The TMR-SD effect did not differ for objects with low versus high pre-nap spatial error, ruling out memory strength as the explanation¶

Claim · All claims
Evidence · 1 study · causal r1 · q3
Currency · newest study 2024 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q3 i? A median split on pre-nap spatial error showed no significant difference in the TMR-SD effect between low- and high-error objects. → Nathan W. Whitmore 2024

Evidence¶

Nathan W. Whitmore 2024¶

Nathan W. Whitmore, Erika M. Yamazaki & Ken A. Paller. (2024). Targeted memory reactivation with sleep disruption does not weaken week-old memories. npj Science of Learning 9, 64. https://doi.org/10.1038/s41539-024-00276-0

q3 · i? · causal · r1

Wilcoxon rank-sum test on the TMR-SD effect for low versus high pre-nap error objects per participant. The authors report that low-error trials in the present study were significantly more accurate than overall pre-nap error in the prior 1-hour-delay study, so weaker memories cannot explain the null effect.

"there was no signi ficant difference in the TMR-SD effect as a function of low versus high pre-nap error [ V =6 5 , p = 0.611], indicating a similar lack of memory decline."

Discussion¶

Related Claims¶

• Spatial recall error increased from initial test to the one-week pre-nap test, but recall remained above chance after the delay — related
• TMR-SD auditory cues presented during sleep did not reliably weaken week-old spatial memories compared to uncued objects — related
• Greater sleep disruption in the present study rules out reduced sleep disruption as an explanation for the absent memory weakening — related
• Sleep-stage durations, sleep fragmentation, and pre- and post-cue EEG band power were not significantly correlated with forgetting of cued items or the TMR-SD effect — related
• The TMR-SD memory effect differed by post-learning delay: memory weakening occurred with a 1-hour delay but not with a 1-week delay — related
• TMR efficacy depends on memory strength and task difficulty: benefits concentrate on moderately strong and challenging items, with limited advantage for easy (L1) items — reports the opposite