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Published in: Neurological Sciences 1/2023

17-09-2022 | Migraine | Original Article

Functional connectivity alterations in migraineurs with Alice in Wonderland syndrome

Authors: Claudia Piervincenzi, Nikolaos Petsas, Alessandro Viganò, Valentina Mancini, Giulio Mastria, Marta Puma, Costanza Giannì, Vittorio Di Piero, Patrizia Pantano

Published in: Neurological Sciences | Issue 1/2023

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Abstract

Background and purpose

Alice in Wonderland syndrome (AIWS) is a neurological disorder characterized by erroneous perception of the body schema or surrounding space. Migraine is the primary cause of AIWS in adults. The pathophysiology of AIWS is largely unknown, especially regarding functional abnormalities. In this study, we compared resting-state functional connectivity (FC) of migraine patients experiencing AIWS, migraine patients with typical aura (MA) and healthy controls (HCs).

Methods

Twelve AIWS, 12 MA, and 24 HCs were enrolled and underwent 3 T MRI scanning. Independent component analysis was used to identify RSNs thought to be relevant for AIWS: visual, salience, basal ganglia, default mode, and executive control networks. Dual regression technique was used to detect between-group differences in RSNs. Finally, AIWS-specific FC alterations were correlated with clinical measures.

Results

With respect to HCs, AIWS and MA patients both showed significantly lower (p < 0.05, FDR corrected) FC in lateral and medial visual networks and higher FC in salience and default mode networks. AIWS patients alone showed higher FC in basal ganglia and executive control networks than HCs. When directly compared, AIWS patients showed lower FC in visual networks and higher FC in all other investigated RSNs than MA patients. Lastly, AIWS-specific FC alterations in the executive control network positively correlated with migraine frequency.

Conclusions

AIWS and MA patients showed similar FC alterations in several RSNs, although to a different extent, suggesting common pathophysiological underpinnings. However, AIWS patients showed additional FC alterations, likely due to the complexity of AIWS symptoms involving high-order associative cortical areas.
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Metadata
Title
Functional connectivity alterations in migraineurs with Alice in Wonderland syndrome
Authors
Claudia Piervincenzi
Nikolaos Petsas
Alessandro Viganò
Valentina Mancini
Giulio Mastria
Marta Puma
Costanza Giannì
Vittorio Di Piero
Patrizia Pantano
Publication date
17-09-2022
Publisher
Springer International Publishing
Keywords
Migraine
Aura
Published in
Neurological Sciences / Issue 1/2023
Print ISSN: 1590-1874
Electronic ISSN: 1590-3478
DOI
https://doi.org/10.1007/s10072-022-06404-1

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