Pitch Gestures Increase Prefrontal Activation During Mandarin Tone Sandhi Perception

Adult second language acquisition represents a significant challenge to neuroplasticity, requiring the integration of complex sensory inputs and executive control networks [1]. Traditional pedagogical models are increasingly being supplemented by multimodal approaches that utilize visual, auditory, and kinesthetic elements to enhance cognitive outcomes [2]. These multisensory strategies appear to leverage the brain's inherent architecture as a prediction machine, where top-down expectations are matched against incoming sensory data to minimize processing errors [3]. Furthermore, the efficiency of these learning processes is heavily dependent on executive functions, such as working memory and cognitive flexibility, which serve as strong predictors of performance [4]. While the benefits of multimodal instruction are observed clinically, the specific neural mechanisms by which physical movement facilitates the internal representation of abstract phonological rules remain a subject of active investigation.