Priming Techniques Increase Embodiment During Mirror Visual Feedback

Motor learning and the adaptation of sensorimotor circuits are fundamental to maintaining autonomy in patients with neurological impairments [1]. For those recovering from stroke, mirror visual feedback (a technique where a patient watches the reflection of their unaffected limb to stimulate the brain's motor regions) is frequently employed to correct interhemispheric imbalances by activating the mirror neuron system [2]. However, clinical success often depends on the patient's ability to achieve a state of embodiment, which is the subjective experience of perceiving a virtual or mirrored limb as part of their own body [3, 4]. While technology-based interventions like virtual reality and biofeedback continue to evolve, tailoring these strategies to individual multisensory integration needs remains a significant challenge in rehabilitation medicine [5, 6]. A new study of 20 healthy participants [7] demonstrates that priming neural networks through the rubber hand illusion (a sensory paradigm that induces the sensation that a prosthetic hand belongs to the subject) significantly enhances embodiment perception during mirror visual feedback. Furthermore, the findings indicate that objective-based tasks (goal-oriented movements involving specific targets) facilitate embodiment elicitation more effectively than simple motor tasks [7].