The Somatotopic Organization Within the Rabbit's Thalamic Reticular Nucleus - PubMed (original) (raw)
The Somatotopic Organization Within the Rabbit's Thalamic Reticular Nucleus
John W. Crabtree. Eur J Neurosci. 1992.
Abstract
The organization of the somatosensory representation within the rabbit's thalamic reticular nucleus (TRN) was studied. Focal injections of horseradish peroxidase (HRP), wheatgerm agglutinin conjugated to HRP, or [3H]proline were made into somatosensory cortical area 1 (S1). The resultant labelling in the thalamus was analysed. Single injections into S1 result in single zones of terminal labelling in TRN that are restricted to the centroventral part of the sheet-like nucleus. In reconstructions from horizontal sections these zones of labelling resemble 'slabs', which lie in the plane of the nucleus parallel to its borders, occupy only a fraction of the thickness of the reticular sheet, and are elongated in the dorsoventral and oblique rostrocaudal dimensions. Thus, the slabs of S1 terminals, which represent various loci of the body surface, and the main distribution of the reticular dendrites have a similar orientation. In comparisons of the zones of labelling following single or double injections at different cortical sites in S1, an inner (medial) to outer (lateral) shift in labelling in the ventrobasal complex (VB) is accompanied by an inner (medial) to outer (lateral) shift in labelling along the thickness of the reticular sheet; a rostral to caudal shift in labelling in VB is accompanied by a rostral to caudal shift in labelling along the plane of the reticular sheet. Thus, like VB, the reticular nucleus receives a topographically accurate projection from S1. Further, the somatotopic map conveyed from S1 to TRN lies perpendicular to the plane of the nucleus and repeats the spatial organization of the map in VB. These findings, together with those for the visual sector of the rabbit's TRN, indicate that the representation of the cortical sheet is broken up into significant parcels at the inner and outer borders of the reticular sheet.
Similar articles
- The Somatotopic Organization Within the Cat's Thalamic Reticular Nucleus.
Crabtree JW. Crabtree JW. Eur J Neurosci. 1992;4(12):1352-1361. doi: 10.1111/j.1460-9568.1992.tb00160.x. Eur J Neurosci. 1992. PMID: 12106398 - The Topographic Organization and Axis of Projection within the Visual Sector of the Rabbit's Thalamic Reticular Nucleus.
Crabtree JW, Killackey HP. Crabtree JW, et al. Eur J Neurosci. 1989 Jan;1(1):94-109. doi: 10.1111/j.1460-9568.1989.tb00777.x. Eur J Neurosci. 1989. PMID: 12106177 - Organization in the somatosensory sector of the cat's thalamic reticular nucleus.
Crabtree JW. Crabtree JW. J Comp Neurol. 1996 Mar 4;366(2):207-22. doi: 10.1002/(SICI)1096-9861(19960304)366:2<207::AID-CNE2>3.0.CO;2-9. J Comp Neurol. 1996. PMID: 8698882 - Organization in the auditory sector of the cat's thalamic reticular nucleus.
Crabtree JW. Crabtree JW. J Comp Neurol. 1998 Jan 12;390(2):167-82. J Comp Neurol. 1998. PMID: 9453662 - Organization of cortical afferents to the rostral, limbic sector of the rat thalamic reticular nucleus.
Lozsádi DA. Lozsádi DA. J Comp Neurol. 1994 Mar 22;341(4):520-33. doi: 10.1002/cne.903410408. J Comp Neurol. 1994. PMID: 7515402
Cited by
- Functional Diversity of Thalamic Reticular Subnetworks.
Crabtree JW. Crabtree JW. Front Syst Neurosci. 2018 Oct 18;12:41. doi: 10.3389/fnsys.2018.00041. eCollection 2018. Front Syst Neurosci. 2018. PMID: 30405364 Free PMC article. - Postnatal development of cholinergic input to the thalamic reticular nucleus of the mouse.
Sokhadze G, Campbell PW, Guido W. Sokhadze G, et al. Eur J Neurosci. 2019 Apr;49(8):978-989. doi: 10.1111/ejn.13942. Epub 2018 Jul 21. Eur J Neurosci. 2019. PMID: 29761601 Free PMC article. - Two functionally distinct networks of gap junction-coupled inhibitory neurons in the thalamic reticular nucleus.
Lee SC, Patrick SL, Richardson KA, Connors BW. Lee SC, et al. J Neurosci. 2014 Sep 24;34(39):13170-82. doi: 10.1523/JNEUROSCI.0562-14.2014. J Neurosci. 2014. PMID: 25253862 Free PMC article. - Dual chemoarchitectonic lamination of the visual sector of the thalamic reticular nucleus.
Baldauf ZB. Baldauf ZB. Neuroscience. 2010 Feb 3;165(3):801-18. doi: 10.1016/j.neuroscience.2009.11.010. Epub 2009 Nov 10. Neuroscience. 2010. PMID: 19909790 Free PMC article. - Circuits formultisensory integration and attentional modulation through the prefrontal cortex and the thalamic reticular nucleus in primates.
Zikopoulos B, Barbas H. Zikopoulos B, et al. Rev Neurosci. 2007;18(6):417-38. doi: 10.1515/revneuro.2007.18.6.417. Rev Neurosci. 2007. PMID: 18330211 Free PMC article. Review.
LinkOut - more resources
Full Text Sources