Early P3a amplitude

Older age is associated with early P3a amplitude in humans.

“a significantly smaller e-P3a amplitude in Middle-aged and Old groups, indicating a deficit in the orienting response to irrelevant novel and deviant auditory stimuli.”

HumansNovel minus Standard and Deviant minus Standard difference waveformsbrain

Involuntary Capture and Voluntary Reorienting of Attention Decline in Middle-Aged and Old Participants

Frontiers in human neuroscience·Mar 29, 2016