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Neural Activity When People Solve Verbal Problems with Insight

Figure 6

The Time Course of the Insight Effect

Alpha power (9.8 Hz at right parietal-occipital electrode PO8) and gamma power (39 Hz at right temporal electrode T8) for the insight effect (i.e., correct insight solutions minus correct noninsight solutions, in v2). The left y-axis shows the magnitude of the alpha insight effect (purple line); the right y-axis applies to the gamma insight effect (green line). The x-axis represents time (in seconds). The yellow arrow and R (at 0.0 s) signify the time of the button-press response. Note the transient enhancement of alpha on insight trials (relative to noninsight trials) prior to the gamma burst.

Figure 6