Final answer:
The person who experiences tasting colors and seeing music after using LSD is experiencing synesthesia.
Step-by-step explanation:
The person who experiences the sensation of tasting colors and seeing music after using LSD is experiencing synesthesia.
Synesthesia is a neurological phenomenon where a person's senses become crossed or blended, resulting in experiencing one sense in response to another. In this case, the person is perceiving taste as a color and hearing as visual imagery.
While hallucinations are a possible effect of LSD, synesthesia specifically refers to the mixing of senses. Dissociation and delusions are not accurate descriptions for this particular experience.