Research note: a resting-state, cerebello-amygdaloid intrinsically connected network
1Service de NeuroImagerie, CHNO des, 15-20 Paris, France.
Cerebellum & Ataxias
|February 23, 2018
Summary
Researchers identified a novel brain network connecting the cerebellum and amygdala during rest. This cerebello-amygdaloid network may integrate sensory, emotional, and motivational information.
Area of Science:
- Neuroimaging
- Functional Connectivity
- Brain Networks
Background:
- Resting-state functional connectivity studies reveal coherence between the cerebellum and cerebral amygdala.
- Abnormal activation in these areas is linked to neuropsychiatric symptoms.
Purpose of the Study:
- To identify a resting-state intrinsically connected cerebello-amygdaloid network.
Main Methods:
- Independent Component Analysis (ICA) applied to resting-state functional MRI data.
- Analysis performed on 15 healthy volunteers.
Main Results:
- The primary ICA component revealed a network including cerebellar regions (dentate nuclei, lobules VI and VIII) and amygdala (basolateral).
- Other connected structures included the substantia nigra, posterior insula, claustrum, and parietal operculum.
Conclusions:
- A novel intrinsically connected network linking the cerebellum and amygdala is described.
- This network may be crucial for integrating somatosensory, emotional, and motivational information.
- It may precede the recruitment of specialized circuits like the ventral striatum or attentional networks.
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