Article Figures & Data
Figures
- Figure 1.
Sequence of trial events. Participants were asked to silently rehearse two digits, then six colors or objects were displayed for 0.2, 1, or 2 seconds (s). After 0.8 s, a cue appeared for 0.5 s indicating which item would be tested. The participant then responded to the 2AFC test with the arrow keys and finally recalled the remembered digits with the number keys.
- Figure 2.
Mean working memory capacity by item type, encoding time, and verbal load. Error bars indicate bootstrapped 95% confidence intervals to illustrate the data independent of modeling decisions such as priors. A, Experiment 1a. A near-direct replication attempt of the critical behavioral findings from Brady et al. (2016). B, Experiment 1b. An additional verbal load manipulation was included in experiment 1b to determine whether additional suppression of verbal strategies impacted results. C, Experiment 1c. A replication of experiment 1a with intermixed trials to further disrupt potential encoding strategies. D, Individual data combined over all three experiments.
- Figure 3.
CDA amplitude by set size and item type. Error bars indicate bootstrapped 95% confidence intervals. A, Raw CDA waveforms. CDA was generated by averaging over trials for each participant and calculating a contralateral minus ipsilateral difference wave using the PO3, PO4, PO7, and PO8 electrodes. Highlighted regions show the areas used to calculate mean CDA amplitudes. B, Experiment 2 behavior results. Working memory capacity was calculated using the set size for that condition. C, Mean CDA amplitude for the memory display (400–1000 ms). Means were generated for each participant before bootstrapping. D, Mean CDA amplitude for the delay (1300–1700 ms). Means were calculated using the same time window as Brady et al. (2016).
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