double sensation

noun2

1. •
   A concept, primarily from Edmund Husserl, describing the experience of touching oneself (e.g., one hand touching the other), where one hand is both the toucher (subject) and the touched (object) simultaneously, revealing the body's unique capacity to be both sensing and sensed.
2. •
   The involuntary blending or combination of two senses, where one sensory input triggers an automatic, simultaneous experience in another sense, like seeing colors when hearing music (chromesthesia) or tasting words (lexical-gustatory); a form of sensory cross-wiring, where a stimulus normally processed by one pathway is also routed through another, creating a unified or intensified sensory event.