the rubber hand illusion demonstrates how tactile sensations can be attributed to an artificial limb when it is visually perceived, revealing a complex interaction between vision, touch, and proprioception. in an experiment, participants viewed a rubber hand while their real hand was hidden. when the rubber and real hands were brushed in sync, participants reported feeling the touch on the rubber hand, suggesting that the brain integrated visual and tactile information to identify the rubber hand as part of their body. this illusion is thought to involve a constraint-satisfaction process where the brain reconciles conflicting sensory inputs based on normal correlations between vision, touch, and proprioception. a second experiment tested this by measuring how participants' movements changed after experiencing the illusion. participants reached for their left hand while their eyes were closed, and those who experienced the illusion reached toward the rubber hand, indicating a distortion in proprioceptive information. a control group with asynchronous brushing showed less illusion and no reach displacement. this illusion is part of a class of perceptual effects involving intersensory bias. similar effects have been observed in phantom limb patients who feel touch on their amputated limb when viewing their intact arm in a mirror. research also shows that cells in the monkey premotor cortex respond to both tactile stimulation and visual perception of objects approaching a body region. the rubber hand illusion suggests that intermodal correlations are crucial for identifying the body as self. the study highlights the role of intermodal matching in self-attribution.the rubber hand illusion demonstrates how tactile sensations can be attributed to an artificial limb when it is visually perceived, revealing a complex interaction between vision, touch, and proprioception. in an experiment, participants viewed a rubber hand while their real hand was hidden. when the rubber and real hands were brushed in sync, participants reported feeling the touch on the rubber hand, suggesting that the brain integrated visual and tactile information to identify the rubber hand as part of their body. this illusion is thought to involve a constraint-satisfaction process where the brain reconciles conflicting sensory inputs based on normal correlations between vision, touch, and proprioception. a second experiment tested this by measuring how participants' movements changed after experiencing the illusion. participants reached for their left hand while their eyes were closed, and those who experienced the illusion reached toward the rubber hand, indicating a distortion in proprioceptive information. a control group with asynchronous brushing showed less illusion and no reach displacement. this illusion is part of a class of perceptual effects involving intersensory bias. similar effects have been observed in phantom limb patients who feel touch on their amputated limb when viewing their intact arm in a mirror. research also shows that cells in the monkey premotor cortex respond to both tactile stimulation and visual perception of objects approaching a body region. the rubber hand illusion suggests that intermodal correlations are crucial for identifying the body as self. the study highlights the role of intermodal matching in self-attribution.