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While the hyper- and hypo- reward or punishment sensitivities (RS, PS) have received considerable attention as prominent transdiagnostic features of psychopathology, the lack of an overarching neurobiological characterization currently limits their early identification and neuromodulation. Here we combined microarray data from the Allen Human Brain Atlas with a multimodal fMRI approach to uncover the neurobiological signatures of RS and PS in a discovery-replication design (N=655 healthy participants, 442 Females). Both RS and PS were mapped separately in the brain, with the functional connectome in the fronto-striatal network encoding reward responsiveness, while the fronto-insular system was particularly engaged in punishment sensitivity.
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What makes human brains distinctive? The answer is hidden at least partially in the myriad synaptic connections made between neurons - the connectome. The foveal retina is a primate specialization which presents a feasible site for deriving a complete connectome of a human CNS structure. In the fovea, cells and circuits are miniaturized and compressed to densely sample the visual image at highest resolution and initiate form, color and motion perception.
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Background: Protein expression asymmetry between brain hemispheres is hypothesized to influence functional connectivity, yet its role in language-related networks remains poorly understood. Additionally, how such molecular differences relate to brain reorganization in glioma requires further exploration.
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