P625 Central 625 Sat 25 Oct 02:45:23 STRANGE BUT TRUE? 20.30 Tonight, Aspel and his team of experts try to explain our nightly activities during our dreams. Scientists have now djvjlopjd a dream- machine which they claim will provide us with vivid dreams. Dr Keith Hearnj believes this process could be beneficial in understanding sleep, but lecturer Duncan Barford and therapist Michael Edwards are both adamant that we shouldn't be tinkering around with our dreams. NICAM Stereo 888 Subtitles