Which of the following are true of Professor Michael Pollan's experience of using psychedelic drugs, as discussed in his keynote speech played in class titled, 'Psychedelics and How to Change Your Mind'?

Select all answers that apply. Marks will be deducted for incorrect responses.

a.While under the influence, Professor Pollan experienced what felt like observing himself being blasted into little post it notes

b.While under the influence, Professor Pollan saw dragonflies that appeared as big as birds and felt that the leaves in the garden were observing him

c.While under the influence, Professor Pollan felt as if barriers between himself and the natural world and other people were reduced

d.While under the influence, Professor Pollan saw images from his dreams, specifically a dog sleeping beside a horse, which he interpreted to symbolise unity

e.While under the influence, Professor Pollan claims to have been able to see music