stimulation

The team placed the cells in a specialized bioreactor that allowed them to apply controlled electrical stimulation and observe the biological effects.

For decades, the country forbade most forms of amusement, fun, cultural stimulation and even sports events that women could attend, much less participate in.

"We were delighted to see an instant improvement in her hand movements, and therefore her ability to play, once stimulation was delivered to the brain," he said.

However, Prof Ali believes we can potentially boost collagen output and maintain elasticity in our skin by using special techniques such as laser collagen stimulation and microneedling.

At other times, residents were left sitting in chairs for up to eight hours at a time, with little stimulation other than a TV on the wall.