Different types of EEG hardwares

06/09/2022 at 06:09:58

Different types of EEG hardwares

Brain Products has several different amplifiers for different electroencephalogram (EEG) solutions. In this blog we are reviewing the technical details for each amplifier.

Electroencephalography is the neurophysiological measurement of electrical activity in the brain as recorded by electrodes placed on the scalp or, in special cases, subdurally or in the cerebral cortex. The resulting traces are known as an electroencephalogram (EEG) and represent a summation of post-synaptic potentials from a large number of neurons.

The system used for electroencephalography consists in electrodes (with wires), an amplificator, an energy source (battery for example) and were store the data (computer or SD card). Many systems typically use electrodes which are each attached to an individual wire. Some systems use caps in which electrodes are embedded. This latter method is particularly common when high-density arrays of electrodes are required.

Brain Products EEG amplifiers are equipped with a number of noise reduction techniques such as active noise cancellation and active electrodes. High common mode rejection as well as low amplifier noise ensure maximum data quality. Our huge product range includes a range of electrodes and caps with custom or standard montages as well as a variety of requisite accessories.

A brief introduction to EEG and the types of electrodes

Different EEG Hardware to record data.

How to select your electrode type?

BrainVision actiCHamp

EEG Amplifier for Research actiCHamp PLUS

Quantity of electrodes channels: 32, 64, 96, 128 and 160 EEG channels.

Auxiliary inputs: 8 integrated AUX inputs (e.g. GSR, EOG, EMG, ECG, respiration, acceleration, temperature, blood pulse, photo sensor, microphone, etc.).

Sampling rate: up to 100 KHz.

Versions:

BrainVision actiCHamp Plus

EEG Passive Active and Spong Electrodes CAPs

An ActiCHamp compatible with all active and passive electrodes from Brain Products (including R-net).

BrainVision BrainAmp Serie

EEG Amplifier for Research BrainAmp Wireless

Data format: 16 bit

Battery supply: battery-supplied (PowerPack 30 h recording)

Electrode types: actiCAP slim / actiCAP snap, actiCAP Xpress Twist, BrainCap, BrainCap TMS and EASYCAP - EasyCap.

Quantity of electrodes channels: 32 channels (units can be stacked to expand the number of channels up to 256 and combined with the BrainAmp ExG to record EOG, ECG, EMG and other peripheral signals such as Galvanic Skin Response, respiration, acceleration, temperature, etc.)

Auxiliary inputs: can be connected with ExG Input Box (with 16 bipolar ExG channels)

Sampling rate: 5 kHz

Versions:

BrainVision BrainAmp MR

This BrainAmp Allows combined EEG & fMRI acquisition by placing the amplifiers directly inside the MR scanner bore ensures maximum data quality and respects safety aspects.

BrainVision BrainAmp MR plus

The BrainAmp MR Plus can be placed inside of the MRI chamber to achieve simultaneous EEG/fMRI acquisitions as well as used in the EEG lab for EEG/TMS co-registrations, EEG/ERP studies and Brain Computer Interface applications. There is no need for different amplifier types it offers a solution for many applications.

BrainVision BrainAmp DC

A direct current BrainAmp amplifier for low frequencies.

BrainVision BrainAmp ExG

The BrainAmp ExG amplifier is a bipolar amplifier which can be used to record EMG, ECG, EOG and polygraphic channels such as GSR (Galvanic Skin Response), acceleration.

BrainVision BrainAmp ExG MR

The BrainAmp ExG amplifier is a bipolar amplifier which can be used to record EMG, ECG, EOG and polygraphic channels such as GSR (Galvanic Skin Response), acceleration. Compatible with MR scanner.

EEG Amplifier for Research BrainAmp EXG Sensor for MRI