concurrent word generation and motor performance further evidence for language-motor interaction并发词生成和电动机性能language-motor交互的进一步证据.pdfVIP

Concurrent Word Generation and Motor Performance: Further Evidence for Language-Motor Interaction 1,2 3 2,4 1 Amy D. Rodriguez *, Matthew L. McCabe , Joe R. Nocera , Jamie Reilly 1 Department of Speech, Language, and Hearing Sciences, University of Florida, Gainesville, Florida, United States of America, 2 Brain Rehabilitation Research Center, Malcom Randall VA Medical Center (VAMC), Gainesville, Florida, United States of America, 3 Schwob School of Music, Columbus State University, Columbus, Georgia, United States of America, 4 Department of Aging Geriatric Research, University of Florida, Gainesville, Florida, United States of America Abstract Embodied/modality-specific theories of semantic memory propose that sensorimotor representations play an important role in perception and action. A large body of evidence supports the notion that concepts involving human motor action (i.e., semantic-motor representations) are processed in both language and motor regions of the brain. However, most studies have focused on perceptual tasks, leaving unanswered questions about language-motor interaction during production tasks. Thus, we investigated the effects of shared semantic-motor representations on concurrent language and motor production tasks in healthy young adults, manipulating the semantic task (motor-related vs. nonmotor-related words) and the motor task (i.e., standing still and finger-tapping). In Experiment 1 (n = 20), we demonstrated that motor- related word generation was sufficient to affect postural control. In Experiment 2 (n = 40), we demonstrated that motor- related word generation was sufficient to facilitate word generation and finger tapping. We