ABSTRACT

Wearable camera photo review has successfully been used to enhance memory, yet very little is known about the underlying mechanisms. Here, the sequential presentation of wearable camera photos – a key feature of wearable camera photo review – is examined using behavioural and EEG measures. Twelve female participants were taken on a walking tour, stopping at a series of predefined targets, while wearing a camera that captured photographs automatically. A sequence of four photos leading to these targets was selected (∼ 200 trials) and together with control photos, these were used in a recognition task one week later. Participants’ recognition performance improved with the sequence of photos (measured in hit rates, correct rejections, & sensitivity), revealing for the first time, a positive effect of sequence of photos in wearable camera photo review. This has important implications for understanding the sequential and cumulative effects of cues on episodic remembering. An old-new ERP effect was also observed over visual regions for hits vs. correct rejections, highlighting the importance of visual processing not only for perception but also for the location of activated memory representations.

摘要

可穿戴相机照片审查已成功用于增强记忆力，但对其潜在机制知之甚少。在这里，可穿戴相机照片的顺序呈现——可穿戴相机照片审查的一个关键特征——使用行为和 EEG 措施进行检查。12 名女性参与者被带去徒步旅行，在一系列预定义的目标处停留，同时佩戴自动拍摄照片的相机。选择了一系列通向这些目标的四张照片（约 200 次试验），并将这些照片与对照照片一起用于一周后的识别任务。参与者的识别性能随着照片序列（以命中率、正确拒绝和敏感度衡量）而提高，首次揭示，照片序列在可穿戴相机照片审查中的积极作用。这对于理解线索对情景记忆的连续和累积影响具有重要意义。在命中与正确拒绝的视觉区域上还观察到了一种新旧的 ERP 效应，突出了视觉处理不仅对于感知而且对于激活记忆表征的位置的重要性。