Neural correlates of conscious tactile perception: An analysis of BOLD activation patterns and graph metrics

Theories of human consciousness substantially vary in the proposed spatial extent brain activity associated with conscious perception as well assumed functional alterations within involved regions. Here, we investigate which local and global changes accompany somatosensory following electrical finger nerve stimulation, whether there are whole-brain network by means graph metrics. Thirty-eight healthy participants performed a detection task reported their decision confidence during fMRI. For tactile contrast to undetected near-threshold trials (misses), observed increased BOLD precuneus, intraparietal sulcus, insula, nucleus accumbens, inferior frontal gyrus contralateral secondary cortex. misses compared correct rejections, bilateral cortices, supplementary motor cortex insula showed greater activations. The analysis topology for hits, did not result any significant differences modularity, participation, clustering or path length, was supported Bayes factor statistics. In conclusion, perception, our results consistent an involvement (probably) domain-general areas (precuneus, gyrus) addition regions; data do support notion specific metrics experience. employed submodality fine current this speaks broadcasting sensory content across without substantial reconfiguration resulting integrative