is highly adaptable to functional demands. ‘Plasticity’ is a term used to describe this capability. The brain learns from what we repeatedly do, with changes to both the pattern and effectiveness of neural connections reflecting that. Think of it like building roadways in your brain. A specific skill, such… Continue reading Practice and Plasticity
Improving Brain Functional Connectivity After Repeated Head Impacts
Measuring functional connectivity of the brain is a method used to identify changes to how the brain communicates. This is often used to quantify injury to the brain, but also effectiveness of treatments. For example, US Iraq and Afghanistan Veterans with close-range blast exposures had changes to the resting state functional connectivity even with no… Continue reading Improving Brain Functional Connectivity After Repeated Head Impacts
Subconcussive Impacts and Visuo-Vestibular Performance at US Army Basic Airborne Training
Soldiers attending the US Army Basic Airborne Training were equipped with sensors that detect head motion from impact or inertia, offering metrics on number of impacts, peak linear acceleration, peak rotational acceleration, and peak rotational velocity. These soldiers also underwent a visual-vestibular balance/sensory integration assessment that included assessment of the ability to process and integrate… Continue reading Subconcussive Impacts and Visuo-Vestibular Performance at US Army Basic Airborne Training