What does earlier N2 latency after training indicate?

Earlier N2 latency after training indicates improved efficiency of inhibitory cortical networks. The N2 is an event-related potential that reflects the brain's response during cognitive tasks, particularly associated with processes such as error detection, inhibition, and cognitive control. A reduction in N2 latency suggests that the brain can process relevant stimuli and inhibit irrelevant responses more quickly.

This improvement suggests that training has enhanced the efficiency of the brain's inhibitory mechanisms, allowing for a more rapid and effective response to cognitive demands. Inhibitory networks are crucial for various cognitive functions, including attention and executive functions, which can be particularly beneficial in rehabilitation settings, such as for individuals recovering from a stroke. Faster N2 latency can indicate better cognitive control and improved capability to suppress unwanted thoughts or responses, promoting better overall cognitive function and adaptability in task performance.