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. Author manuscript; available in PMC: 2022 May 26.
Published in final edited form as: Neuron. 2021 Feb 8;109(6):1055–1066.e4. doi: 10.1016/j.neuron.2021.01.016

Figure 5. Evidence for interhemispheric transfer of working memory traces in prefrontal LFP power.

Figure 5.

(A and B) Mean time-frequency LFP power for trials where the remembered location shifted from the ipsilateral to contralateral (A) or from the contralateral to ipsilateral (B) hemifield. Contours indicate significant difference from pre-sample baseline. Gray regions at right of all panels indicate time points with possible temporal smearing of test-period effects.

(C) Swap inversion effect. F-statistic map for sample hemifield × swap condition interaction, signed to indicate if power was greater when remembered location ends up in contralateral (green) or ipsilateral (brown) hemifield. Contours indicate significant interaction.

(D–F) Summary of LFP power for ipsilateral-to-contralateral (green) and contralateral-to-ipsilateral (orange) trials, pooled within frequency bands labeled in (A): gamma (D), beta (E), and theta (F). Around the time of the saccade, LFP power in all bands showed strong effects of the swap condition (saccade versus no saccade). Later in the post-saccade delay, signatures in all bands inverted, as predicted by the shifting trace model.

See also Figure S2.