Changes in cerebro-cerebellar interaction during response inhibition after performance improvement

Area of Science:

• Neuroscience
• Cognitive Neuroscience
• Motor Control

Background:

• Motor learning and response inhibition are supported by the cerebellum and cerebro-cerebellar interactions.
• Response inhibition involves complex motor control and higher-order cognitive processes.

Purpose of the Study:

• To investigate cerebro-cerebellar interactions during response inhibition.
• To examine how these interactions change with performance improvement.

Main Methods:

• Functional magnetic resonance imaging (fMRI) was used to measure brain activity.
• Psycho-physiological interaction (PPI) analysis was employed to assess cerebro-cerebellar connectivity.
• Participants performed a response inhibition task over two separate days.

Main Results:

• Behavioral performance improved from day 1 to day 2.
• A decrease in interaction from the right inferior frontal cortex (rIFC) to the cerebellum (lobule VII or VI) was observed.
• An increase in interaction from the cerebellum to the primary motor area was detected.

Conclusions:

• The cerebellum plays a crucial role in response inhibition.
• Changes in cerebro-cerebellar connectivity likely underlie performance improvements in response inhibition tasks.