Research on the involvement of the cerebellum in social behavior and its relationship with social mentalizing has just begun. Social mentalizing is the ability to attribute mental states such as desires, intentions, and beliefs to others. This ability involves the use of social action sequences which are believed to be stored in the cerebellum. In order to better understand the neurobiology of social mentalizing, we applied cerebellar transcranial direct current stimulation (tDCS) on 23 healthy participants in the MRI scanner, immediately followed by measuring their brain activity during a task that required to generate the correct sequence of social actions involving false (i.e., outdated) and true beliefs, social routines and non-social (control) events. The results revealed that stimulation decreased task performance along with decreased brain activation in mentalizing areas, including the temporoparietal junction and the precuneus. This decrease was strongest for true belief sequences compared to the other sequences. These findings support the functional impact of the cerebellum on the mentalizing network and belief mentalizing, contributing to the understanding of the role of the cerebellum in social sequences.
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http://dx.doi.org/10.1016/j.ijchp.2023.100373 | DOI Listing |
Neurobiol Dis
January 2025
The University of Texas Southwestern Medical Center, Department of Neurology, Dallas, TX, United States of America; The University of Texas Southwestern Medical Center, Department of Psychiatry, Dallas, TX, United States of America; The University of Texas Southwestern Medical Center, Department of Pediatrics, Dallas, TX, United States of America; The University of Texas Southwestern Medical Center, Department of Neuroscience; O'Donnell Brain Institute, Dallas, TX, United States of America. Electronic address:
Loss of function in the subunits of the GTPase-activating protein (GAP) activity toward Rags-1 (GATOR1) complex, an amino-acid sensitive negative regulator of the mechanistic target of rapamycin complex 1 (mTORC1), is implicated in both genetic familial epilepsies and Neurodevelopmental Disorders (NDDs) (Baldassari et al., 2018). Previous studies have found seizure phenotypes and increased activity resulting from conditional deletion of GATOR1 function from forebrain excitatory neurons (Yuskaitis et al.
View Article and Find Full Text PDFJ Mol Histol
January 2025
Department of Histology, Faculty of Medicine, Assiut University, Assiut, Egypt.
J Neurosci
January 2025
Arizona State University, Department of Psychology, Tempe, AZ, 85287 USA.
The cerebellum, identified to be active during cognitive and social behavior, has multisynaptic connections through the cerebellar nuclei (CN) and thalamus to cortical regions, yet formation and modulation of these pathways are not fully understood. Perineuronal nets (PNNs) respond to changes in local cellular activity and emerge during development. PNNs are implicated in learning and neurodevelopmental disorders, but their role in the CN during development is unknown.
View Article and Find Full Text PDFNat Neurosci
January 2025
Department of Physiology, Seoul National University College of Medicine, Seoul, Korea.
The cerebellum is activated by noxious stimuli and pathological pain but its role in noxious information processing remains unknown. Here, we show that in mice, cutaneous noxious electrical stimuli induced noradrenaline (NA) release from locus coeruleus (LC) terminals in the cerebellar cortex. Bergmann glia (BG) accumulated these LC-NA signals by increasing intracellular calcium in an integrative manner ('flares').
View Article and Find Full Text PDFFront Behav Neurosci
December 2024
Department of Biology, Miami University, Oxford, OH, United States.
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