aspg-25-4369-1791493348 20261008210228 American Scientific Publishing Group admin@americaspg.com American Scientific Publishing Group Journal of Cognitive Human-Computer Interaction JCHCI 2771-1471 2771-1463 2026 11 1 A. Nithya Assistant Professor, Department of Computer Science and Engineering, St. Joseph’s College of Engineering, India B. Chitra Assistant Professor, Department of Artificial Intelligence and Data Science, Panimalar Engineering College, India V. Sathya Preiya Associate Professor, Department of Computer Science and Engineering, S.A. Engineering College, Chennai, India When people are immersed in a visually demanding task, the attentional resources required to monitor the environment for cues that should trigger a remembered intention are frequently captured by the primary task, causing prospective memory failures that range from the inconvenient to the safety-critical. This problem is pervasive in modern work environments in which digital interfaces compete continuously for visual attention, yet the overwhelming majority of reminder and notification systems rely on the same visual channel that is already congested. This paper reports a controlled user study examining whether carefully designed haptic and spatial audio cues can compensate for this visual saturation and restore prospective memory performance without substantially increasing cognitive burden. Thirty-two participants completed a counterbalanced within-subjects protocol in which they performed primary cognitive tasks—document editing on a virtual desktop and navigating in a driving simulation—while managing a set of time-critical intentions delivered through four reminder conditions: visual-only, haptic-only, spatial audio only, and the combined haptic-plus-audio channel. The study measures prospective memory hit rate, task-switching errors, cue response latency, and multidimensional subjective workload across both scenarios and all four conditions. Results consistently favour the combined modality, which produces substantially fewer memory failures and lower reported workload than any single channel, while individual differences in baseline workload predict the magnitude of benefit from non-visual cueing. These findings carry direct implications for the design of ambient notification systems in high-demand professional and safety-critical environments. 2026 20 28 4369 https://creativecommons.org/licenses/by/4.0/ 10.54216/JCHCI.110104 https://www.americaspg.com/journal/25/article/4369 https://www.americaspg.com/storage/articles/manuscripts/01M21DFNDRT52YRTCTMP9K9622.pdf