http://www.nitrc.org/forum/forum.php?forum_id=8530 <table border="0" width="100%"><tr><td align="left"/></tr></table> <p><b>Invariant and heritable local cortical organization as revealed by fMRI.</b></p> <p>J Neurophysiol. 2018 Apr 25;:</p> <p>Authors: Christova P, Georgopoulos AP</p> <p>Abstract<br/> Neural interactions in local cortical networks critically depend on the distance between interacting elements: the shorter the distance, the stronger the interactions. Here we quantified these interactions in six cortical areas of 854 individuals, including monozygotic and dizygotic twins, non-twin siblings, and nonrelated individuals. We found that the strength of zero-lag correlation between prewhitened, resting-state, BOLD fMRI time series decreased with distance as a power law. The rate of decrease, b, varied among individuals by ~1.9x, was highly correlated between hemispheres but differed among areas (by ~1.2x) in a systematic fashion, becoming progressively less steep from frontal to occipital areas. With respect to twin status, b was significantly correlated between monozygotic twins, less so between dizygotic twins or non-twin siblings, and not at all in nonrelated individuals. These results quantify the lawful, distance-related cortical interactions and demonstrate, for the first time, the heritability of their power law.<br/> </p><p>PMID: 29694282 [PubMed - as supplied by publisher]</p> en-us Copyright 2000-2026 NITRC OSI Mon, 27 Apr 2026 20:41:10 GMT http://blogs.law.harvard.edu/tech/rss NITRC RSS generator