I lie on my right side, wired up to the machine,gel smeared on my chest. I can see the screenas the probe slides. I recognise the heart chamberspulsing in segments like those of a pregnancy scan,but make no sense of the multi-coloured lightningflickering in a thundercloud, nor of a line of skyscrapersand a procession of sailing barges reflected in calm sea,all accompanied by glooping sounds like a radiatorfilling with air bubbles from a central heating pump.
