The Study of Sailors’ Brain Activity Difference Before and After Sailing Using Activated Functional Connectivity Pattern

摘要

The maritime environment is significantly different compared with the terrestrial environment, which will inevitably have a certain impact on the brain functional activities of sailors and lead to differential changes in the brain functional connectivity (FC). Therefore, it has a great significance to explore the impact of the marine environment on the brain functional activities of sailors. It is not only the need for more detailed research work of sailors, but also an inevitable requirement for accurately revealing the impact of the marine environment. In this paper, the functional magnetic resonance image data of 33 sailors before and after sailing were used to study the brain FCs changes of sailors at the activated voxels level, in which the activated voxels were obtained by independent component analysis combined with Anatomical Automatic Labelling template. Then, the FCs between the corresponding brain regions of these activated voxels were statistically analyzed to obtain the FCs with significant differences (DFCs) between sailors before and after sailing. Finally, the classification evaluation of sailors before and after sailing was realized by using the FCs and DFCs as the characteristic samples in support vector machine. The results indicated that the DFCs between the activated brain regions had better discriminative performance for sailors before and after sailing, especially for the FCs within Prefrontal lobe and Occipital lobe as well as those between them which showed a significant difference between sailors before and after sailing.