Eriksson Johan
Umeå Center for Functional Brain Imaging (UFBI), Umeå University, 901 87 Umeå, Sweden; Department of Integrative Medical Biology, Physiology Section, Umeå University, S-901 87 Umeå, Sweden.
Conscious Cogn. 2017 Oct;55:26-34. doi: 10.1016/j.concog.2017.07.007. Epub 2017 Jul 25.
Integration is commonly viewed as a key process for generating conscious experiences. Accordingly, there should be increased activity within the neural correlates of consciousness when demands on integration increase. We used fMRI and "informational masking" to isolate the neural correlates of consciousness and measured how the associated brain activity changed as a function of required integration. Integration was manipulated by comparing the experience of hearing simple reoccurring tones to hearing harmonic tone triplets. The neural correlates of auditory consciousness included superior temporal gyrus, lateral and medial frontal regions, cerebellum, and also parietal cortex. Critically, only activity in left parietal cortex increased significantly as a function of increasing demands on integration. We conclude that integration can explain part of the neural activity associated with the generation conscious experiences, but that much of associated brain activity apparently reflects other processes.
整合通常被视为产生意识体验的关键过程。因此，当对整合的需求增加时，意识的神经关联区域内的活动应该会增强。我们使用功能磁共振成像（fMRI）和“信息掩蔽”来分离意识的神经关联，并测量相关脑活动如何随所需整合的变化而改变。通过比较听到简单重复音调与听到和声三音组的体验来操纵整合。听觉意识的神经关联包括颞上回、额叶外侧和内侧区域、小脑以及顶叶皮层。至关重要的是，只有左顶叶皮层的活动随着对整合需求的增加而显著增加。我们得出结论，整合可以解释与产生意识体验相关的部分神经活动，但许多相关的脑活动显然反映了其他过程。
