visfAtlas Probabilistic Functional Visual Atlas (volume)

Load the Rosenke et al. (2021) probabilistic functional atlas of human occipito-temporal visual cortex ("visfAtlas") as a volumetric MNI atlas. The maximum-probability labelmap contains 33 regions spanning the early retinotopic areas (v1d, v2d, v3d, v1v, v2v, v3v), motion-selective hMT, and category-selective regions for faces, bodies, characters, and places.

Usage

get_visfatlas(outspace = NULL, smooth = FALSE, use_cache = TRUE)

Source

https://download.brainvoyager.com/data/visfAtlas.zip

Arguments

outspace: Optional NeuroSpace object (or TemplateFlow-style descriptor) to resample the atlas into.
smooth: Logical. Whether to smooth parcel boundaries when resampling.
use_cache: Logical. Whether to use cached downloads. Default TRUE.

Value

A list with classes c("visfatlas", "volatlas", "atlas").

Details

The atlas is distributed as a single archive (visfAtlas.zip, ~70 MB) containing FreeSurfer, BrainVoyager, and NIfTI representations. This loader downloads the archive on demand, extracts the volumetric maximum-probability map (visfAtlas_MNI152_volume.nii.gz, 1 mm), and caches both under the neuroatlas user cache directory. Region intensities (1-33) follow the distributed FSL atlas specification; region names use the lower/upper-case source labels with hemisphere prefixes lh_/rh_.

The volume is a single-subject MNI-space grid (182 x 218 x 182, 1 mm); the publication aligns it to the MNI colin27 brain.

Note that the visfAtlas defines V1-V3 (dorsal and ventral) but not hV4; for V4 see get_wang_atlas or get_visual_atlas.

References

Rosenke, M., van Hoof, R., van den Hurk, J., Grill-Spector, K., & Goebel, R. (2021). A Probabilistic Functional Atlas of Human Occipito-Temporal Visual Cortex. Cerebral Cortex, 31(1), 603-619. doi:10.1093/cercor/bhaa246

Examples

if (FALSE) { # \dontrun{
visf <- get_visfatlas()
table(visf$hemi)
get_roi(visf, label = "lh_v1d_retinotopic")
} # }