Action cancellation – the ability to rapidly cancel an initiated movement in response to unexpected events – has been extensively studied in the upper limb using the stop signal task (SST). During gait, action cancellation is critical to stop and modify steps to avoid unexpected hazards and prevent falls. By adapting the SST to step initiation, this study investigated how the anticipatory postural adjustment (APA) and foot-lif...

Purpose This study aimed to investigate bilateral motor control and connectivity between supplementary motor area (SMA) and primary motor cortex (M1) in younger, middle-aged, and older healthy adults. Methods 32 younger (mean age 22.8 ± 5.3 years), 18 middle-aged (47.6 ± 6.5 years), and 23 older (75.8 ± 6.7 years) adults were tested. Bilateral motor control was assessed using the Purdue pegboard. Dual-site transcranial magneti...