GlossaryΒΆ

Terms Contextual definitions
Allocortex Three-layered cortex (hippocampus and piriform cortex) which exhibits peculiar characteristics prenatally and was labelled as allogenetic (Vogt 1910, Sanides 1969)
Cortical confluence Mergence of cortical types (iso- and allo-cortex) in the mesiotemporal lobe (Paquola et al., 2020)
Cytoarchitecture Organisation of cells
Equivolumetric Intracortical surfaces constructed in such a way that preserves the volume of each strata (Waehnert et al., 2014; Wagstyl et al., 2019)
fsaverage Standard surface in FreeSurfer
fs_LR Standard surface in HCP (Van Essen et al. 2012)
Gradients Graded spatial variations in a neurobiological feature
Isocortex Majority of the cortex, which exhibits six layers prenatally. Short for isogenetic cortex (Vogt 1910, Sanides 1969)
Microstructure profile A sequence of intracortical intensity values (staining or MRI) running from the pial to white matter, ie: in the direction of cortical column (Paquola et al., 2019)
Moments Quantitative measures related to the shape of a microstructure profile
Parcellated Aggregation (usually averaging) of a neurobiological feature within a pre-defined cortical area
Sensory-fugal A functional characterisation of the cortical gradient that runs from externally-focused primary sensory areas to limbic areas that are relatively decoupled from environmental input (Mesulam 2000). The term fugal is related to a fugue-state; a mental state that is decoupled from external reality.
Vertex A point on a cortical mesh. In standard practice, the organisation of vertices is preserved across different depths (ie: grey and white matter boundaries), when the meshes come from the same reconstruction procedure.