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In 19 people probabilistic DTI tractography was used to visualize the topographic relationships between three white matter components of a fascicle, the supraventricular temporal bundle, that traverses above the temporal horn of the lateral ventricle: collothalamic auditory and visual projections to the amygdala via the posterior thalamus, and the amygdalofugal stria terminalis. This bundle constitutes a subcortical, 'low road' pathway that transmits threat signals to the amygdala, and that projects signals that bias orienting toward visual threat to the bed nucleus of the stria terminalis. The course of the visual streamline passes below the brachium of the superior colliculus through the position two thalamic nuclei that have been shown to both receive afferents from the superficial layers of the superior colliculus and to also project to the amygdala: the suprageniculate nucleus and the inferior pulvinar.
View Article and Find Full Text PDFSpecialization for different memory dimensions in brain activity evoked by cued recollection.
Neuroimage
January 2025
Department of Neuroscience, Imaging and Clinical Sciences, University G. d'Annunzio of Chieti-Pescara, Via dei Vestini 31, 66100, Chieti, Italy; ITAB Institute for Advanced Biomedical Technologies, University G. d'Annunzio of Chieti-Pescara, Via dei Vestini 31, 66100, Chieti, Italy. Electronic address:
Cued recollection involves the retrieval of different features of the encoded event. Previous research has shown that the recollection of complex events jointly recruits the Default Mode and the Frontoparietal Control networks, but the degree to which activity within these networks varies as a function of the particular memory dimension (e.g.
View Article and Find Full Text PDFPost-stroke aphasia is a network disorder characterized by language impairments and aberrant network activation. While patients with post-stroke aphasia recover over time, the dynamics of the underlying changes in the brain remain elusive. Neuroimaging work demonstrated that language recovery is a heterogeneous process, characterized by varying activation levels in several regions of the left-hemispheric language network and the domain-general bilateral multiple-demand network.
View Article and Find Full Text PDFPharmacokinetics of 7,8-dihydroxyflavone in neonatal mice with hypoxia-ischemia related brain injury.
Front Pharmacol
January 2025
Waisman Center, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, United States.
Introduction: 7,8-Dihydroxyflavone (7,8-DHF) is a promising translational therapy in several brain injury models, including the neonatal hypoxia-ischemia (HI) model in mice. However, the neuroprotective effect of 7,8-DHF was only observed in female, but not male, neonatal mice with HI brain injury. It is unknown whether HI-induced physiological changes affect brain distribution of 7,8-DHF differently for male versus female mice.
View Article and Find Full Text PDFExploring imitation of within hand prehensile object manipulation using fMRI and graph theory analysis.
Sci Rep
January 2025
Support Centre for Advanced Neuroimaging (SCAN), Institute for Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.
This study aims to establish an imitation task of multi-finger haptics in the context of regular grasping and regrasping processes during activities of daily living. A video guided the 26 healthy, right-handed volunteers through the three phases of the task: (1) fixation of a hand holding a cuboid, (2) observation of the sensori-motor manipulation, (3) imitation of that motor action. fMRI recorded the task; graph analysis of the acquisitions revealed the associated functional cerebral connectivity patterns.
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