What is Elektromyography (EMG)?

Electromyography (EMG) is a scientifically validated method for measuring the electrical activity of muscles. It records so-called myoelectric signals generated by neural activation of muscle fibers. These signals reflect the intensity and quality of muscle activation. Unlike structural imaging methods, EMG does not display muscle anatomy but rather its function in real time, both at rest and during movement. Modern EMG systems such as myoact capture this data non-invasively using surface sensors and make it both visually and quantitatively interpretable.

How does EMG differ from other methods like ultrasound or MRI?

Unlike structural imaging methods such as MRI or ultrasound, EMG does not visualise structures but assesses muscle function. It shows in real time when and how intensely a muscle is activated. While MRI provides static images and ultrasound displays tissue structures, EMG captures myoelectric activity during movement and muscle contraction. This makes EMG particularly suited for functional analysis, biofeedback training, and detecting neuromuscular deficits.

What features must a modern EMG device offer for clinical or therapeutic use?

A professional EMG system must measure muscle activity accurately, reproducibly, and under real-world conditions. Key features include high sampling rates (e.g., 1000 Hz), wireless sensors for freedom of movement, real-time visualization, and powerful analysis tools such as RMS calculation (to smooth and quantify the EMG signal), amplitude comparisons (to assess peak muscle tension), temporal analyses (activity changes over time), and side-to-side comparisons. Intuitive software, standardized testing protocols, and automated reporting streamline clinical use. Modern systems like myoact integrate all these features into a compact, user-friendly setup.

What makes our EMG technology unique?

The myoact system combines high-resolution wireless Bluetooth sensors with intelligent AI-based evaluation software. It measures muscle activity in real time, calculates relevant parameters (resting tone, Maximum Voluntary Activation (MVA), Selective Voluntary Activation (SVA), Maximum Movement Activation (MMA)), and presents them in a user-friendly format. The mapping module enables standardised muscle testing for documentation and comparability. A standout feature is the integrated biofeedback training that actively involves patients in therapy, allowing not just the detection but also the targeted training of control deficits.

What common errors in muscle analysis can be avoided with EMG?

Without objective measurement, assessing muscle tension, imbalances, or neuromuscular control remains subjective. EMG reduces this uncertainty through standardised, quantitative data. Typical errors such as overlooking hypertonicity, misinterpreting movement execution, or unclear side differences can be objectively identified using EMG. Compensatory muscle activation also becomes visible and treatable. This enhances diagnostic precision and enables more targeted therapy.