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.

海洋环境与陆地环境相比存在显着差异，不可避免地会对水手的大脑功能活动产生一定的影响，导致大脑功能连接（FC）的差异化变化。因此，探讨海洋环境对水手大脑功能活动的影响具有重要意义。这不仅是航海者更细致的研究工作的需要，也是准确揭示海洋环境影响的必然要求。本文利用33名船员航行前后的功能磁共振图像数据，研究了船员在激活体素水平上的脑FCs变化，其中激活体素是通过独立成分分析结合解剖自动标记模板获得的。然后，对这些激活体素的相应脑区之间的FC进行统计分析，以获得航行前后水手之间具有显着差异的FC（DFC）。最后，利用FCs和DFCs作为支持向量机中的特征样本，实现了对航行前后水手的分类评价。结果表明，激活脑区之间的 DFCs 对航行前后的水手有更好的区分性能，尤其是前额叶和枕叶内的 FCs 以及它们之间的 FCs，在航行前后水手之间存在显着差异。对这些激活体素对应脑区之间的FCs进行统计分析，得到航海前后水手间差异显着的FCs（DFCs）。最后，利用FCs和DFCs作为支持向量机中的特征样本，实现了对航行前后水手的分类评价。结果表明，激活脑区之间的 DFCs 对航行前后的水手有更好的区分性能，尤其是前额叶和枕叶内的 FCs 以及它们之间的 FCs，在航行前后水手之间存在显着差异。对这些激活体素对应脑区之间的FCs进行统计分析，得到航海前后水手间差异显着的FCs（DFCs）。最后，以FCs和DFCs作为支持向量机中的特征样本，实现了对航行前后水手的分类评价。结果表明，激活脑区之间的 DFCs 对航行前后的水手有更好的区分性能，尤其是前额叶和枕叶内的 FCs 以及它们之间的 FCs，在航行前后水手之间存在显着差异。