The morphology of supragranular pyramidal neurons in the human insular cortex: a quantitative Golgi study

Cerebral Cortex
Kaeley AndersonBob Jacobs

Abstract

Although the primate insular cortex has been studied extensively, a comprehensive investigation of its neuronal morphology has yet to be completed. To that end, neurons from 20 human subjects (10 males and 10 females; N = 600) were selected from the secondary gyrus brevis, precentral gyrus, and postcentral gyrus of the left insula. The secondary gyrus brevis was generally more complex in terms of dendritic/spine extent than either the precentral or postcentral insular gyri, which is consistent with the posterior-anterior gradient of dendritic complexity observed in other cortical regions. The male insula had longer, spinier dendrites than the female insula, potentially reflecting sex differences in interoception. In comparing the current insular data with regional dendritic data quantified from other Brodmann's areas (BAs), insular total dendritic length (TDL) was less than the TDL of high integration cortices (BA6beta, 10, 11, 39), but greater than the TDL of low integration cortices (BA3-1-2, 4, 22, 44). Insular dendritic spine number was significantly greater than both low and high integration regions. Overall, the insula had spinier, but shorter neurons than did high integration cortices, and thus may represent a specialize...Continue Reading

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Citations

Nov 17, 2010·Brain Structure & Function·Bob JacobsPaul R Manger
Mar 8, 2013·Journal of Human Evolution·Amy L BauernfeindChet C Sherwood
Feb 22, 2012·Autonomic Neuroscience : Basic & Clinical·Paul M MaceyRonald M Harper
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Aug 30, 2018·The Journal of Comparative Neurology·Carlos Escobar VásquezAlberto A Rasia-Filho
Feb 8, 2019·The Anatomical Record : Advances in Integrative Anatomy and Evolutionary Biology·Andrea PironeAlberto Granato
Nov 1, 2017·The Journal of Comparative Neurology·Bob JacobsPaul R Manger
Nov 22, 2019·The Journal of Comparative Neurology·Vivian T NguyenBob Jacobs
Jan 30, 2020·Journal of Neurophysiology·Kevin LeeJohanna M Montgomery
Apr 15, 2020·ELife·Alexander Shakeel BatesGregory Sxe Jefferis
Dec 20, 2018·Frontiers in Neuroanatomy·Zachary Logan HolleyGeorge S Vidal
Sep 2, 2020·The Journal of Comparative Neurology·Allysa WarlingBob Jacobs

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