The paranasal sinuses: three-dimensional reconstruction, photo-realistic imaging, and virtual endoscopy

Kapakin, Samet

doi:10.5603/fm.a2016.0006

Cited by 26 publications

(37 citation statements)

References 41 publications

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“…Our data clearly show the need for closer attention to anatomical parcellation of the insular cortex–claustrum–lateral striatum region, both in animal studies and in examinations of human functional imaging and clinical pathology. The close apposition of the claustrum with insular cortex and the putamen in primates has been well described (Kapakin, ), but it bears repeating that it is possible to traverse the insular cortex, extreme capsule, dorsal claustrum, and lateral putamen along a linear path of only a few millimeters from the bank of the lateral sulcus, even in the human brain. Furthermore, and potentially even more problematic from the point of view of functional studies, is the commonality of blood supply and venous return among these structures.…”

Section: Discussionmentioning

confidence: 98%

“…Given the proximity between claustrum and insular cortex and the relatively low resolution of the noninvasive imaging methods that are directly applicable to the human brain, it is uncertain whether the claustrum, anterior insular cortex, or both of these structures originate inputs to salience network areas. The claustrum and insular cortex are not only closely apposed (Kapakin, ) but also share a common arterial blood supply (Marinkovic and Markovic, ; Ture et al, ; Delion and Mercier, ). The venous drainage of the claustrum is also shared with surrounding structures, including the internal, external, and extreme capsules; frontoparietal white matter; and striatum (Zhang et al, ), potentially confounding assignment of functional activity as measured by the BOLD signal (Boubela et al, ).…”

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confidence: 99%

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Topography of claustrum and insula projections to medial prefrontal and anterior cingulate cortices of the common marmoset (Callithrix jacchus)

Reser

Majka

Snell

et al. 2016

J of Comparative Neurology

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The claustrum has been the subject of intense research interest in recent years, driven in large part by its extensive connections with various regions of the cerebral cortex and by hypotheses surrounding its possible role in multimodal sensory and/or sensory-emotional integration. Here we employed neuroanatomical tracers to map projections from the claustrum-insular region to the medial prefrontal and anterior cingulate cortex of the common marmoset (Callithrx jacchus). These areas were selected based on their identification as "hub" areas of the default mode and cortical salience networks, respectively. Microinjections of fluorescent tracers, along with gold-nanoparticle-conjugated cholera toxin B-subunit and biotinylated dextran amine, were placed in subdivisions of the anterior cingulate area 24b/c and in medial prefrontal areas 32 and 32V. The resulting distribution of transported label showed rostral-caudal and dorsal-ventral topographic arrangement of claustrum connections and clear rostral-caudal topography of insular projections. Medial prefrontal connections were restricted mainly to a ventromedial strip located in the rostral half of the claustrum, with a second, smaller patch of cells in the caudal, ventrolateral portion. In contrast, injections into area 24 yielded dense, widespread connections from the dorsal claustrum, extending along its entire rostral-caudal length. Projections from the "classical" agranular, disgranular, and granular insular areas were sparse or nonexistent in areas 32 and 32V, with progressively increasing connections observed in more caudal tracer injections (i.e., in subdivisions of area 24). Transported label was observed in rostral peri-insular areas orbital periallocortex, orbital proisocortex, and insular proisocortex following all prefrontal injections. These data provide a structural connectivity foundation for interpretation of functional imaging studies, which often indicate activity in the "anterior insula" that may arise, in part, from claustrum and/or peri-insular projections to the anterior cingulate and medial prefrontal cortices. J. Comp. Neurol. 525:1421-1441, 2017. © 2016 Wiley Periodicals, Inc.

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Section: Discussionmentioning

confidence: 98%

mentioning

confidence: 99%

Topography of claustrum and insula projections to medial prefrontal and anterior cingulate cortices of the common marmoset (Callithrix jacchus)

Reser

Majka

Snell

et al. 2016

J of Comparative Neurology

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“…The claustrum is an irregular and fine sheet of grey matter in the basolateral telencephalon present in almost all mammals. The claustrum is separated from the insular cortex by the extreme capsule and medially from the lentiform nucleus by the external capsule (Edelstein and Denaro, 2004;Crick and Koch, 2005;Fernández-Miranda et al, 2008;Kapakin, 2011;Goll et al, 2015;Milardi et al, 2015). Figure 1 shows in an axial view the anatomical location of the human claustrum.…”

Section: Introductionmentioning

confidence: 99%

The functional connectivity of the human claustrum according to the Human Connectome Project database

Rodríguez-Vidal

Alcauter

Barrios

2019

Preprint

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The claustrum is an irregular and fine sheet of grey matter in the basolateral telencephalon present in almost all mammals. The claustrum has been the object of several studies using animal models and more recently in human beings using neuroimaging. It has been involved in cognition and disease such as fear recognition, suppression of natural urges, multisensory integration, conceptual integration, seizures, multiple sclerosis and Parkinsons disease. Nevertheless, the function of the claustrum still remains unclear. We present a high resolution functional connectivity study of the claustrum in order to identify its main networks. Resting state functional and anatomical MRI data from 40 healthy subjects were analyzed; taken from the Human Connectome Project (HCP, NIH Bleuprint: The Human Connectome Project), with 2x2x2 mm3 voxel resolution, equivalent to the high resolution tractography studies. Positive functional connectivity was found (p<0.05, FDR corrected) between the claustrum and the insula, anterior cingulate cortex, pre-central and postcentral gyrus, superior temporal gyrus and subcortical areas. Our findings coincide with the results previously reported in both animal models and studies with humans. Showing the claustrum as a profusely connected structure not only structurally but also functionally. Evidencing the claustrum as a node participating in a plethora neural networks.

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“…As illustrated in the Talairach and Tournoux [] human brain atlas, the claustrum extends 22 mm inferior‐to‐superior and 38 mm anterior‐to‐posterior. The right claustrum has an average volume of 828.83 mm 3 , while the left has a volume of 705.82 mm 3 and lies approximately 1 mm from the insular cortex and about 1 mm from the putamen [Kapakin, ]. Bilaterally, it displays asymmetry in shape and anisotropy between the hemispheres [Cao et al, ] (as shown schematically in Fig.…”

Section: Introductionmentioning

confidence: 99%

The DTI connectivity of the human claustrum

Torgerson

Irimia

Goh

et al. 2014

Human Brain Mapping

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145

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The origin, structure, and function of the claustrum, as well as its role in neural computation, have remained a mystery since its discovery in the 17th century. Assessing the in vivo connectivity of the claustrum may bring forth useful insights with relevance to models the overall functionality of the claustrum itself. Using structural and diffusion tensor neuroimaging in N=100 healthy subjects, we found that the claustrum has the highest connectivity in the brain by regional volume. Network theoretical analyses revealed that a) the claustrum is a primary contributor to global brain network architecture, and that b) significant connectivity dependencies exist between the claustrum, frontal lobe, and cingulate regions. These results illustrate that the claustrum is ideally located within the human CNS connectome to serve as the putative “gate keeper” of neural information for consciousness awareness. Our findings support and underscore prior theoretical contributions about the involvement of the claustrum in higher cognitive function and its relevance in devastating neurological disease.

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The paranasal sinuses: three-dimensional reconstruction, photo-realistic imaging, and virtual endoscopy

Abstract: Background:The purpose of the study was to create computer-aided design models of the paranasal sinuses (frontal, maxillary, and sphenoid) (Folia Morphol 2016; 75, 3: 326-333)

Cited by 26 publications

References 41 publications

Topography of claustrum and insula projections to medial prefrontal and anterior cingulate cortices of the common marmoset (Callithrix jacchus)

Topography of claustrum and insula projections to medial prefrontal and anterior cingulate cortices of the common marmoset (Callithrix jacchus)

The functional connectivity of the human claustrum according to the Human Connectome Project database

The DTI connectivity of the human claustrum

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