Functional Segregation of the Middle Temporal Visual Motion Area Revealed With Coactivation-Based Parcellation.

Abstract:

:Traditionally, the visual motion area (MT) is considered as a brain region specialized for visual motion perception. However, accumulating evidence showed that MT is also related to various functions, suggesting that it is a complex functional area and different functional subregions might exist in this area. To delineate functional subregions of this area, left and right masks of MT were defined using meta-analysis in the BrainMap database, and coactivation-based parcellation was then performed on these two masks. Two dorsal subregions (Cl1 and Cl2) and one ventral subregion (Cl3) of left MT, as well as two dorsal-anterior subregions (Cl1 and Cl2), one ventral-anterior subregion (Cl3), and an additional posterior subregion (Cl4) of right MT were identified. In addition to vision motion, distinct and specific functions were identified in different subregions characterized by task-dependent functional connectivity mapping and forward/reverse inference on associated functions. These results not only were in accordance with the previous findings of a hemispheric asymmetry of MT, but also strongly confirmed the existence of subregions in this region with distinct and specific functions. Furthermore, our results extend the special role of visual motion perception on this area and might facilitate future cognitive study.

journal_name

Front Neurosci

authors

Gao J,Zeng M,Dai X,Yang X,Yu H,Chen K,Hu Q,Xu J,Cheng B,Wang J

doi

10.3389/fnins.2020.00427

subject

Has Abstract

pub_date

2020-05-27 00:00:00

pages

427

eissn

1662-4548

issn

1662-453X

journal_volume

14

pub_type

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