This study examines three works by Argentine authors of the late 20th and early 21st centuries: Jorge Luis Borges's "La memoria de Shakespeare," Ricardo Piglia's La ciudad ausente, and Rodrigo Fresán's Mantra. These works explore the theme of memory directly, and provide insight into the role of memory in relation to literature, technology, and media. To understand memory and its functions and failures, I employ concepts from recent scientific inquiry into the nature of memory, particularly neuroscience and clinical psychology. Within this framework, I show how memory and narrative fiction share a number of similarities, and explore the idea of memoria ajena, or memories that come not from personal experience, but from outside, whether it be from another person's mind or from the fiction one consumes.