The NHS is trialling an electric headset which aims to reduce symptoms of depression.
The device uses electric pulses to increase brain activity, and medical trials suggest the equipment could work well.
It is now being tested on NHS patients, but anyone hoping to purchase one privately could have to pay up to £399.
Swedish company Flow Neuroscience created the device. It said the headset stimulates certain areas of the brain that are not as active in depressed people, and the electric currents are gentle and “non-invasive”.