Supported Data Formats

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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 File extension
Alpha-Trace (alpha-trace medical software) .alp
ATES *
BDF (BioSemi) .bdf
Beekeeper64 (Telefactor) .eeg .dat
Bio-logic (CEEGraph) * .eeg
BrainAmp / Brain Vision (Brain Products) .eeg .vhdr
BrainLab (Schwarzer) .sig
BrainStar (Schwind Medizintechnik) .eeg
Compumedics (ProFusion EEG 4, installation required) * .sdy
DCmes, PolyDC (MES) .dat
Deltamed (Coherence) * .eeg
Deltamed (Neurofile) .eeg
EBNeuro (Galileo.NT and Galileo.NET 3.5)* .gnt .set
EDF (European Data Format) and EDF+ .edf
EEProbe (ANT) .cnt
Electrical Geodesics, Inc. (EGI) .raw .ses
EGI MFF* .xml
ERPSS
g.Tec (Guger Technologies) .hdf5
Galileo (EBNeuro, installation required) * .nt
Generic Reader (any ASCII formats; see BESA Program Help)
Grass-Telefactor (TWinREF) * .ref
InstEP * .c .is .ia
Konstanz file format * .raw .sum
MANSCAN interchange format (SAM) * .mbi
Medtronic * .wg1
MEF (Multiscale Electrophysiology File 2.0) .xml
Micromed * .trc
NeurOne
Neuronic *
NeuroScan .cnt .avg
NexStim .nxe
Nicolet (Nicolet Biomedical Inc.) * .eeg
NicoletOne / Nervus (Nicolet Biomedical Inc., installation required) * .e .eeg
Nihon Kohden EEG 1100 / 1200 / 2100 .eeg
Phoenix II (EMS) * s*.0 s*.1 …
Stellate Systems (Harmonie, installation required) * .sig
Stellate Systems (Monitor) .eeg
Vangard (LaMont Medical Inc.) * B****, no extension
XLTEK * .eeg .erd

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.

Supported MEG data formats

File Format/Manufacturer File extension
ASCII
BESA 2000 / FOCUS high compression format .foc .fsg
BTI (special export program exp2BESAbin in Unix system)
CTF .meg4
Neuromag .fif
Yokogawa * .con

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