Supported Data Formats

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Module information
Modules BESA Research Basic or higher
Version 6.1 or higher

BESA Research supports most major EEG and MEG file formats. Most file format readers are written by ourselves, others are supplied by the manufacturers. This document gives an overview of all the data formats that can be imported in BESA Research 6.1. If your file format cannot be found in this list, please contact us via our support form: BESA support form

The latest installers for the various file formats can be downloaded from the following site: BESA file format readers

Supported EEG data formats

File Format/Manufacturer/Software File Extension File Formats Version Download Notes
Alpha-Trace (alpha-trace medical software) .alp tested up to v418-05
ASCII .avr .mul ASCII File Format
ATES *
BDF (BioSemi) .bdf Link
Beekeeper64 (Telefactor) .eeg .dat
Bio-logic (CEEGraph) * .eeg
BrainAmp / BrainVision (Brain Products) .eeg .vhdr
BrainLab (Schwarzer) .sig
BrainStar (Schwind Medizintechnik) .eeg
Cadwell *, *** Link Reading EBNeuro Files
Compumedics (ProFusion) *, ** .sdy ProFusion EEG 4, 5 Link
DCmes, PolyDC (MES) .dat
Deltamed (Coherence) * .eeg
Deltamed (Neurofile) .eeg
Deymed (Truescan) Link
EBNeuro (Galileo) *, ** .gnt .set Galileo.NT, Galileo.NET 3.5 Link
EDF (European Data Format) .edf EDF, EDF+ Link Reading EDF Files
EEProbe (ANT) .cnt
Electrical Geodesics, Inc. - Raw data format .raw .ses Reading EGI Raw Files
Electrical Geodesics, Inc. - Metafile Format (EGI MFF) * .xml up to MFF v3 Link
ERPSS *
g.Tec (Guger Technologies) .hdf5 Link
Galileo (EBNeuro) * .nt
Generic Reader (any ASCII formats; see BESA Program Help) .avr .mul
Grass-Telefactor (TwinRef) * .ref up to Twin v3.1 Link
InstEP *, **** .c .is .ia up to version 7.3 of the IWave Input/Output library Link
Konstanz file format * .raw .sum
ManScan interchange format (SAM) * .mbi
Medtronic * .wg1
MEF (Multiscale Electrophysiology File) * .xml MEF 2.0 Link Reading MEF Files
Micromed * .trc Micromed System98 EEG file (version 3 & 4) Link
NeurOne
Neuronic *
NeuroScan .cnt .avg
NexStim .nxe Link
Nicolet (Nicolet Biomedical Inc.) * .eeg
NicoletOne / Nervus (Nicolet Biomedical Inc.) * .e .eeg Link
Nihon Kohden .eeg EEG-1100, EEG-1200, EEG-2100 Link
Phoenix II (EMS) * s*.0 s*.1 …
Stellate Systems (Harmonie) *, ** .sig Harmonie 5.2c, 5.4, 6.1, 6.2, 7a Link
Stellate Systems (Monitor) *, ** .eeg Link
Vangard (LaMont Medical Inc.) * B****, no extension
XLTEK * .eeg .erd up to v8.1 Link

If files are in one of these formats, they can be read directly and conversion is not required. BESA Research also has a new, flexible interface for importing ASCII files which can be used in conjunction with the ASCII export functions of your software. Any EEG format can be converted to the compressed BESA binary format, ASCII format, EDF+ or simple binary format.

* Install this reader using "Install Additional Readers.htm" in the "Utilities\Additional Readers\" subfolder.
** The EEG data format requires installation of the corresponding EEG system reader software or SDK.
*** The Cadwell reader requires the installation of the Cadwell Arc API. If this API is not already installed on your computer, download it from the following link and install it on your computer: Link. The API must be installed in the suggested default path on your C: drive.
**** Please note that a valid license for the IWave library is required in order to be able to read InstEP files.

Supported MEG data formats

File Format/Manufacturer/Software File Extension File Formats Version Download Notes
ASCII .avr .mul ASCII File Format
BESA 2000 / FOCUS High Compression Format .foc .fsg
BTI (special export program exp2BESAbin in Unix system)
CTF .meg4
Elekta Neuromag Functional Image File Format (FIFF) .fif FIFF v2.0 Link
Yokogawa * .con Link

* Install this reader using "Install Additional Readers.htm" in the "Utilities\Additional Readers\" subfolder.