########################################### Assorted csurf screenshots ########################################### -------------- areanames.jpg -------------- New csurf area name facility for MGH annotations -------------- areanames.mp4 -------------- Short movie of how area names transform with brain pose ----------------- betterarrows.jpg ----------------- Higher quality gradient arrows ------------------ cereb-patches.jpg ------------------ Estimated size of cerebellar granule cell patches in humans (see detailed mapping studies of Shambes, Welker et al.) ------------- cerebcut.jpg ------------- Human cereballum cut through one hemisphere showing folding pattern --------------- cerebsurfs.jpg --------------- 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. https://pages.ucsd.edu/~msereno/papers/Cereb20.pdf --------------- cerebunder.jpg --------------- Underside view of human cerebllum tessellation (flocculus visible at upper left) ------------------------------- closeup-cerebellar-tonsils.jpg ------------------------------- The cerbellar 'tonsils' (paraflocculus, lobule IX) ---------------------- csurf-polar-angle.jpg ---------------------- 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. ---------------------- hires-mesh-Heschl.jpg ---------------------- 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. ------------------- mapslangscenes.jpg ------------------- 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. https://www.biorxiv.org/content/biorxiv/early/2018/02/18/264002.full.pdf ---------------------- reversals-4polavg.jpg ---------------------- 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" ------------------------------ reversals-curv+gradarrows.jpg ------------------------------ Demonstration of detection of reversals in the gradient of the curvature data, showing the gradient arrows (cyan) and the detected gradient reversals (red) ------------------- uniqsamp-vertices.jpg ------------------- 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. ------------------- vertex-normals.jpg ------------------- Illustration of vertex normals