Low Detail Retention in Visual Memory Despite Focused Effort

Humans can recognize a vast number of previously seen images, yet their ability to recall fine details from visual memory remains limited. This study investigated whether prolonged study of a small number of stimuli could improve the recognition accuracy for memorizing details of the scene. We developed a novel experimental paradigm that allowed repeated testing of memory for individual images, allowing us to query images repeatedly and measure which parts of the scene were remembered, and which were forgotten. Our results revealed that participants struggled to achieve high accuracy in detail-oriented memory tasks, even with extensive effort and focus. Follow-up experiments explored potential factors contributing to this limitation, shedding light on why memorizing fine details is inherently difficult. These findings underscore the challenges of achieving high-detail visual memory in long-term memory for complex scenes - Although we can memorize a large numbers of scenes with low fidelity, we cannot memorize details even in a small numbers of scenes.