Prefronto-cerebellar neuromodulation affects appetite in obesity

Area of Science:

• Neuroscience
• Obesity Research
• Cognitive Science

Background:

• Human neuroimaging links cerebellar changes to obesity.
• The cerebellum's role in higher cognition via prefrontal cortex connections is emerging.
• The direct link between cerebellar function and appetite in obesity remains understudied.

Purpose of the Study:

• To explore appetite changes in obesity using prefronto-cerebellar neuromodulation.
• To investigate the impact of transcranial direct current stimulation (tDCS) on appetite and cognitive function in obesity.

Main Methods:

• A randomized, single-blinded, sham-controlled, crossover study.
• 12 participants with class I obesity received active or sham tDCS targeting prefrontal cortex and cerebellum.
• Evaluated changes in appetite and working memory performance.

Main Results:

• Active tDCS increased hunger and desire to eat after food cue exposure.
• Participants showed a trend towards more errors in a working memory task.
• No changes in basic motor performance were observed.

Conclusions:

• Prefronto-cerebellar neuromodulation can influence appetite in individuals with obesity.
• Findings suggest prefronto-cerebellar pathways are involved in obesity's behavioral aspects.
• This study is the first to demonstrate this neuromodulatory effect on appetite in obesity.