Strong resemblance in the amplitude of oscillatory brain activity in monozygotic twins is not caused by "trivial" similarities in the composition of the skull

Dennis van 't Ent, Inge L.C. van Soelen, Cornelis J. Stam, Eco J.C. De Geus, Dorret I. Boomsma
2009 Human Brain Mapping  
Previous twin studies have shown strong heritability of electroencephalogram amplitude characteristics, such as power spectra. However, it has been suggested that these high heritabilities may reflect "trivial" twin resemblance in intervening tissues such as the skull. Here we demonstrate strong monozygotic twin correlation (0.79 < r < 0.88) of eyes-closed resting-state magnetoencephalogram power, which is insensitive to intervening tissues. These results confirm that brain activity itself is
more » ... ghly heritable. Hum Brain Mapp 30: [2142][2143][2144][2145] 2009. V V C 2008 Wiley-Liss, Inc.
doi:10.1002/hbm.20656 pmid:18819108 fatcat:iq2mkeom6jenlg4mbmlshk25by