How vagal-nerve stimulation might reduce inflammation

Brain

Vagus nerve

Electrical device stimulates

vagus nerve

Stimulated vagus nerve

stimulates splenic nerve

Spleen

Increased release of

neurotransmitter

noradrenaline

Immune T-cell

Increased release of

neurotransmitter

acetylcholine

Macrophage

Reduced release of

pro-inflammatory protein

Brain

Vagus nerve

Electrical device stimulates

vagus nerve

Stimulated vagus nerve

stimulates splenic nerve

Spleen

Increased release of

neurotransmitter

noradrenaline

Immune T-cell

Increased release of

neurotransmitter

acetylcholine

Macrophage

Reduced release of

pro-inflammatory protein