Rebecca J. St George

Cortical contributions to attentional orienting and response cancellation in action stopping

This study uses fNIRS to examine cortical activity during action cancellation in a stop-signal task, finding preSMA involvement consistent with the Pause-then-Cancel model.

The Stop Signal Stepping Task: how action cancellation commands disrupt step initiation in young and healthy older adults

This study adapts the stop signal task to stepping to examine how action cancellation affects movement in young and older adults, finding age-related differences in response speed but not stopping speed.

Large-scale Visuomotor Reaction Time Self-Testing Reveals Subtle Motor Changes in Older Adults with Subjective Cognitive Impairment

This study finds that older adults with subjective cognitive impairment show longer and more variable visuomotor reaction times, suggesting early motor deficits not captured by traditional cognitive tests.

Stopping Speed in Response to Auditory and Visual Stop Signals Depends on Go Signal Modality

This study investigates how the modality of go signals affects stopping speed in response to stop signals, finding faster stopping in cross-modal conditions and fastest stopping with audiovisual stop signals.