BIOPAC® Systems, Inc. Logo

211 – EEG Analysis With AcqKnowledge

The AcqKnowledge software will record EEG data, filter the data into the specific bandwidths for Alpha, Theta, Beta and Delta, and display the results on-line. Often, researchers also need to quantify the activity in each band.

This Application Note provides a useful technique for analyzing EEG signals and quantifying the activity in each band. This note will explain how to:

  1. Integrate the alpha wave EEG data to get a better view of alpha wave activity.
  2. Identify where the integrated data crosses certain threshold values.
  3. Measure the amount of time that was spent in a heightened alpha state and count the number of times that the subject entered the state.

This note describes the procedure for working off-line with a saved data file, but you can also perform these functions online (as noted at each step).

 
The examples in this note use a raw EEG signal taken from a human subject and filtered to show the Alpha wave activity.

 

Associated Applications

Spotlight On
Programmable Stimulation System for E-Prime

Programmable Stimulation System for E-Prime

The STMEPM Programmable Stimulation System for E-Prime allows a user to interface the STMISOLA Stimulator with E-Prime to control the stimulus frequency and stimulus intensity for real-time stimulus delivery changes based on a subject’s responses. It is also possible to hardcode the stimulus intensity levels in the presentation so that predefined stimulus levels are delivered […]

View All
Latest News

BIOPAC T4 Physiology Conference Recap

Academics and professionals in the field of human physiology gathered at UCSB for the inaugural T4 Physiology Conference. BIOPAC coordinated the three day conference held in late July, which attracted attendees from 26 different countries. The attendees gathered to learn the latest tools, trends, techniques and technology used in life science measurement and interpretation. The […]

BIOPAC blood flow measurement devices recognized

Industry reporting firm medGadget recognized BIOPAC as a major market competitor in the global Blood Flow Measurement Devices market. BIOPAC hardware solutions for blood flow measurement include laser Doppler flowmetry and extensive online and offline analysis of raw blood flow data to take an array of calculations and measurements, such as Pulsatile max, Pulsatile Min, […]

Read All
Request a Demonstration
Request a Demonstration