Figure 4.

Effects of increased syllable load during encoding: oscillatory power contrast between second and first set of syllables on four-syllable trials. Figure layout follows Figure 2. Time 0 marks third/first syllable onset; fourth/second syllable onset occurs at ∼520 ms. Low frequency (θ, α, and β) power was attenuated from the first to third syllable and the second to fourth syllable bilaterally over auditory and premotor areas. HγP increased over premotor and prefrontal areas from the second to the fourth syllable. For details, see Results and Table 3.