BIOPAC® Systems, Inc. Logo

EMG Power Spectrum Analysis

A common tool for investigating electromyography (EMG) data is the Power Spectrum Density (PSD). Use AcqKnowledge for EMG Frequency & Power Analysis to compare responses from one part of the recording to the next and for data reduction of large EMG signals. This frequency domain technique splits the EMG signal into a fixed number of time periods and runs the Power Spectral Density transformation on each epoch.

The following measurements are exported to a spreadsheet:

Data can be recorded with resuable or disposable surface EMG electrodes or needle electrodes using wired, wireless, or MRI Smart amplifiers.

See More...

Details

This is one of many ADVANCED FEATURES for the selected Application. Scroll down for hardware options.

This frequency domain technique splits the EMG signal into a fixed number of time periods and runs the Power Spectral Density transformation on each epoch. The following measures are derived from the power spectrum of the EMG signal and extracted for reporting:

  • Median Frequency (Hz) – Frequency at which 50% of the total power within the epoch is reached.
  • Mean Frequency (Hz) – Frequency at which the average power within the epoch is reached.
  • Peak Frequency (Hz) – Frequency at which the maximum power occurs during the epoch.
  • Mean Power (V2/Hz*) – Average power of the power spectrum within the epoch.
  • Total Power (V2/Hz*)- Sum of the power at all frequencies of the power spectrum within the epoch.

*Units Note: V will be replaced with the voltage units in which the EMG was recorded.

Videos

BIOPAC Research Solutions | EMG

EMG - Frequency and Power Analysis

EMG - Locate Muscle Activation

Support

Application Notes

Knowledge Base

Hardware Packages   |   EMG Power Spectrum Analysis

Hardware Bundles are complete solutions for the specified application. Choose your preferred platform and bundle, then click "Request Pricing" to request an estimate, add/remove items, or complete purchase. If you have questions about specific items, click through to the product web page for details and specifications, or contact your Local Sales contact.

Wired

Wireless

MRI

Animal

Spotlight On
BioNomadix Wireless 2 Ch Goniometry Amplifier

BioNomadix 2CH Wireless Goniometry Amplifier

The BioNomadix two channel wireless goniometry amplifier is a dual output device that provide simultaneous measurements around two orthogonal rotational axes (e.g., wrist flexion/extension and radial/ulnar deviations). These units interface with the MP160 (or older MP150) data acquisition and analysis platform and AcqKnowledge software, allowing advanced analysis for multiple applications and supporting acquisition of a broad range of signals and measurements. BN-GONIO can support any […]

View All
Latest News

New Citations | BIOPAC in Ergonomics

Whether using specialized equipment, performing repetitive tasks, or simply going about our daily work routine, the effects of design in our environment as well as the tools we use and the way we use them can impact our health, work performance, and quality of life. Here are a few studies that have recorded and analyzed […]

EDA Guide Available

BIOPAC’s comprehensive EDA Guide provides an introduction to Electrodermal Activity (EDA or GSR) and details topics including: EDA Complex: SCL, SCR, tonic, phasic, specific SCR, non-specific SCR Participant Prep & Electrode Placement Data Recording tips Automated EDA Analysis Routines Digital input to Stim Events Stim-Response Analysis Derive Phasic EDA from Tonic Event-related EDA Analysis Locate […]

Read All
Request a Demonstration
Request a Demonstration