Frequency characteristics of evoked and oscillatory electroencephalic activity in a human memory scanning task

摘要: Abstract Research on memory scanning tasks indicates that oscillatory activity increases with load during retention, whereas evoked power (EP, comprising the P3) decreases retrieval. We investigate question, whether both phenomena are primarily related to theta oscillations. However, we found retention alpha oscillations increased and exactly this frequency exhibits phase locking – measured by a specially developed index (PLI) The decreased P3 amplitude was delta EP PLI. coincides last of three peaks. Thus, may be important for timing evaluation read out process most likely is manifested P3.