Pages tagged with "faq"

Are the FieldTrip lectures available on video?
Can I compare EEG channels between different electrode caps?
Can I do combined EEG and MEG source reconstruction?
Can I get an offline version of the documentation on the website?
Can I prevent "external" toolboxes from being added to my MATLAB path?
Can I restrict the source reconstruction to the grey matter?
Can I use FieldTrip without MATLAB license?
Can I use Octave instead of MATLAB?
Can I use the FieldTrip logo on my poster?
Do I need to resample my data, and if so, how is this to be done?
Does a firewall affect the communication between peers?
Does it make sense to subtract the ERP prior to time frequency analysis, to distinguish evoked from induced power?
Does the FieldTrip realtime buffer only work with MATLAB?
Frequently Asked Questions
How are electrodes, magnetometers or gradiometers described?
How are the different head and MRI coordinate systems defined?
How are the Left and Right Pre-Auricular (LPA and RPA) points defined?
How are the various MATLAB data structures defined?
How can I anonymize data processed in FieldTrip?
How can I anonymize or deidentify a BrainVision dataset?
How can I anonymize or deidentify a CTF dataset?
How can I anonymize or deidentify an anatomical MRI?
How can I anonymize or deidentify DICOM files?
How can I append the files of two separate recordings?
How can I change the head localization in a CTF dataset?
How can I check or decipher the sequence of triggers in my data?
How can I check whether the grid that I have is aligned to the segmented volume and to the sensor gradiometer?
How can I combine FieldTrip with peer distributed computing?
How can I compile the mex files and command-line executable?
How can I compile the mex files on 64-bit Windows?
How can I compile the mex files on macOS?
How can I compute inter-trial coherence?
How can I consistently represent artifacts in my data?
How can I convert an anatomical MRI from DICOM into CTF format?
How can I convert one dataformat into an other?
How can I deal with a discontinuous Neuralynx recording?
How can I debug a problematic distributed job?
How can I debug my analysis script if a FieldTrip function gives an error?
How can I define neighbouring sensors?
How can I determine the anatomical label of a source or electrode?
How can I determine the number of threads that MATLAB uses?
How can I determine the onset of an effect?
How can I do time-frequency analysis on continuous data?
How can I extend the reading functions with a new dataformat?
How can I find out what eventvalues and eventtypes there are in my data?
How can I fine-tune my BEM volume conduction model?
How can I fix a corrupt CTF meg4 file?
How can I fix a corrupt CTF res4 header file?
How can I import my own data format?
How can I inspect the electrode impedances of my data?
How can I interpret the different types of padding in FieldTrip?
How can I keep track of changes to the code?
How can I merge two datasets that were acquired simultaneously with different amplifiers?
How can I monitor a subject's head position during a MEG session?
How can I play back EEG/MEG and synchronous audio or video?
How can I preprocess a dataset that is too large to fit into memory?
How can I prevent a job from executing twice?
How can I process continuous data without triggers?
How can I read all channels from an EDF file that contains multiple sampling rates?
How can I read and write files if I use other people's peers?
How can I read corrupted (unsaved) CTF data?
How can I read EGI mff data without the JVM?
How can I set up the peer distributed computing on a large Linux cluster?
How can I set up the peer distributed computing on a single multicore computer?
How can I set up the peer distributed computing on a small number of computers?
How can I share my MEG data?
How can I stop the different threads created by peercontroller and peerworker?
How can I test for correlations between neuronal data and quantitative stimulus and behavioral variables?
How can I test whether a behavioral measure is phasic?
How can I transform trigger values from bits to decimal representation with a trialfun?
How can I use my MacBook Pro for stimulus presentation in the MEG lab?
How can I use the command-line peerworker and optimize the MATLAB licenses?
How can I use the databrowser?
How can I use the ivar, uvar, wvar and cvar options to precisely control the permutations?
How can I visualize a localspheres volume conductor model?
How can I visualize the different geometrical objects that are needed for forward and inverse computations?
How can I visualize the neuromag head position indicator coils?
How do homogenous coordinate transformation matrices work?
How do I avoid having to allocate N copies of my data if I want to execute N jobs?
How do I construct a layout file for the plotting functions?
How do I install the OpenMEEG binaries
How do I prevent FieldTrip from printing the time and memory after each function call?
How does a difference in trial numbers per condition affect my statistical test
How does MTMCONVOL work?
How does the CTF higher-order gradiometer work?
How does the filter padding in preprocessing work?
How does the peer smartshare algorithm work?
How does the smartmem algorithm work?
How fast is the FieldTrip buffer for realtime data streaming?
How is anatomical, functional or statistical "volume data" described?
How is the segmentation defined?
How many lines of code does FieldTrip consist of?
How many people are subscribed to the email discussion list?
How NOT to interpret results from a cluster-based permutation test
How should I call peercellfun when a function requires many inputs (e.g., key-value pairs)?
How should I get started with the FieldTrip realtime buffer?
How should I prepare for the upcoming FieldTrip workshop?
How should I refer to FieldTrip in my publication?
How should I report the positions of the fiducial points on the head?
How should I share example data with the email list or developers?
How should I specify the coordinate systems in a BIDS dataset?
How should I specify the fiducials for electrode realignment?
How to ask good questions to the community?
How to change the MRI orientation, the voxel size or the field-of-view?
How to compile MATLAB code into stand-alone executables?
How to coregister an anatomical MRI with the gradiometer or electrode positions?
How to get started with distributed computing using engine?
How to get started with distributed computing using qsub?
How to get started with peer distributed computing on my own desktop computer?
How to get started with the MATLAB distributed computing toolbox?
How to interpret the sign of the phase slope index?
How to select the correct SPM toolbox?
How to test an interaction effect using cluster-based permutation tests?
I am getting strange artifacts in figures that use opacity
I am having problems downloading
I am having problems printing figures that use opacity
I am having problems reading the CTF .hc headcoordinates file
I am working at the Donders, should I also download FieldTrip?
I have problems reading in neuroscan .cnt files. How can I fix this?
I used ICA on my MEG data from before 2012 and now FieldTrip crashes, why is that?
I used to work with trl-matrices that have more than 3 columns. Why is this not supported anymore?
In what way can frequency domain data be represented in FieldTrip?
Is it good or bad to have dipole locations outside of the brain for which the source reconstruction is computed?
Is it important to have accurate measurements of electrode locations for EEG source reconstruction?
Is it OK for vertices/dipoles to stick out of the volume conductor?
Is it possible to keep track of trial-specific information in my analysis pipeline?
MATLAB complains about a missing or invalid mex file, what should I do?
MATLAB complains that mexmaci64 cannot be opened because the developer cannot be verified
MATLAB does not see the functions in the "private" directory
MATLAB version 7.3 (2006b) crashes when I try to do ...
My MRI is upside down, is this a problem?
Reading is slow, can I write my raw data to a more efficient file format?
Replacements for functions from MathWorks toolboxes
Should I add FieldTrip with all subdirectories to my MATLAB path?
Should I rereference prior to or after ICA for artifact removal?
Should I use a Polhemus or a Structure Sensor to record electrode positions?
The databrowser crashes and destroys the whole MATLAB session, how can I resolve this?
What are the differences between the old and the new implementation of 'mtmconvol' in ft_freqanalyis?
What are the differences between the old and the new implementation of 'mtmftt' in ft_freqanalyis?
What are the differences between the old and the new implementation of 'wavelet' (formerly 'wltconvol') in ft_freqanalyis?
What are the different approaches I can take for distributed computing?
What are the different Neuromag/Elekta/Megin and Yokogawa layouts good for?
What are the MATLAB and external requirements?
What are the MATLAB requirements for using FieldTrip?
What are the units of the data and of the derived results?
What convention is used to define absolute phase in 'mtmconvol', 'wavelet' and 'mtmfft'?
What dataformats are supported?
What does "padding not sufficient for requested frequency resolution" mean?
What does a typical call to a FieldTrip function look like?
What happens if a peer distributed job fails to execute properly?
What happens with a peer distributed job that has an error on the worker?
What is the conductivity of the brain, CSF, skull and skin tissue?
What is the difference between coherence and coherency?
What is the difference between the ACPC, MNI, SPM and TAL coordinate systems?
What is the format of the layout file which is used for plotting?
What is the idea behind statistical inference at the second-level?
What is the plotting convention for anatomical MRIs?
What is the relation between "events" (such as triggers) and "trials"?
What kind of cable do I need for a serial port connection between two computers?
What kind of filters can I apply to my data?
What kind of volume conduction models of the head (head models) are implemented?
Where can I find open access MEG/EEG data?
Where can I find the dipoli command-line executable?
Where is the anterior commissure?
Which datasets are used in the documentation and where are they used?
Which external toolboxes are used by FieldTrip?
Which version of FieldTrip should I download?
Why am I not allowed to post to the discussion list?
Why am I not getting integer frequencies?
Why am I not receiving emails from the discussion list?
Why am I receiving warnings about too many bouncing emails?
Why are so many of the interesting functions in the private directories?
Why are the fileio functions stateless, does the fseek not make them very slow?
Why are the peers using multicast to announce themselves?
Why are there multiple neighbour templates for the Neuromag306 system?
Why does my anatomical MRI show upside-down when plotting it with ft_sourceplot?
Why does my EEG headmodel look funny?
Why does my ICA output contain complex numbers?
Why does my output.freq not match my cfg.foi when using 'mtmconvol' in ft_freqanalyis?
Why does my output.freq not match my cfg.foi when using 'mtmfft' in ft_freqanalyis
Why does my output.freq not match my cfg.foi when using 'wavelet' (formerly 'wltconvol') in ft_freqanalyis?
Why does my TFR contain NaNs?
Why does my TFR look strange (part I, demeaning)?
Why does my TFR look strange (part II, detrending)?
Why does peercellfun resubmit jobs that take too long to get started?
Why is FieldTrip developed separately from EEGLAB?
Why is my message rejected from the email discussion list?
Why is the source model deformed or incorrectly aligned after warping template?
Why is there a residual 50Hz line-noise component after applying a DFT filter?
Why is there a rim around the brain for which the source reconstruction is not computed?
Why should I use an average reference for EEG source reconstruction?
Why should I use the cfg.correcttail option when using statistics_montecarlo?
Why was FieldTrip maintained in SVN and not in Git?