Assorted csurf screenshots
[click for full-res]
Basic visual polar angle mapping analysis in csurf, showing unfolded
surface view (incl. a single voxel timecourse), and the corresponding
point in a 3D/slice view.
Pial (green) and white matter (yellow) surfaces of human cerebellum. See:Sereno, M.I., J. Diedrichsen, M. Tachrount, G. Testa-Silva, H. d'Arceuil, and C. De Zeeuw (2020) The human cerebellum has almost 80% of the surface area of the neocortex. Proceedings of the National Academy of Sciences USA 117:19538-19543. (PDF)
Close-up of a High resolution csurf surface reconstruction showing
Heschl's gyrus. A quantitative R1 scan with isotropic 0.8 mm wide
voxels was upsampled to 0.5 mm wide voxels and reconstructed using
csurf.
Overlap between topological maps (visual=majenta, auditory=blue,
somatosensory=green), language activation during reading (yellow),
and wordless scene comprehension (white). See:
Sood, M. and M.I. Sereno (2018) Estimating the cortex-wide overlap between wordless narrative scene comprehension, reading comprehension, and topological visual, auditory, and somatomotor maps. bioRxiv 264002. (PDF)
New csurf area name facility for MGH annotations
(short movie here
showing how area names transform with brain pose)
Higher quality gradient arrows
Estimated size of cerebellar granule cell patches in humans (see detailed mapping studies of Shambes, Welker et al.)
human cerebellum cut through one hemisphere showing folding pattern
Underside view of human cerebellum tessellation (flocculus visible
at upper left)
The cerbellar 'tonsils' (paraflocculus, lobule IX)
R-click button bars to access the 57 functs available from the
overloaded buttons that operate on vertexwise labels and MGH annotations
on the "label:" line (D=display, C=cut, CLR=clear, R=read, W=write,
T=timecourse, S=stats, X=cross-corr).
Default tcl script popups (movies, resample fsaverage to subjects,
searchlight operations).
R-click button bars to access 54 functions available from the overloaded
buttons that operate on vertexwise values on the "val:" and "fs:"
lines (R=read, S/V=swap-stat/val, CS=surfcluster, CLR=clear, W=write,
GR=gradient), smoothing operatins (SMOOTH button), and arrows, normals,
and points controls.
Demonstration of detection of reversals in the gradient of a polar
angle scan using the C/tcl function, find_grad_reversals. This is
available from a R-click on the "GR" (gradient) button on the "fs:"
line in tksurfer. The last button on the popup is: "Find Gradient
Reversals"
Demonstration of detection of reversals in the gradient of the
curvature data, showing the gradient arrows (cyan) and the detected
gradient reversals (red)
Single fMRI voxels are typically sampled to multiple surface vertices,
since the cortical surface mesh is finer (~0.9 mm edges). Shown here
are 'representative' vertices, closest to the positional average of
all the vertices that have sampled one fMRI voxel, calculated with
find_uniqsamp_vertices ("UQ" button on the "val3d: line in csurf
tksurfer) -- preferred for surface based comparisions.
Illustration of vertex normals
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