Executive actions are represented and hierarchically organized in the cortex of the frontal lobe. The representation and coordination of an action or series of actions have the same anatomical substrate: an executive neuronal network (cognit) in forntal cortex. That network interacts structurally and dynamically with perceptual networks of posterior cortex at the highest levels of the perception-action cycle.
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http://dx.doi.org/10.1016/j.ijpsycho.2006.07.014 | DOI Listing |
Brain Struct Funct
December 2024
Department of Psychological and Brain Sciences, Texas A&M University, College Station, Texas, USA.
Healthy aging is associated with deficits in cognitive performance and brain changes, including in the cerebellum. Cerebellar communication with the cortex via closed-loop circuits through the thalamus have been established and these circuits are closely related to the functional topography of the cerebellum. In this study, we sought to elucidate relationships between cerebellar structure and function with cognition in healthy aging.
View Article and Find Full Text PDFNeuroscience
January 2025
School of Communication Sciences & Disorders, University of Memphis, Memphis, TN, USA.
Commun Biol
November 2024
Neuroscience and Mental Health Institute, University of Alberta, Edmonton, AB, Canada.
This study delves into the claustrum's role in modulating spontaneous and sensory-evoked network activity across cortical regions. Using mesoscale calcium imaging and Gi and Gq DREADDs in anesthetized mice, we show that decreasing claustral activity enhances prefrontal cortical activity, while activation reduces prefrontal cortical activity. This claustrum modulation also caused changes to the brain's large-scale functional networks, emphasizing the claustrum's ability to influence long-range functional connectivity in the cortex.
View Article and Find Full Text PDFClin Geriatr Med
February 2025
Department of Anesthesiology, Dartmouth Hitchcock Medical Center, Lebanon, NH, USA.
Surg Neurol Int
October 2024
Hassan 2 University, Faculty of Medicine and Pharmacy, Casablanca, Morocco.
Background: Giant intracranial tuberculomas are rare space-occupying lesions in the brain parenchyma, with a diameter >2.5 cm. They can mimic gliomas, meningiomas, and metastases.
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