Definition: Connectivity refers to the connections between brain regions that are spatially distributed but anatomically or functionally connected subserving information processing. There are three related forms of connectivity: (i) anatomical connectivity, (ii) functional connectivity and (iii) effective connectivity. Anatomical connectivity (AC) refers to the structural connections between brain regions (i.e., connectome). Functional connectivity (FC) refers to brain regions with a temporal dependency activation pattern (evaluated via statistical analysis). Effective connectivity (EC) refers to the causal role of a brain region activation over another one.

Alternative definition: (if applicable)



Related terms: anatomical connectivity, functional connectivity, effective connectivity  

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