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getting_started:neuromag [2018/10/21 15:07]
42.49.180.224 [Introduction]
getting_started:neuromag [2017/08/17 11:21] (current)
127.0.0.1 external edit
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 All data in Neuromag is stored in *.fif files, where the files can contain different data objects. The following data objects can be read and used in FieldTrip: MEG data, EEG data, gradiometer positions, single sphere models, BEM models (using the MEG-CALC toolbox). FieldTrip reads Neuromag fif files using low-level Matlab functions from the MNE toolbox from Matti Hamalainen, see [[http://​www.nmr.mgh.harvard.edu/​martinos/​userInfo/​data/​MNE_register/​index.php|MNE software]]. This will work on any platform, as it is based on open-source m-files. To load the data into Matlab you need the MNE toolbox from Matti Hämäläinen,​ see [[http://​www.nmr.mgh.harvard.edu/​martinos/​userInfo/​data/​MNE_register/​index.php|MNE software]]. ​ All data in Neuromag is stored in *.fif files, where the files can contain different data objects. The following data objects can be read and used in FieldTrip: MEG data, EEG data, gradiometer positions, single sphere models, BEM models (using the MEG-CALC toolbox). FieldTrip reads Neuromag fif files using low-level Matlab functions from the MNE toolbox from Matti Hamalainen, see [[http://​www.nmr.mgh.harvard.edu/​martinos/​userInfo/​data/​MNE_register/​index.php|MNE software]]. This will work on any platform, as it is based on open-source m-files. To load the data into Matlab you need the MNE toolbox from Matti Hämäläinen,​ see [[http://​www.nmr.mgh.harvard.edu/​martinos/​userInfo/​data/​MNE_register/​index.php|MNE software]]. ​
  
-Alternative support for Neuromag data is implemented by calling the mex files from [[http://​www.kolumbus.fi/​kuutela/​programs/​meg-pd/​|Kimmo Uutela'​s MEG-PD toolbox]]. The files in the MEG-PD toolbox are not included with FieldTrip, but you can download them[[http://​www.kolumbus.fi/​kuutela/​programs/​meg-pd/​|here]]. Extract the toolbox and put it on your matlab path, or copy the files into the "fieldtrip/​private&​quot; ​directory. This is used if you select the file format as "neuromag_fif".+Alternative support for Neuromag data is implemented by calling the mex files from [[http://​www.kolumbus.fi/​kuutela/​programs/​meg-pd/​|Kimmo Uutela'​s MEG-PD toolbox]]. The files in the MEG-PD toolbox are not included with FieldTrip, but you can download them[[http://​www.kolumbus.fi/​kuutela/​programs/​meg-pd/​|here]]. Extract the toolbox and put it on your matlab path, or copy the files into the "fieldtrip/​private" ​directory. This is used if you select the file format as "neuromag_fif". 
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 +Note that the MEG-PD toolbox will only function on 32-bit machines, and requires either a Linux or HP-UX system to run. As the mex files are compiled code, it is not possible to modify these to run on 64-bit machines (which are becoming increasingly common), at present
  
-Note that the MEG-PD toolbox will only function on 32-bit machines, and requires either a Linux or HP-UX system to run. As the mex files are compiled code, it is not possible to modify these to run on 64-bit machines (which are becoming increasingly common), at present. 
 ===== Set Path ===== ===== Set Path =====
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     - Should I use or avoid using MaxFilter? ​     - Should I use or avoid using MaxFilter? ​
         *It depends on several factors, including the level of noise in your recording, the presence of artefacts from outside the helmet and large amounts of head movement. Optimising source-localisation for Maxfiltered data is still under development. N.B. If you used Internal Active Shielding (IAS) running Maxfilter is obligatory         *It depends on several factors, including the level of noise in your recording, the presence of artefacts from outside the helmet and large amounts of head movement. Optimising source-localisation for Maxfiltered data is still under development. N.B. If you used Internal Active Shielding (IAS) running Maxfilter is obligatory
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