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Area of Science:

  • Neuroscience
  • Urology
  • Medical Imaging

Background:

  • The cerebellum's role in micturition (urinary function) is not fully understood.
  • Investigating brain activity during bladder filling is crucial for understanding urinary pathologies.

Purpose of the Study:

  • To explore the functional connectivity (FC) of the cerebellum during the storage phase of micturition.
  • To detect spontaneous blood-oxygen-level dependent signals between the cerebellum and other brain regions.
  • To utilize high-resolution 7 Tesla magnetic resonance imaging (MRI) for detailed analysis.

Main Methods:

  • Recruited healthy individuals without neurological or lower urinary tract (LUT) symptoms.
  • Acquired resting-state functional MRI (rs-fMRI) scans with both empty and full bladder states.
  • Performed seed-to-voxel analysis on cerebellar regions of interest using nonparametric statistics (Threshold Free Cluster Enhancement, p < 0.05).

Main Results:

  • Significant differences in cerebellar functional connectivity were observed between full and empty bladder states.
  • Specific cerebellar regions (left cerebellar tonsil, right posterolateral lobe, right posterior lobe) showed altered connectivity.
  • Sex differences in FC were noted, with higher connectivity in women during the empty bladder condition.

Conclusions:

  • Cerebellar network connectivity is modulated by bladder filling and associated with LUT function.
  • This study provides initial evidence for the cerebellum's involvement in bladder control.
  • Findings lay the groundwork for understanding urinary pathologies related to cerebellar function.