The virtual cocoon is a proposed, in development virtual reality

Virtual reality

Virtual reality , also known as virtuality, is a term that applies to computer-simulated environments that can simulate physical presence in places in the real world, as well as in imaginary worlds...

 helmet that will allegedly stimulate all five of the human senses when it is finished.

The helmet will include a high-definition television

High-definition television

High-definition television is video that has resolution substantially higher than that of traditional television systems . HDTV has one or two million pixels per frame, roughly five times that of SD...

screen, speakers, a wireless computer, a tube that releases chemicals for smell, another tube that releases chemicals for taste, a fan, and a heater.

The helmet is being developed by researchers at five British universities.