Time-lapse dissection videos: traditional practice in a new, digital format

This research introduces an innovative series of time-lapse dissection videos that enable accelerated observation of the dissection process. Cadaveric dissection has consistently been described in the literature as a reliable method for enhancing student understanding and visualisation, however as a process it is expensive and extremely time-consuming, hence it is often inaccessible to learners. When active dissection is unavailable, prosections can be used to teach anatomy, however a considerable amount of spatial and structural information is lost during the dissection process. These time-lapse videos demonstrate dissection quickly and accurately and allow an irreversible process to be rewound and rewatched with flexibility. Results suggest that time-lapse offers a comprehensive and engaging view of the dissection process that students appreciate being able to observe within a concise timeframe. Written annotation, audio narration and colourful highlighting were essential inclusions following student feedback. These videos can provide instruction before dissection classes or can expose the dissection process to learners without access to cadaveric specimens. However, certain invaluable elements of practical dissection are rooted within constructivism and cannot be replicated by video. Time-lapse dissection videos should therefore be used to supplement and not replace active dissection.

本研究推出了一套创新的延时解剖视频系列，可实现解剖过程的加速观测。现有文献普遍认为，尸体解剖（cadaveric dissection）是提升学生理解程度与空间视觉认知的可靠教学手段，但该流程成本高昂且耗时极久，因此学习者往往难以获取该实践机会。当无法开展主动解剖实践时，可借助预制解剖标本（prosections）开展解剖学教学，但在此过程中会丢失大量空间结构信息。本系列延时解剖视频可快速且精准地展示完整解剖流程，并能将这一不可逆的解剖过程灵活倒放、反复观看。研究结果表明，延时视频能够以全面且引人入胜的方式呈现解剖流程，学生可在较短时间内完成观察，深受其认可。结合学生反馈，手写注释、音频旁白与彩色高亮标注均为该视频的必要组成部分。此类视频可用于解剖课程课前预习，也能为无法获取尸体解剖标本的学习者展示完整的解剖流程。但实操解剖中部分无可替代的核心要素根植于建构主义学习理念，无法通过视频进行复刻。因此，延时解剖视频仅可作为主动解剖实践的补充手段，而非替代方案。