Cortical hierarchy governs rat claustrocortical circuit organization

The Journal of Comparative Neurology
Michael G WhiteBrian N Mathur

Abstract

The claustrum is a telencephalic gray matter structure with various proposed functions, including sensory integration and attentional allocation. Underlying these concepts is the reciprocal connectivity of the claustrum with most, if not all, areas of the cortex. What remains to be elucidated to inform functional hypotheses further is whether a pattern exists in the strength of connectivity between a given cortical area and the claustrum. To this end, we performed a series of retrograde neuronal tract tracer injections into rat cortical areas along the cortical processing hierarchy, from primary sensory and motor to frontal cortices. We observed that the number of claustrocortical projections increased as a function of processing hierarchy; claustrum neurons projecting to primary sensory cortices were scant and restricted in distribution across the claustrum, whereas neurons projecting to the cingulate cortex were densely packed and more evenly distributed throughout the claustrum. This connectivity pattern suggests that the claustrum may preferentially subserve executive functions orchestrated by the cingulate cortex. J. Comp. Neurol. 525:1347-1362, 2017. © 2016 Wiley Periodicals, Inc.

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Citations

Aug 20, 2016·Brain Structure & Function·Clémentine FillingerPierre Veinante
Apr 7, 2018·Brain Structure & Function·Michael G White, Brian N Mathur
Jun 13, 2018·The Journal of Comparative Neurology·Marie BarbierPierre-Yves Risold
Sep 27, 2018·The Journal of Comparative Neurology·Brian ZinggLi I Zhang
Mar 9, 2019·The Journal of Comparative Neurology·Sophie RiedemannTherese Riedemann
Feb 23, 2020·Annual Review of Neuroscience·Jesse JacksonAlbert K Lee
Oct 12, 2018·Journal of Molecular Histology·Dimka Hinova-PalovaAdrian Paloff
Mar 12, 2019·Frontiers in Neuroanatomy·Samuel R KrimmelDavid A Seminowicz
Feb 28, 2019·Frontiers in Neuroanatomy·Lalitha KuradaMohamad Z Koubeissi
Dec 17, 2019·Claustrum·Houman Qadir, Brian N Mathur
Dec 7, 2017·Brain Structure & Function·Clémentine FillingerPierre Veinante
Jun 20, 2019·Frontiers in Neuroanatomy·Christopher M DillinghamShane M O'Mara
Aug 16, 2018·Brain Structure & Function·Michael G White, Brian N Mathur
Apr 9, 2020·The Journal of Comparative Neurology·Hannah BruguierZoltán Molnár
Jun 28, 2019·Brain Structure & Function·Bradley M RobertsBrian N Mathur
Sep 26, 2020·The Journal of Comparative Neurology·Brian A MarriottJesse Jackson
May 6, 2019·Neuroscience and Biobehavioral Reviews·Travis P ToddDavid J Bucci

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