The urethral sponge is an area in which the G-spot (Gräfenberg Spot) may be found. Although the G-spot may exist, it has been doubted by some researchers. A team at The King's College of London, in a big study on the G-spot's existence in recent years, and having 1,800 women, found no proof that the G-spot exists. The authors of the study had stated that the "G-spot" may be a figment (thought) of people's imagination, which has been encouraged by magazines, sex therapists and suggestive therapeutics. However, some other studies, using ultrasound, have found physiological evidence of the G-spot in women who report having orgasms during intercourse.