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
BIOPAC Facial EMG

FEMG Smart Amplifier

The fEMG Electromyography Smart Amplifier is designed specifically for recording facial EMG signals and electrical activity from other small muscle groups. Use with AcqKnowledge™ software to analyze facial expressions and startle paradigms. BIOPAC’s new Smart Amplifiers are designed for great data. Smart Amplifiers improve performance by amplifying the physiological signal close to the subject, which allows a high-level […]

View All
Latest News

New Citations | Combat Helicopters: Luxury Cars of the Sky

Recent psychophysiological studies feature BIOPAC’s MP Research series of Data Recorders and AcqKnowledge software. Creating Adaptive Assistants for helicopter crews based on Real-time Physiological Data In the Mercedes S-Class, biometric tools track a driver’s eyes, heart rate, and other physiological data, with one goal in mind: Making sure drivers are alert and safe on the […]

Electrocardiography Guide Now Available

BIOPAC’s just released Introductory ECG Guide addresses fundamental to advanced concerns to optimize electrocardiography data recording and analysis. Topics include: ECG Complex; Electrical and Mechanical Sequence of a Heartbeat; Systole and Diastole; Configurations for Lead I, Lead II, Lead III, 6-lead ECG, 12-lead ECG, precordial leads; Ventricular Late Potentials (VLPs); ECG Measurement Tools; Automated Analysis Routines […]

Read All
Request a Demonstration
Request a Demonstration