Final answer:
The case study of Henry Molaison (H.M.) is well known in discussions of the multi-store model of memory, as it provided key insights into the function of memory and the role of the hippocampus in forming new explicit memories.
Step-by-step explanation:
The case study that has become especially well known in relation to the multi-store model of memory is that of Henry Gustav Molaison, often referred to as H.M. His story is particularly notable within the study of human memory and the understanding of how different brain structures are involved in the processing and storage of memories. After undergoing a surgical procedure to remove his hippocampus and amygdala to treat severe seizures, H.M. exhibited a significant inability to form new explicit memories. The insights gained from H.M.'s case greatly contributed to the conceptualization of the memory model proposed by Atkinson and Shiffrin, which suggests that memories pass through sensory memory, short-term memory, and finally long-term memory stages before storage.