As far as psychologically stimulating, the plot is fairly easy to follow, the ambiguity of real versus imagined phenomena is fairly well balanced and is appreciable, the conflict between the fraternal twin sisters is understandable (one held up while the other seeking to leave her sister's shadow) and not so misplaced the movie grinds against itself. The usage of metaphysics is fairly benign (awareness, revelation, emergence, creation, and death) carries a fairly Jungian ethos, but falls short with no effective resolution (the apparent death and triumph of a character), that plays well with the theme of the movie, but comes across as either predictable (predestined) or unnecessarily amorphous. I'd prefer to think the death of her fear and past failure as her life world and external (family, sister, others) expectations being necessary for the new success as transformative, but this is more projection than film content (as the last scene is literally dying on a sculpture unnoticed by others (the complete opposite of transformative and in line with the character). Overall, it's a pleasant change from the typical shock and awe psychological film and remains internally consistent with it's main premise (trials and tribulations of an adolescent artist confronted with conflict, uncertainty, and mediocrity over industriousness) when comparing and contrasting an extrovert (outwardly able character) over an introvert (wish fulfillment and desires) with anxieties. Medical correlation: excessive propanal through stacking doses (triple dosing) would account for irritability, dizziness, and hallucinations, and wouldn't be the best for an individual who relies on a clear sensorium, cognition, and memory, hand coordination and fine motor skills.