How stimulation of the vagus nerve can restore consciousness

Thalamus

2

Solitary

nucleus

1

Vagus nerve

Electrical device

The vagus nerve was stimulated by a device implanted in the patient’s chest. After a month of treatment the patient's attention, movements and brain activity significantly improved. Two key areas involved:

 

1

Solitary nucleus contains specialised neurons that produce the ‘fight or flight’ hormone noradrenaline that is linked to alertness

 

2

This region then connects to the thalamus, the brain region that regulates sleep, alertness and consciousness

Thalamus

2

Solitary

nucleus

1

Vagus nerve

Electrical device

The vagus nerve was stimulated by a device implanted in the patient’s chest. After a month of treatment the patient's attention, movements and brain activity significantly improved. Two key areas involved:

 

1

Solitary nucleus contains specialised neurons that produce the ‘fight or flight’ hormone noradrenaline that is linked to alertness

 

2

This region then connects to the thalamus, the brain region that regulates sleep, alertness and consciousness