The connectional anatomy of the temporal lobe

Catani, Marco

doi:10.1016/b978-0-12-823493-8.00001-8

Cited by 15 publications

(7 citation statements)

References 60 publications

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“…(Pascual 2015) It is suggested that the augmented connectivity of the human temporal lobe with the parietal lobe may be associated with the high-order functions that are unique in humans. (Catani 2022) TP subregions of non-human primates have distinct anatomical connections with regions of the temporal lobe, prefrontal cortex, and insula (Table 1) (Borra et al, 2010;Nakamura & Kubota, 1996) Conversely, posterior parietal regions of non-human primates are mostly connected to primary somatosensory and motor cortices, cingulate cortex and areas of the occipital lobe (Gamberini et al, 2020).(Fig. 8) As such, more focused studies are needed to investigate whether the association tract connecting the area POS2 with regions of the TP is a ber tract unique in humans.…”

Section: Discussionmentioning

confidence: 99%

Structural evidence for direct connectivity between the human precuneus and temporal pole via the fifth subcomponent of the Cingulum.

Skandalakis

Komaitis

Neromyliotis

et al. 2023

Preprint

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Neuro-imaging studies demonstrate simultaneous activation of the human precuneus and temporal pole, both in resting-state conditions and during a diverse array of higher-order functions. Despite remarkable advances in neuroscience research, the precise underlying structural connectivity remains unclear. Here, we investigate the connectivity of the precuneus and temporal pole through fiber micro-dissections in human hemispheres. We show the direct axonal connectivity between the posterior precuneus area POS2 and the areas 35 and TI of the temporal pole via the fifth subcomponent of the cingulum. This finding enhances the neuroanatomical knowledge regarding the connectivity of the posteromedial cortices, facilitates the detailed anatomo-functional integration in normal and pathological brain function, and suggests an axonal connectivity unique within the human brain supporting the differences in neural networks between species.

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Section: Discussionmentioning

confidence: 99%

Structural evidence for direct connectivity between the human precuneus and temporal pole via the fifth subcomponent of the Cingulum.

Skandalakis

Komaitis

Neromyliotis

et al. 2023

Preprint

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“…]. It encompasses various lobes, among which the frontal lobe holds particular significance, playing a pivotal role in numerous higher cognitive functions such as decision-making, problem-solving, and social behavior [4,5,6,7]. Nestled within the ventral aspect of the frontal lobe resides the orbitofrontal cortex (OFC), a specialized sector of the prefrontal cortex [4,8].…”

Section: Introductionmentioning

confidence: 99%

Development and Optimization of a NovelPassive Shim System for Human OrbitofrontalCortex Imaging at 4T MRI

Jayatilake,

Vijithananda,

Lee

2024

Preprint

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Background: The orbitofrontal cortex (OFC) area plays a critical role in humanbrain functions. However, susceptibility differences between paranasal sinuses andnasal cavity tissues often cause local field variations in the OFC region duringMRI, resulting in image distortions and signal loss. This paper introduces asubject-friendly neck passive shim solution aimed at enhancing field homogeneityin the brain, specifically in the OFC region. Methods: Utilizing 3D gradient-echo pulse sequences, main magnetic field (B0)maps of four subjects’ brains were acquired at 4T MRI. Subsequently, these mapswere decomposed into spherical harmonic coefficients which were then averaged.Optimal positions for placing shim elements on a semi-cylindrical surface, whichwas positioned slightly above the neck and below the chin, were computed. Results: The findings indicate a substantial enhancement in B0 homogeneity, particularly within the OFC region, through the integration of thissemi-cylindrical passive shim system in conjunction with the first andsecond-order active shimming. Conclusion: Utilizing a local dipole passive shim field shows potential forimproving field homogeneity in the orbitofrontal region of human brain.

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“…The uncinate fasciculus (UF) is a long-range WM association tract of the brain, connecting the medial orbitofrontal cortex with the anterior temporal lobes ( Gilchrist and Thompson, 2021 ). The UF is essential for several processes such as episodic memory, language, visual associative learning, and social and emotional functioning ( Von Der Heide et al, 2013 ; Olson et al, 2015 ; Ben-Soussan et al, 2020 ; Catani, 2022 ; Semenza, 2022 ). In a large-scale meta-analytic study of four separate psychiatric conditions, reductions in fractional anisotropy (FA) of the UF tract were found to be specific to people with SCZ ( Koshiyama et al, 2020 ).…”

Section: Introductionmentioning

confidence: 99%

Uncinate fasciculus microstructural organisation and emotion recognition in schizophrenia: controlling for hit rate bias

Stevens,

Ní Mhurchú,

Corley

et al. 2024

Front. Behav. Neurosci.

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IntroductionSchizophrenia (SCZ) is a complex neurodevelopmental disorder characterised by functional and structural brain dysconnectivity and disturbances in perception, cognition, emotion, and social functioning. In the present study, we investigated whether the microstructural organisation of the uncinate fasciculus (UF) was associated with emotion recognition (ER) performance. Additionally, we investigated the usefulness of an unbiased hit rate (UHR) score to control for response biases (i.e., participant guessing) during an emotion recognition task (ERT).MethodsFifty-eight individuals diagnosed with SCZ were included. The CANTAB ERT was used to measure social cognition. Specific ROI manual tract segmentation was completed using ExploreDTI and followed the protocol previously outlined by Coad et al. (2020).ResultsWe found that the microstructural organisation of the UF was significantly correlated with physical neglect and ER outcomes. Furthermore, we found that the UHR score was more sensitive to ERT subscale emotion items than the standard HR score. Finally, given the association between childhood trauma (in particular childhood neglect) and social cognition in SCZ, a mediation analysis found evidence that microstructural alterations of the UF mediated an association between childhood trauma and social cognitive performance.DiscussionThe mediating role of microstructural alterations in the UF on the association between childhood trauma and social cognitive performance suggests that early life adversity impacts both brain development and social cognitive outcomes for people with SCZ. Limitations of the present study include the restricted ability of the tensor model to correctly assess multi-directionality at regions where fibre populations intersect.

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The connectional anatomy of the temporal lobe

Cited by 15 publications

References 60 publications

Structural evidence for direct connectivity between the human precuneus and temporal pole via the fifth subcomponent of the Cingulum.

Structural evidence for direct connectivity between the human precuneus and temporal pole via the fifth subcomponent of the Cingulum.

Development and Optimization of a NovelPassive Shim System for Human OrbitofrontalCortex Imaging at 4T MRI

Uncinate fasciculus microstructural organisation and emotion recognition in schizophrenia: controlling for hit rate bias

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