The ethics committee approved his study, which was to involve 10 healthy volunteers.

In one survey, 39 percent of healthy volunteers said they had heard their own thoughts aloud.

But in the healthy volunteers, the appetite was also associated with higher education.

Watch a video on the importance of healthy volunteers in clinical studies.

We studied 17 healthy volunteers without any history of bowel disease.

The study involved 20 healthy adult volunteers, who all averaged around 7.4 hours sleep a night.

This will be followed by a second, larger safety study in healthy human volunteers.

First, the drug is given to a small number of healthy volunteers to test its safety and establish the proper dose.

For comparison, a group of healthy volunteers used the same devices.

Normally, a small group of 20-100 healthy volunteers will be recruited.