The Synapse to Self: The Neuroscience of Self-Identity
It has long been believed that “you are what you remember.” Autobiographical memories are central to how we construct self-identity and experience a sense of self-continuity. They figure prominently in every aspect of our lives: earliest childhood recollections, developmental milestones and achievements, personal loss and public tragedy, and the breakdown of these memories across the life span. Conversely, self-identity plays a key role in how memories are selectively encoded, retrieved, or forgotten. Although these complex relations are far from being understood, neuropsychology and neuroscience research are illuminating the neural regions and networks underlying autobiographical memories and self-related processing. In this course, we will examine neuropsychological research—looking at how the loss of autobiographical memory impacts the integrity of identity such as in cases of amnesia and Alzheimer’s disease. We will also discuss how different memory systems support self-continuity and the capacity to “mentally time travel” back to the past and into the imagined future. We will examine how shifts in self-identity alter the accessibility of our memories and, in turn, our social and emotional functioning. Emphasis will also be placed on autobiographical memory and self-identity disturbances associated with mental illness and the way in which neuropsychologists and neuroscientists study these changes following therapeutic interventions.