Export Single Trial Data - Revision history

Mateusz at 14:53, 5 May 2021

2021-05-05T14:53:09Z

Mateusz at 14:51, 5 May 2021

2021-05-05T14:51:56Z

Mateusz at 14:49, 5 May 2021

2021-05-05T14:49:40Z

Mateusz at 14:48, 5 May 2021

2021-05-05T14:48:33Z

Robert at 11:05, 2 February 2021

2021-02-02T11:05:35Z

Robert at 11:04, 2 February 2021

2021-02-02T11:04:47Z

Jaehyun: /* Data in Matlab */

2018-12-07T12:21:09Z

‎Data in Matlab

Jaehyun at 13:11, 5 July 2017

2017-07-05T13:11:57Z

Harald at 15:08, 8 April 2016

2016-04-08T15:08:18Z

Harald at 09:10, 8 April 2016

2016-04-08T09:10:29Z

@@ Line 25: / Line 25: @@
 Make sure that the options "Epochs around triggers" and "Original data" are selected. In the section "Target formats", choose the option of choice:
 * If you want to create ASCII files for offline analysis, select "[[ASCII File Format#ASCII Multiplexed file format|ASCII multiplexed]]" or "[[ASCII File Format#ASCII Vectorized file format|ASCII vectorized]]"
-* If you want to analyze data directly in Matlab, select "Send to MATLAB"
+* If you want to analyze data directly in Matlab, select "[[#Data in MATLAB|Send to MATLAB]]"
 For the "''Interval...''" select a long enough time span as shown below:

@@ Line 24: / Line 24: @@
 Make sure that the options "Epochs around triggers" and "Original data" are selected. In the section "Target formats", choose the option of choice:
-* If you want to create ASCII files for offline analysis, select "ASCII multiplexed" or "ASCII vectorized"
+* If you want to create ASCII files for offline analysis, select "[[ASCII File Format#ASCII Multiplexed file format|ASCII multiplexed]]" or "[[ASCII File Format#ASCII Vectorized file format|ASCII vectorized]]"
 * If you want to analyze data directly in Matlab, select "Send to MATLAB"

@@ Line 18: / Line 18: @@
 === Export data from BESA ===
-Select "''File &rarr; Export...''". The [[Export:Export Dialog|export dialog]] opens:
+Select "''File &rarr; Export...''". The [[Export#Export Dialog|export dialog]] opens:
 [[File:Export_epochs_1.png|500px|thumb|c|none|Figure 1 "Export data" dialog]]

@@ Line 18: / Line 18: @@
 === Export data from BESA ===
-Select "''File &rarr; Export...''". The export dialog opens:
+Select "''File &rarr; Export...''". The [[Export:Export Dialog|export dialog]] opens:
 [[File:Export_epochs_1.png|500px|thumb|c|none|Figure 1 "Export data" dialog]]

← Older revision		Revision as of 11:05, 2 February 2021
Line 84:		Line 84:
	</source >		</source >

−	[[Category:ERP/ERF]] [Category:Data Import/Export‏‎ ]	+	[[Category:ERP/ERF]] [[Category:Data Import/Export‏‎]]

← Older revision		Revision as of 11:04, 2 February 2021
Line 84:		Line 84:
	</source >		</source >

−	[[Category:ERP/ERF]]	+	[[Category:ERP/ERF]] [Category:Data Import/Export‏‎ ]

@@ Line 46: / Line 46: @@
 In case of Matlab, it opens the Matlab window and creates the structure "besa_channels". From Matlab save the structure as "besa_channels.mat".
-=== Data in Matlab ===
+=== Data in MATLAB ===
-The Matlab structure "besa_channels" contains several fields like in the following example of a 64-channel EEG file with 39 trials that survived the artifact scan:
+The MATLAB structure <code>besa_channels</code> contains several fields like in the following example of a 64-channel EEG file with 39 trials that survived the artifact scan:
-<source lang="dos">
+<source lang="matlab">
                datafile: [1x93 char]
            channeltypes: {1x64 cell}
@@ Line 73: / Line 73: @@
 <source lang="dos">
-besa_channels.data
+>> besa_channels.data
 x39 struct array with fields:
      amplitudes

@@ Line 7: / Line 7: @@
 == Rationale ==
 This article describes how to export single-trial EEG or MEG raw data for further analysis in an external program, e.g. in Matlab.
 == Steps to follow ==
-=== 1 Load data in BESA ===
 The data are then displayed in the review window. Now you can either
 * use the ERP module to define a condition and reject any trials with artifacts (see the BESA Help section on ERP for more information), or
 * directly move to the export of all epochs around a particular trigger.
-=== 2 Export data from BESA ===
+=== Export data from BESA ===
-[[File:Export_epochs_1.png|thumb|500px|Figure 1 "Export data" dialog]]
 Make sure that the options "Epochs around triggers" and "Original data" are selected. In the section "Target formats", choose the option of choice:
@@ Line 24: / Line 29: @@
 For the "''Interval...''" select a long enough time span as shown below:
-[[File:Export_epochs_2.png|none|213px|Figure 2 "Epoch around trigger" dialog]]
+[[File:Export_epochs_2.png|213px|thumb|c|none|Figure 2 "Epoch around trigger" dialog]]
 Then click the "''Triggers...''" button to select which trigger code or condition will be used.
-[[File:Export_epochs_3.png|none|500px|Figure 3 "Trigger codes" dialog]]
+If you want to export the epochs around a trigger code: Make sure that the trigger code you want is selected - e.g. the trigger code 1 in this example.
 If you want to export the epochs around a condition: Check the box "Conditions". Then ensure that the condition of choice is selected (e.g. condition "Rare" in the example in Figure 4).
 After clicking "OK" BESA Research either exports the data, or - if that option was chosen - sends the data to Matlab.
 In case of Matlab, it opens the Matlab window and creates the structure "besa_channels". From Matlab save the structure as "besa_channels.mat".
-=== 3 Data in Matlab ===
 The Matlab structure "besa_channels" contains several fields like in the following example of a 64-channel EEG file with 39 trials that survived the artifact scan:
-<tt>
                datafile: [1x93 char]
            channeltypes: {1x64 cell}
@@ Line 58: / Line 68: @@
                datatype: 'Epoched_Data'
                    data: [1x39 struct]
-</tt>
+</source >
 The sub-structure data contains the latencies and the measured amplitudes for each channel and trial:
-<tt>
+<source lang="dos">
 besa_channels.data
 » ans =
-−
 x39 struct array with fields:
      amplitudes
@@ Line 72: / Line 82: @@
      latencies
      event
-</tt>
+</source >
 [[Category:ERP/ERF]]

← Older revision		Revision as of 15:08, 8 April 2016
Line 1:		Line 1:
		+	{{BESAInfobox
		+	\|title = Module information
		+	\|module = BESA Research Basic or higher
		+	\|version = 5.2 or higher
		+	}}
		+
	== Rationale ==		== Rationale ==
	This article describes how to export single-trial EEG or MEG raw data for further analysis in an external program, e.g. in Matlab.		This article describes how to export single-trial EEG or MEG raw data for further analysis in an external program, e.g. in Matlab.

← Older revision		Revision as of 09:10, 8 April 2016
Line 67:		Line 67:
	event		event
	</tt>		</tt>
		+
		+	[[Category:ERP/ERF]]