Difference between revisions of "Importing Digitized Coordinates"
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== How do I import digitized electrode coordinates and head surface points == | == How do I import digitized electrode coordinates and head surface points == | ||
| − | Digitized electrode locations can be provided in a surface point file (extension *.sfp) in ASCII format. It is recommended that the first three digitized coordinates are the fiducials (fiduciary points), labeled ‘FidT9’, ‘FidT10′, FidNz’, followed by electrodes, and possibly additional skin points. A detailed description of the file and how to import it is given in the BESA help files (chapter: Working with Electrodes and Surface Locations). | + | Digitized electrode locations can be provided in a surface point file (extension *.sfp) in ASCII format. It is recommended that the first three digitized coordinates are the fiducials (fiduciary points), labeled ‘FidT9’, ‘FidT10′, FidNz’, followed by electrodes, and possibly additional skin points. A detailed description of the file and how to import it is given in the BESA help files (chapter: [[Electrodes_and_Surface_Locations|Working with Electrodes and Surface Locations]]). |
An example sfp file could look like this: | An example sfp file could look like this: | ||
| − | < | + | <source lang="dos"> |
FidNz -10.89 0.04 -4.30 | FidNz -10.89 0.04 -4.30 | ||
| − | |||
FidT9 -0.61 -7.78 -5.24 | FidT9 -0.61 -7.78 -5.24 | ||
| − | |||
FidT10 -0.70 7.34 -5.86 | FidT10 -0.70 7.34 -5.86 | ||
| − | |||
E1 -1.52 -2.31 6.98 | E1 -1.52 -2.31 6.98 | ||
| − | |||
E2 -1.65 -7.67 2.54 | E2 -1.65 -7.67 2.54 | ||
| − | |||
E3 -4.26 -8.31 -3.86 | E3 -4.26 -8.31 -3.86 | ||
| − | |||
... | ... | ||
| − | </ | + | </source> |
| − | The file is read in using the dialog "Channel and digitized head surface point information" in menu "File → Head Surface Points and Sensors → Load Coordinate Files" (use 'CTRL-L' key on the keyboard). | + | The file is read in using the dialog "Channel and digitized head surface point information" in menu "'''File → Head Surface Points and Sensors → Load Coordinate Files'''" (use '''CTRL-L''' key on the keyboard). |
== How do I check the result == | == How do I check the result == | ||
Revision as of 09:43, 13 July 2017
| Module information | |
| Modules | BESA Research Basic or higher |
| Version | 5.2 or higher |
How do I import digitized electrode coordinates and head surface points
Digitized electrode locations can be provided in a surface point file (extension *.sfp) in ASCII format. It is recommended that the first three digitized coordinates are the fiducials (fiduciary points), labeled ‘FidT9’, ‘FidT10′, FidNz’, followed by electrodes, and possibly additional skin points. A detailed description of the file and how to import it is given in the BESA help files (chapter: Working with Electrodes and Surface Locations). An example sfp file could look like this:
FidNz -10.89 0.04 -4.30 FidT9 -0.61 -7.78 -5.24 FidT10 -0.70 7.34 -5.86 E1 -1.52 -2.31 6.98 E2 -1.65 -7.67 2.54 E3 -4.26 -8.31 -3.86 ...
The file is read in using the dialog "Channel and digitized head surface point information" in menu "File → Head Surface Points and Sensors → Load Coordinate Files" (use CTRL-L key on the keyboard).
How do I check the result
You can check on the correct reading of the file using the View Head Surface points window (menu "File → Head Surface Points and Sensors → View" or "V" on the keyboard).
See also the article Verify Electrode Coordinates.
