The spatial patterns of the somatic sensations were visualized using statistical parametric mapping. After each session, the participants reported the intensity and location of the de qi sensations perceived on their arm using a bodily sensation mapping tool. However, in reality, they were observing premade pseudo-biosignal images (six sessions: one circular, two rectangular elongated, two diagonally elongated, and one cross-fixation shape). Participants were informed that they would receive acupuncture stimulations at different angles while they were presented with changes in their peripheral blood flow (PBF) measured with Laser Doppler perfusion imaging. Methods: Twenty-four participants received tactile stimulations with a von Frey filament on the left arm. We investigated whether manipulating information related to the physiological response could change the somatosensory experience of acupuncture. Objective: Humans interpret sensory inputs based on actual stimuli and expectations of the stimuli. 2Department of Anatomy and Acupoint, College of Korean Medicine, Gachon University, Seongnam, South Korea.1Acupuncture and Meridian Science Research Center, College of Korean Medicine, Kyung Hee University, Seoul, South Korea.Hyun-Seo Song 1, Won-Mo Jung 1, Ye-Seul Lee 1,2, Seung-Woo Yoo 1 and Younbyoung Chae 1*
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