Prefrontal cortical activity during uneven terrain walking in younger and older adults oleh Jungyun Hwang, Chang Liu, Chang Liu, Steven P. Winesett, Steven P. Winesett, Sudeshna A. Chatterjee, Anthony D. Gruber, Clayton W. Swanson, Clayton W. Swanson, Todd M. Manini, Chris J. Hass, Rachael D. Seidler, Rachael D. Seidler, Rachael D. Seidler, Daniel P. Ferris, Daniel P. Ferris, Arkaprava Roy, David J. Clark, David J. Clark