J 2025

Modulation of cerebellar-cortical connectivity induced by modafinil and its relationship with receptor and transporter expression

PIZZI, Stefano Delli, Federica TOMAIUOLO, Antonio FERRETTI, Giovanna BUBBICO, Valeria ONOFRJ et. al.

Basic information

Original name

Modulation of cerebellar-cortical connectivity induced by modafinil and its relationship with receptor and transporter expression

Authors

PIZZI, Stefano Delli, Federica TOMAIUOLO, Antonio FERRETTI, Giovanna BUBBICO, Valeria ONOFRJ, Stefania Della PENNA, Carlo SESTIERI and Stefano L SENSI

Edition

Biological Psychiatry: Cognitive Neuroscience and Neuroimaging, AMSTERDAM, ELSEVIER, 2025, 2451-9022

Other information

Language

English

Type of outcome

Article in a journal

Country of publisher

Netherlands

Confidentiality degree

is not subject to a state or trade secret

References:

Impact factor

Impact factor: 5.700 in 2023

Organization unit

Faculty of Medicine

DOI

UT WoS

999

Keywords in English

Modafinil; cerebellum; fMRI; receptors; crus; vermis

Tags

Tags

International impact, Reviewed
Changed: 14/2/2025 10:07, Mgr. Tereza Miškechová

Abstract

V originále

Background Modafinil is primarily employed to treat narcolepsy but also as an off-label cognitive enhancer. Functional Magnetic Resonance Imaging (fMRI) studies indicate that modafinil modulates the connectivity of neocortical networks primarily involved in attention and executive functions. However, much less is known about the drug's effects on subcortical structures. Following preliminary findings, we evaluated modafinil’s activity on the connectivity of distinct cerebellar regions with the neocortex. We assessed the spatial relationship of these effects with the expression of neurotransmitter receptors/transporters. Methods Patterns of resting-state fMRI (rs-fMRI) connectivity were estimated in 50 participants from scans acquired pre- and post-administration of a single (100 mg) dose of modafinil (n=25) or placebo (n=25). Using specific cerebellar regions as seeds for voxel-wise analyses, we examined modafinil’s modulation on cerebellar-neocortical connectivity. Next, we conducted a quantitative evaluation of the spatial overlap between the modulation of cerebellar-neocortical connectivity and the expression of neurotransmitter receptors/transporters obtained by publicly available databases. Results Modafinil increased the connectivity of Crus I and Vermis IX with prefrontal regions. Crus I connectivity changes were associated with the expression of dopaminergic D2 receptors. The Vermis I-II showed enhanced coupling with the dorsal anterior cingulate cortex and matched the expression of histaminergic H3 receptors. The Vermis VII-VIII displayed increased connectivity with the visual cortex, an activity associated with dopaminergic and histaminergic neurotransmission. Conclusion Our study reveals modafinil's modulatory effects on cerebellar-neocortical connectivity. The modulation mainly involves Crus I and the Vermis and spatially overlaps the distribution of dopaminergic and histaminergic receptors and serotonin transporters.