abstract
background
bizarre
body
circle
circular
concept
confusion
design
disorient
dizzy
epicenter
esp
extra
eyestrain
headache
hypnosis
hypnotherapy
hypnotist
illusion
illustration
mental
migraine
mind
of
optical
out
pattern
perception
pinwheel
psychedelic
psychic
round
sensory
spin
spiral
square
stress
tornado
unconscious
unstable
whirlpool