While practicing visualizing walking across a bridge, Rob experienced a sensation of "hearing sounds" that spread from the legs and arms to the head, later localizing behind the ears.

The main experiment recruits approximately 100 participants, who complete, in randomized crossover order, soundless bridge visualization, ordinary scene imagery, actual sound, and explicit bodily sensation suggestion conditions, with four visits per person at intervals of at least 48 hours. Moment-by-moment body maps record sensation onset, spread, and post-auricular localization, while electromyography, respiration, EEG, and actual acoustic vibration are monitored; blinded assessment of repeatability is conducted over approximately 3 months. Supplementary Question 5 additionally recruits approximately 60 skilled trance practitioners and 60 matched controls for crossover comparison of audio recordings, real-time manual notes, and ordinary states; the identity of the original note-taker is clarified in advance, the speaking task is fixed, and the note-taker's interruptions and the speaker's hand movements are treated as independent factors. Words per minute, duration, semantic quality, and artifact-cleaned EEG are compared, and the absorption level is measured with an independent experience scale.

Cross-Modal Somatic Experiences During Guided Imagery: A Pre-registered Phenomenological and EEG Study

Mere replication of sound-like bodily sensations would not overturn mainstream assumptions, because multisensory integration, imagery, and suggestion mechanisms already permit such experiences.

Tony Ro，纽约市立大学研究生中心：[研究者主页](https://www.gc.cuny.edu/people/tony-ro); Lua Koenig：听触映射研究; Kleber Monteiro Pinto、José Garcia Vivas Miranda，巴伊亚联邦大学 Laboratory of Biosystems 相关研究团队

The spread from limbs to head with final post-auricular localization is a relatively specific phenomenon description, but the original text does not promise that other people or the same person will necessarily reproduce it; therefore it remains primarily a case report.

Theta/alpha power alone cannot serve as a "trance depth meter," as eye closure, drowsiness, speech EMG, and hand activity can all affect it; the recording-modality substudy could be titled "Recording Modality, Absorption, and Verbal Output During Altered Attention States: A Controlled Crossover Study."