= What's next =
A roadmap to the future developments of Brainstorm.
== Current topics ==
==== Functionnal connectivity ====
* Significance thresholding of the connectivity matrices
==== Documentation ====
* Merging the 12+3 introduction tutorials to illustrate better the latest developments
==== Source modeling ====
* Implementation of a new unified minimum norm/beamformer framework
'''Compatibility'''
* Reading and writing !FieldTrip structures
* Calling !FieldTrip functions from the pipeline editor
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== Recordings ==
* RAW file viewer:
* Pre-load next page of recordings
* Documentation: Add definition of bad segments
* 2DLayout: Doesn't work when changing page => need refresh of !GlobalData.Preferences.!TopoLayoutOptions.!TimeWindow
* EEG reference/storage:
* Intracranial electrodes: Define in the MRI viewer
* Bad channels that can be specified at the program level (for sites that have permanently bad channels) => AS Dubarry
* RAW processing:
* Make it work for all the file formats (at least bandpass filter + sin removal)
* Events: advanced process for recombining. Example: http://www.erpinfo.org/erplab/erplab-documentation/manual/Binlister.html
* Colormaps:
* Create a colormap similar to MNE, where extrema are bright
* NIRS:
* Add new data type
* Display of sensors by pairs oxy/deoxy (red/blue), overlaid
* Images of amplitude: [sensor x time], [trial x time], scout: [trial x time]
* Can be done with Matrix > View as image: extract cluster, concatenate for all trials
* 2D Layout for multiple conditions
* Filtering: Use short FIR filters instead of IIR for bandpass, to limit the ringing<
>Or allow the users to edit the !LowStop parameter in bst_bandpass.
* Nicer 2D topographies, standardized
* Show easily recordings maximum/values in the file viewer
* Copy figures to clipboard (with the screencapture function)
== Connectivity ==
* Tutorial coherence [1xN]
* Thresholding the connectivity matrices
* t-tests on connectivity measures
* Graph view:
* Fixed scales for intensity sliders
* Fix zoom in one region
* Text bigger
* Too much data in appdata
* Other metrics:
* Coherence by bands: bst_coherence_band_welch.m
* Granger by bands: bst_granger_band.m
* Inter-trial coherence
* Work on progress bars
== Processes ==
* Use Matlab Coder to optimize some processes: Wavelets, bandpass filter, sinusoid removal
* Time-frequency:
* Frequency bands: extended syntax (ex: [2 3 4], 10:5:90, ...)
* How to combine 3 orientations for unconstrained sources
* Display logs as negative
* 2D Layout in spectrum
* Make much faster and more memory efficient (C functions coded by Matti ?)
* TF scouts: should display average of TF maps
* Bandpass:
* Rewrite without the force low-pass filter at Fs/3
* Show warning when using inappropriate high-pass filter (precision too high)
* Artifact detection:
* Detection of bad segments in the RAW files (Beth)
* Artifact rejection like SPM: if bad in 20%, bad everywhere
* Test difference between adjacent samples
* Distributed processing: Brainstorm that can run without Java
* SSP:
* Display warning if changing the !ChannelFlag while there is a Projector applied
* Show where the attenuation is projected:<
>(sum(IK,2)-sum(SSP(k,:)*IK,2)./sum(IK,2)
* Average:
* Remember how many trials were used per channel
* Save standard deviation
* Display standard deviation as a halo around the time series
* Co-registration of MEG runs:
* SSP: Group projectors coming from different files
* Finish validation of the method
* Apply to continuous recordings for correcting head movements
* Current Source Density (CSD) => Ghislaine<
>http://psychophysiology.cpmc.columbia.edu/software/CSDtoolbox/index.html
* Other processes:<
>
* Moving average
* Max
* Median
* Significance test (Dimitrios, Leo)
* Spatial smoothing: check / document parameters
* Contact sheets & movies: use average of time windows instead of single instants, for each picture.
* Optical flow
* Simulation:
* Fix units in simulation processes => no *1e-9 in "simulate recordings"
* Use "add noise" process from Hui-Ling (in Work/Dev/Divers)
== Database ==
* Optimize startup speed
* MEG protocols: More flexible organization of the database; sub-conditions to allow different runs X different conditions.
* Group matrix files => allow to process matrix files by trial types
* Add notes in the folders (text files, visible as nodes in the tree)
* Screen captures: save straight to the database
* Rename multiple files
== Distributed computing ==
* Options from !FieldTrip:
* Loose collection of computers: https://github.com/fieldtrip/fieldtrip/tree/master/peer
* Alternative, with less limitations: http://research.cs.wisc.edu/htcondor/
* Single multicore machine: https://github.com/fieldtrip/fieldtrip/tree/master/engine
* Batch system: https://github.com/fieldtrip/fieldtrip/tree/master/qsub
* Documentation: http://fieldtrip.fcdonders.nl/faq#distributed_computing_with_fieldtrip_and_matlab
* PSOM: http://psom.simexp-lab.org/
== Source modeling ==
* Finish dipole scanning (allow the tab to control multiple figures separately)
* Dipole fitting
* Stenroos 2014 paper: Include the following methods
* Inner and outer skull surfaces generator from !FieldTrip (needs SPM, probably not so different from BST)
* Nolte corrected-sphere model (good model re:Alex)
* Fast BEM models
* Visualize Beamformer results:
* Read CTF SAM .svl
* Display as layers in the MRI viewer
* Unconstrained sources:
* Compute unconstrained and then project on the normal ?
* Difference and stat should be: norm(A) - norm(B)
* Stat and connectivity: what to do? (re-send email John+Sylvain)
* Overlapping spheres: improve the estimation of the spheres for the frontal lobes
* Volume grid:
* Scouts 3D
* Test volume sources with all the subsequent processes (timefreq, stat...)
* Optimize: 3D display (better that 9x9 cubes)
* Optimize: vol_dilate (with 26 neighbors)
* Magnetic extrapolation: Do the same thing with EEG
* Noise covariance matrix:
* Display with figure_image()
* Storage of multiple noise covariance matrices (just like the head models)
* Always save as full, then at inversion time, we can decide between full, heteroskedastic (diagonal) or homoskedastic (i.i.d, scalar)
* Problem of having inividual trials + averages in the condition => Display warning or not?
* Save nAvg in noisecov file, to make it easier to scale to other recordings
* When deploying to other conditions: Apply destination SSP (!NoiseCov = SSP . !NoiseCov . SSP' )
* Sources on surface: Display peak regions over time (time = color) => A.Gramfort
* Simulation: synthesize pseudo data-files from a cortex patch (duration, amplitude, noise)
* Calculate !ImagingKernel * Gain for a scout
* EEG Source modeling: Manage references and bipolar montages properly (maybe not necessary)
* MEG source modeling: Do reconstruction only for a subset of sensors for estimating dipoles?
* Processes compute head model and sources: Additional option to set the file comment
* Time-frequency beamformers:
* Band-pass everything in different frequency bands + Source estimation + TF
* Ask data to Sarang where he sees effects that cannot be extracted with MN followed by TF
* bst_wmne: Dirty patch with schur() to redo the decompositions where eig return complex values. Should be done in a cleaner way
== Anatomy ==
* Warping: Scale option has to be fixed, it is currently very unstable
* Scouts:
* Display edges in the middle of the faces instead of the vertices
* Project scouts betweens subjects and between hemispheres
* Display scouts in a tree: hemisphere, region, subregion
* Downsample to atlas: allow on timefreq/connect files
* Sort scouts by region in process options
* Generate mixed density surfaces
* Import / registration:
* Major bug when importing surfaces for an MRI that was re-oriented manually
* Use mid-gray instead of pial surface?
* Smooth surface: Fix little spikes to irregularities in the mesh
== Statistics ==
* ANOVA: Use LENA functions
* Output = 1 file per effect, all grouped in a node "ANOVA"
* Display several ANOVA maps (from several files) on one single figure, using a "graphic accumulator", towards which one can send any type of graphic object
* Permutation tests:
* t-test only (wilcoxon? sign-test?): paired, equal var, unequal var
* http://www.adscience.fr/uploads/ckfiles/files/html_files/StatEL/statel_wilcoxon.htm
* http://www.mathworks.fr/fr/help/stats/signrank.html
* Less powerful than t-tests
* nb permutations ~ 1000
* maximum statistic over "time" or "time and space"
* Permutations / clustering: cf fieldtrip
* http://fieldtrip.fcdonders.nl/tutorial/cluster_permutation_timelock
* http://fieldtrip.fcdonders.nl/tutorial/cluster_permutation_freq
* Threshold in time: keep only the regions that are significative for contiguous blocks of time, or over a certain number of time points<
> => Process that creates a static representation of a temporal window
* t-test on volume sources
* Paired t-test on unconstrained sources: (convert to flat + Z-score) => !AnneSo
* Question of Gaussianity of the samples: take a subset of samples + Kolmogorov-Smirnov / Shapiro-Wilk test
* http://fr.wikipedia.org/wiki/Test_de_Shapiro-Wilk
* http://stats.stackexchange.com/questions/362/what-is-the-difference-between-the-shapiro-wilk-test-of-normality-and-the-kolmog
* http://www.mathworks.fr/fr/help/symbolic/mupad_ug/perform-shapiro-wilk-test.html
* http://www.mathworks.fr/fr/help/symbolic/mupad_ref/stats-swgoft.html
* http://stackoverflow.com/questions/14383115/shapiro-wilk-test-in-matlab
* Create icons for Stat/PAC, Stat/Sprectrum, etc.
* One sample t-test across subjects
== Input / output ==
* Finish MINC/CIVET integration (finir lecture MINC2: P Bellec)
* Send email to CIVET mailing list when done
* !FieldTrip structures: In / Out (see fieldtrip/utilities/ft_datatype_*)
* EEG File formats:
* EEG !CeeGraph
* EGI: Finish support for epoched files (formats 3,5,7)
* BCI2000 Input (via EEGLAB plugin)
* EEGLAB import:
* Selection of conditions in script mode
* Support for binary AND epoched files (now it's one or the other)
* Allow epoched files with recordings saved in external files (now external files implies continuous recordings)
== Distribution & documentation ==
* Cleaning threads on the forum
* Make the automatic update work when behind a proxy
* Add Help buttons and menus (in popups, dialog windows...) => Links to the website.
* Publication list: Fold by years
* Finish existing tutorials:
* Dipoles
* FieldTrip/Auditory: Extend to MNE/EEGLAB/SPM
* New tutorials:
* MEG connectome
* Describe all the processes
* Statistics
* Coherence (cortico-muscular ?)
* Intra-cranial recordings (Average ref by groups using Comment field)
* Co-register MEG runs (Beth)
* Missing in the introduction tutorials:
* Volume scouts
* First steps: Brainstorm preferences
* First steps: Temporary folder
* Exploration: Clusters
* Headmodel: explain the fields + how to get the constrained leadfield
* Sources: Model evaluation (by simulating recordings)
* Sources: Theshold min. size (not documented yet)
* Time-frequency: Description of "log freq scale" option
* Missing in tutorial "Export to SPM": Add section "Compare with Brainstorm"
* Missing in page "Cite Brainstorm": Add all the methods used in the software
* Rewrite basic 12+3 tutorials: group in one series
== Current bugs ==
* Workshops:
* Create scouts doesn't work: scout created on the other side of the brain
* Import anatomy folder: Out of memory sometimes (restart Matlab)
* Bandpass filter: Out of memory (Auditory workshop)
* Bug workshop Michael (Mint 12/gnome3/linux 3.0.0-12, KWin/Mutter/Compiz)
* Cannot import two .ds folders at once
* Colors inverted in the PSD/TF plots (power vs. log)
* Cannot type the name of a channel in "Detect ECG"
* Smooth TF windows that contain multiple plots
* Record tab: Text of epoch number is too big on MacOS
* in_bst_data_multi: If trials have different sizes, output is random (the one of the first file)
* tree_dependencies: sources files, reprojected on default anatomy; If based on data files that are bad trials, they should be ignored by tree_dependencies, and they are not
* Image viewer has some bugs on some systems
* Screen capture when there is a fading effect in the window manager: captures the window
* Close figure with coherence results should hide the "frequency" slider
* Edit scout in MRI: small modifications cause huge increase of the scout size
* Reports: Text size is too small with Java 1.5 (2006b-2007a)
* Optimize MRI viewer with patch() instead of image()
* Matlab 2014b bug with rmdir/movefile: Enter but never returns from the call
* 2DLayout: Sometimes the lines are not visible
== Geeky programming details ==
* Hide Java panels instead of deleting them
* mri2scs: convert arguments to meters
* Interpolations: Use scatteredInterpolant, griddedInterpolant, triangulation.nearestNeighbor (Matlab 2014b)
* bst_warp and channel_project: Use tess_parametrize_new instead of tess_parametrize
* Shared kernels: do the "get bad channels" operation in a different way (reading all the files is too slow)
* Optimize bst_get:
* Now study and subject have necessarily the same folder name
* Replace big switch with separate functions
* Progress bar:
* Add different levels (to handle sub-processes)
* Make work correctly with RAW on resting tutorial
* Uniformize calls in bst_process/Run
* Add a "Cancel" button
* Line smoothing / anti-aliasing (time series figures)
* Fix all the 'todo' blocks in the code
* Replace handle "0" with bst_get('groot')
* At the end of bst_startup in compiled mode, replace loop with waitfor(jFrame)
* Error message: Add a link to report directly the bug on the forum