Autistic fluid intelligence: Increased reliance on visual functional connectivity with diminished modulation of coupling by task difficulty.

摘要: Different test types lead to different intelligence estimates in autism, as illustrated by the fact that autistic individuals obtain higher scores on Raven's Progressive Matrices (RSPM) than they do Wechsler IQ, contrast relatively similar performance both tests non-autistic individuals. However, cerebral processes underlying these differences are not well understood. This study investigated whether activity fluid “reasoning” network, which includes frontal, parietal, temporal and occipital regions, is differently modulated task complexity during RSPM. In this purpose, we used fMRI participants solving 60 RSPM problems focussing regions networks involved reasoning complexity. As increased, left superior gyrus middle increased for participants, whereas showed frontal bilateral precuneus. Using psychophysiological interaction analyses (PPI), then verified did functional connectivity increase a function of PPI revealed greater autistic, compared between inferior areas gyrus, right parietal lobe, gyrus. We also observed generally less modulation network participants. These results suggest individuals, when confronted with increasing complexity, rely mainly visuospatial more complex matrices. addition now well-established enhanced visual range tasks, reliance perception has central role cognition.