Fig. 6

Word clouds placebo condition. Visualization of the topic-defining key words for the top-four topics from the placebo group analysis. Top-Left: ‘Energetic experiences and physiological sensations’; Top-Right: ‘Profound positive affect and uplifted interpersonal-contextual emotional states’; Bottom-Left: ‘Placebo effect; Bottom-Right: ‘Temporal dynamics and dose-dependent effects study medication’. In each word cloud, the size of the word corresponds to the relative importance of a given word for a given topic, as determined by the c-TD-IDF score. The color of a given word does not carry a deeper meaning.