Problems with switching to individual head model - Revision history

Harald at 13:58, 8 August 2023

2023-08-08T13:58:16Z

Jaehyun at 09:10, 4 August 2023

2023-08-04T09:10:57Z

Harald at 12:31, 6 July 2023

2023-07-06T12:31:33Z

Harald: Created page with "This Wiki page provides solutions for common issues when trying to activate the individual head model in BESA Source Analysis. == I get an error message when selecting the i..."

2023-07-06T10:34:45Z

Created page with "This Wiki page provides solutions for common issues when trying to activate the individual head model in BESA Source Analysis. == I get an error message when selecting the i..."

New page

This Wiki page provides solutions for common issues when trying to activate the individual head model in BESA Source Analysis.

== I get an error message when selecting the individual EEG BEM or FEM model in Source Analysis ==
=== Reference electrode ===
A possible reason is that a reference electrode is defined, but was not digitized. In that case:
Close BESA Source Analysis. In BESA Research, select Edit / Channel Configuration. In the channel configuration, switch off the reference electrode.
After accepting with OK, re-start BESA Source Analysis. Now it should work as expected.

[[File:Channel_Config_Ref.png]]

← Older revision		Revision as of 13:58, 8 August 2023
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		+	{{BESAInfobox
		+	\|title = Module information
		+	\|module = BESA Research Standard or higher
		+	\|version = 7.1 or higher
		+	}}
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	This Wiki page provides solutions for common issues when trying to activate the individual head model in BESA Source Analysis.		This Wiki page provides solutions for common issues when trying to activate the individual head model in BESA Source Analysis.

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 === Reference electrode ===
 A possible reason is that a reference electrode is defined, but was not digitized. In that case:
-Close BESA Source Analysis. In BESA Research, select Edit / Channel Configuration. In the channel configuration, switch off the reference electrode.
+# Close BESA Source Analysis.
-After accepting with OK, re-start BESA Source Analysis. Now it should work as expected.
+# In BESA Research, select "Edit / Channel Configuration...". In the channel configuration, switch off the reference electrode.
-[[File:Channel_Config_Ref.png]]
+# After accepting with OK, re-start BESA Source Analysis. Now it should work as expected.
 === Electrodes were placed by BESA MRI but not all electrode labels conform to 10-10 standard ===
-In this scenario, there are no digitized electrode positions; instead, standard electrode labels were used by BESA MRI for placing them onto the re-constructed head surface.
+In this scenario, there are no digitized electrode positions; instead, standard electrode labels were used by BESA MRI for placing them onto the re-constructed head surface.<br>
 If not all electrodes conform to the 10-10 standard, then the leadfields cannot be created for these electrodes. The way forward here is to:
 # set the channels that do not have 10-10 labels to bad
-# change the montage to "Average Reference - original"
+# change the montage to "Original Average Reference"
-[[File:Org_Av_Ref.png]]
+#: [[File:Org_Av_Ref.png|500px]]
 # export the data using the option "Current Montage"
-[[File:Export_currMtgpng.png]]
+#: [[File:Export_currMtgpng.png|500px]]
 # open the exported data file. Now follow the workflow for placing 10-10 electrodes in BESA MRI, and computing the BEM / FEM for these electrodes.