BIOPAC® Systems, Inc. Logo

EEG frequency bands

AcqKnowledge includes digital filters that allow you to filter a raw EEG into the following frequency bands:

Delta 0.5-4Hz

Theta 4-8Hz

Alpha 8-13Hz

Beta 13-30Hz

Gamma 36-90Hz (in some older versions the upper frequency is 44 Hz)

The filters may be selected and then modified for different frequency bands if desired.

Online procedure

When you start to record data you will see additional channels that contain band pass filtered versions of the raw EEG data.

Offline procedure

AcqKnowledge version 3.9.1 and above for Macintosh and version 4.0 and above for Windows fully automate the offline procedure for creating these additional channels.  Choose “Analysis > Electroencephalography > Derive EEG Frequency Bands” and follow the on-screen prompts.

Page last modified 24Dec2014

Associated Applications

Spotlight On
Smart Center controller, 2-3 wireless transmitters & AcqKnowledge plus case

Smart Center | Stand-alone BioNomadix Wireless Systems

Smart Center Stand-alone, Portable Wireless Physiology Systems Smart Center Essentials entry-level system includes a Smart Center Device (BN-SMART with USB power cable), 2 or 3 Transmitters (BN-xxx-T with chargers); AcqKnowledge for Smart Center, and a case. Smart Center Enhanced adds a Logger (BN-LOGGER) and Basic Scripting License (ACK100W-BAS) to the Smart Center Device (BN-SMART with powercable), 3 […]

View All
Latest News

BIOPAC Releases New BioNomadix Smart Center System

Good quality data is important for reliable physiological research. No longer restrained to wires or stationary devices, BIOPAC’s newly released Smart Center is a lightweight and compact system designed to acquire quality data. The portable, wireless device offers high fidelity physiological data, allowing for subjects to be untethered while being recorded. The system includes the […]

MEAP and BIOPAC used to quantify rapid changes in cardiovascular state

The new issue of Psychophysiology has a study “Quantifying rapid changes in cardiovascular state with a moving ensemble average” using MEAP for preprocessing/analysis and BIOPAC hardware and software for data collection, display, and storage. The proof of concept study demonstrates a viable method for the adoption of ICG measures across the field of psychophysiology. MEAP (moving ensemble […]

Read All
Request a Demonstration
Request a Demonstration