Difference between revisions of "BESA files extensions"
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| Main || .ela, .elp, .eps || additional electrode configuration files || When electrodes configuration was loaded (File menu, Load Channel Configuration). *.elp file can be manually saved in ''"File → Head Surface Points and Sensors → Save Electrode File for Current Montatage"'' | | Main || .ela, .elp, .eps || additional electrode configuration files || When electrodes configuration was loaded (File menu, Load Channel Configuration). *.elp file can be manually saved in ''"File → Head Surface Points and Sensors → Save Electrode File for Current Montatage"'' | ||
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| − | | Main || .evt || Events || external text file. Can be loaded by selecting ''"ERP → open event file…"'' (and saved by ''"ERP → save event file…"''). After loading information is copied to .ftg and .fst file is updated | + | | Main || .evt || Events || external text file. Can be loaded by selecting ''"ERP → open event file…"'' (and saved by ''"ERP → save event file…"''). After loading information is copied to .ftg and .fst file is updated. More infro: #REDIRECT [[Event File Format]] |
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| Main || .fst || File general setup || File opened for first time, updated whenever various settings changed (i.e. filtration parameters, surface point file localization) | | Main || .fst || File general setup || File opened for first time, updated whenever various settings changed (i.e. filtration parameters, surface point file localization) | ||
Revision as of 16:32, 21 April 2017
| Module information | |
| Modules | BESA Research Basic or higher |
| Version | 5.2 or higher |
One of the most important rules in BESA software is that the original data will never be changed during data processing (unless user explicitly want to do it by himself). All the changes (i.e. signal processing like filtering) performed in BESA are kept in PC memory and not saved to the file. Such approach has a drawback, that all the settings have to be regenerated whenever the data file is reopened. Therefore to keep all the settings and reload them whenever file is opened BESA saves the additional files beside original one (with the same name, but with different file extension). Note that Such approach has one additional advantage: whenever user want to start his analysis from a scratch he or she just need to delete file responsible for particular setting (or all files to get completely initial state). Therefore good understating of BESA file nomenclature might be useful for advanced BESA users.
Besa Research file extensions
| Application | File extension | File function | When generated/changed |
|---|---|---|---|
| Main | .atf | artifact coefficients | After setting up artifact correction (right mouse click, "Define artifact topography" menu) |
| Main | .bad | bad channels | Whenever any of the electrode is marked as bad or is interpolated |
| Main | .cot | Head center coordinate | external file loaded to BESA. Information about file localization saved in .fst file |
| Main | .ela, .elp, .eps | additional electrode configuration files | When electrodes configuration was loaded (File menu, Load Channel Configuration). *.elp file can be manually saved in "File → Head Surface Points and Sensors → Save Electrode File for Current Montatage" |
| Main | .evt | Events | external text file. Can be loaded by selecting "ERP → open event file…" (and saved by "ERP → save event file…"). After loading information is copied to .ftg and .fst file is updated. More infro: #REDIRECT Event File Format |
| Main | .fst | File general setup | File opened for first time, updated whenever various settings changed (i.e. filtration parameters, surface point file localization) |
| Main | .ftg | Triggers | On file close |
| Main | .ica | ICA topography | Can be saved after ICA analysis by clicking with right mouse button on selected component and selecting "Save Topography" |
| Main | .mtg | Montages | If montage was changed, just .fst file updated. Mtg files are kept in "C:\Users\Public\Documents\BESA\Research_6_1\Montages" |
| Main | .pdg | paradigm | after loading or creating the paradigm |
| Main | .pmg | MEG sensor coordinates | external file loaded to BESA. Information about file localization saved in .fst file |
| Main | .pos | MEG sensor coordinates | external file loaded to BESA. Information about file localization saved in .fst file |
| Main | .sfh | coregistration info | created when coregistration with MRI is started ("File → MRI Coregistration.."). Can be loaded externally, then information about file localization is saved in .fst file |
| Main | .sfn | labels assigned to electrode configuration .eps | external file loaded to BESA. Information about file localization saved in .fst file |
| Main | .sfp | digitalized head surface points coordinates | external file loaded to BESA. Information about file localization saved in .fst file |
| Export | .avr | ASCII vectorized data file | Can be generated by "File → Export…" |
| Export | .dat | simple binary matrix with data | Can be generated by "File → Export…" |
| Export | .edf | EDF+ (European data format) data file | Can be generated by "File → Export…" |
| Export | .foc | BESA continuous native data file | Can be generated by "File → Export…" |
| Export | .fsg | BESA averaged native data file | Can be generated by "File → Export…" |
| Export | .generic | Additional header file for binary data (.dat) | file automatically created when binary data file was exported. |
| Export | .mul | ASCII multiplexed data file | Can be generated by File->Export… |
| Export | 0.001, 0.002 … | ASCII vectorized or multiplexed epochs around triggers | Can be generated by File->Export… File extension indicates epoch number |
| Top Viewer | .bmp | bitmap file | Save of current state of Top Viewer (File menu, Save as Bitmap...) |
| Top Viewer | .eps | EPS graphic file | Save of current state of Top Viewer (File menu, Save as eps file...) |
| Top Viewer | .tva | Top viewer arrangement | On Top Viewer close, if settings or electrode position was changed |
| Top Viewer | .tvs | Top Viewer settings | On Top Viewer close, if settings or electrode position was changed |
| Time Frequency Analysis | .tfc | Averaged time-frequency data | Can be created when Time-Frequency Analysis is used ("ERP → coherence tab") |
| Time Frequency Analysis | .tfcs | Single trial time-frequency data | Can be created when Time-Frequency Analysis is used ("ERP → coherence tab") |
| Source Analysis | .bmp | bitmap file | Save of current state of 3D window ("File → Save 3D window as a bitmap...") |
| Source Analysis | .bsa | Source analysis solution (i.e. dipoles) | can be loaded or saved in menu of source analysis window ("File → Save Solution..") |
| Source Analysis | .dat | 3D Image ASCII file or voxel values for each dipole orientation | Can be exported in 3D window of Source Analysis ("Image → Export Image as…") if sources for more than one latency was computed you can select option to save voxel values for each dipole orientation |
| Source Analysis | .hdr | 3D Image ANALYZE file | Can be exported in 3D window of Source Analysis ("Image → Export Image as…") if sources for more than one latency was computed you can also choose option for all latencies |
| Source Analysis | .laura | result file of LAURA | After compiling computation of LAURA in Source Analysis |
| Source Analysis | .loreta | result file of LORETA | After compiling computation of LORETA in Source Analysis |
| Source Analysis | .swf | Source waveforms | can be saved in file menu of source analysis window ("File → Save Source Waveforms...") |
| Source Analysis | .vmp | 3D Image BrainVoyager File (can be written with current resolution or with 1 mm) | Can be exported in 3D window of Source Analysis ("Image → Export Image as…") |
| Source Analysis | .vtc | BrainVoyager VTC File for all latencies | Can be exported in 3D window of Source Analysis ("Image → Export Image as…") if sources for more than one latency was computed |
| Source Analysis | .vts | Image ASCII voxel time series | Can be exported in 3D window of Source Analysis ("Image → Export Image as…") if sources for more than one latency was computed |
| FFT | .faa, .fap, .far, .fai | Exported amplitude (fma), power (fmp), real (fmr) and imaginary part(fmi) of spectrum for average reference (Interpolated-81) montage | One of export options in FFT window "File → Export FFT data menu" with "Interpolated-81" menu item selected (in the same menu) |
| FFT | .fba | Exported Amplitude in Bands | In FFT window menu "File → Export Amplitude in Bands" |
| FFT | .fbp | Exported Power in Bands | In FFT window menu "File → Export Power in Bands" |
| FFT | .fft | result of FFT | In FFT window "File → save…" |
| FFT | .fma, .fmp, .fmr, .fmi | Exported amplitude (fma), power (fmp), real (fmr) and imaginary part(fmi) of spectrum for current montage | One of export options in FFT window "File → Export FFT data" menu with "Current montage" menu item selected (in the same menu) |
