Submission 517
The Role of Visual Imagery in Long-Term Memory of Natural Scenes: Perspectives on Memory Span, Fidelity and Precision
Posterwall-30
Presented by: Varg Thore Königsmark
Visual mental imagery refers to the ability to generate quasi-sensory representations in the absence of corresponding visual input. Although substantial inter-individual variability in imagery vividness has long been documented, the complete absence of visual imagery—known as aphantasia—has only recently received systematic attention. While aphantasia has been linked to modest impairments in tasks that tax visual imagery, such as visual working memory, these differences are often attenuated by the adoption of compensatory, non-visual strategies. However, it remains unclear whether such strategies can support performance in short and long-term visual memory tasks, where visual imagery may facilitate the retrieval of encoded perceptual details. In this study, we approach this question by comparing short and long-term memory performance for a complex visual scene in individuals with aphantasia and those with typical imagery. To enhance ecological validity, participants freely view a realistic room scene on the screen for two minutes and wereencouraged to use their preferred encoding strategies. Their memory is subsequently assessed using four measures: (1) object memory span, (2) memory fidelity through detailed object descriptions, (3) spatial precision via free-recall drawing, and (4) mnemonic precision through a scene reconstruction task requiring selection of target objects and rejection of lures. Preliminary results from these analyses will be presented and discussed.