Motor markers of congenital cerebellar hypoplasia.

IF 2 3区 心理学 Q3 BEHAVIORAL SCIENCES Neuropsychologia Pub Date : 2025-03-11 DOI:10.1016/j.neuropsychologia.2025.109121
Elisa Straulino, Maria Devita, Luisa Sartori, Adele Ravelli, Marina De Rui, Matteo Bendini, Lorenzo Pini, Andrea Spoto, Sonia Betti, Erika Marinuzzi, Daniela Mapelli, Umberto Castiello, Chiara Begliomini
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引用次数: 0

Abstract

The Reach-to-Grasp (RtG) movement is a fundamental feature of human competence and a widely adopted model for the study of functional movements in both healthy and disease-affected individuals. In particular, 3-D kinematic analysis of RtG allows the study of fine hand movements and submovements, described as secondary fluctuations of the main movement. The aim of this study was to use a RtG movement to test upper limb motor performance in a patient with ataxic syndrome due to cerebellar hypoplasia. 3-D kinematical recording and MRI-based structural measures were combined to provide a comprehensive characterization of the movement and its neural underpinnings at the baseline and after a 2 years follow-up. In terms of kinematics, a dissociation between reaching and grasping performance was observed over time: while grasping appeared to be characterized by an improvement at the 2 years follow-up, reaching showed a significant increase of jerk submovements, suggesting a loss of functionality in feedback mechanisms allowing for smoothness of the movement. At the neural level, an increase of gray matter volume of the anterior right cerebellar hemisphere, alongside with an increased structural connectivity within the sensorimotor network were observed at the 2 years follow up, presumably mirroring the improvement observed for the grasping component. These results highlight the potential of the jerk submovements as a motor biomarker in contexts where feedback mechanisms may be compromised, such as in the case of cerebellar dysfunctions, contributing to the development of new methods for the motor assessment of patients in clinical settings.

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来源期刊
Neuropsychologia
Neuropsychologia 医学-行为科学
CiteScore
5.10
自引率
3.80%
发文量
228
审稿时长
4 months
期刊介绍: Neuropsychologia is an international interdisciplinary journal devoted to experimental and theoretical contributions that advance understanding of human cognition and behavior from a neuroscience perspective. The journal will consider for publication studies that link brain function with cognitive processes, including attention and awareness, action and motor control, executive functions and cognitive control, memory, language, and emotion and social cognition.
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