Synaesthetic Images

The synaesthetic images are when the different senses are combined. It is when the visual, tactile, auditory, etc. senses are merged to form one image.  It was repeatedly used by John Keats to portray the unity of the world, to show that everything is linked together in some way and to create a sensual effect.

"Isabella; or, The Pot of Gold" And TASTE the MUSIC of that VISION pale. (stanza XLIX)

In this line, the three sensory images that are combined are sight, (vision pale), sound (music) and taste (taste). Therefore the synaesthtic image created is composed of a visual image, a sound image and a taste image.