Background:

Saccade-induced retrieval enhancement (SIRE) refers to the phenomenon that actively engaging in horizontal eye movements before recall enhances subsequent memory performance. This effect is thought to be the result of interhemispheric interactions stimulated by saccades. An alternative explanation is that saccades promote memory retrieval by improving top-down attention control. Thus, the mechanisms of SIRE are unclear, and the present meta-analysis quantitatively analyzed the effect of saccades on memory performance and examined the mechanisms of SIRE.

Methods:

We searched “Web of Science”, “PubMed”, and “Springer” for peer reviewed papers using the keywords “eye movements + memory” and “saccades + memory”. Twenty-two papers were included in the final analysis.

Results:

There was a significant facilitation of horizontal saccades on overall memory performance, with a pooled effect size (Cohen’s d) of 0.45 (p < 0.001). However, the overall effect of vertical saccades was not significant (d = 0.1, p = 0.14). Moderation analysis showed that the handedness of participants was a significant moderator of SIRE, with strongly right-handed individuals benefiting more from horizontal saccades than non-strongly right-handed individuals (p < 0.01).

Conclusion:

Horizontal saccades improved memory performance, particularly for strongly right-handed individuals. These results support the interhemispheric interaction hypothesis.

中文翻译：

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EXPRESS：水平扫视而非垂直扫视增强记忆检索：荟萃分析和系统评价

背景：

扫视诱导检索增强（SIRE）是指在回忆之前主动进行水平眼球运动可增强后续记忆表现的现象。这种效应被认为是眼跳刺激半球间相互作用的结果。另一种解释是，眼跳通过改善自上而下的注意力控制来促进记忆检索。因此，SIRE的机制尚不清楚，目前的荟萃分析定量分析了眼跳对记忆表现的影响，并研究了SIRE的机制。

方法：

我们使用关键词“眼动+记忆”和“眼跳+记忆”在“Web of Science”、“PubMed”和“Springer”中搜索同行评审论文。最终分析纳入22篇论文。

结果：

水平扫视对整体记忆表现有显着促进作用，合并效应大小（Cohen's d）为 0.45（p < 0.001）。然而，垂直扫视的总体影响并不显着（d = 0.1，p = 0.14）。调节分析表明，参与者的利手习惯是 SIRE 的重要调节因素，惯用右手的人比非惯用右手的人从水平扫视中受益更多（p < 0.01）。

结论：

水平扫视可以提高记忆能力，特别是对于惯用右手的人来说。这些结果支持半球间相互作用假说。