Event-related evoked potentials (ERPs), which include cognitive potentials, despite their importance in neuroscience and medicine are still a largely unknown phenomenon.

Two possible mechanisms for ERPs are under evaluation:

1)      phase resetting of existing oscillation in the brain,

2)      the imposition of stimulus-locked activity on random oscillation.

Gruber and colleagues (Alpha phase synchronization predicts P1 and N1 latency and amplitude size. Cerebral Cortex 15, 371-377, 2005) used several methods of analysis and found that the ERP components P1 and N1 are probably produced by phase resetting and synchronization between frequencies.


BM&L-July 2005