The unitary sense of self that exists across time is central to the human experience (Gallagher, 2000; Heatherton, Macrae, & Kelley, 2004). In this sense, the fundamental question on how humans understand and represent knowledge about themselves and others is attracting interest in social and cognitive neuroscience (Berkman, Livingston, & Kahn, 2017; Humphreys & Sui, 2016; Northoff, 2017). The concept of self-continuity is often defined as perceived associations of one's current self with past and future selves (Löckenhoff & Rutt, 2017). Northoff (2016a, 2017) has denoted this concept as a diachronic component linked to the awareness of the continuity of a person across time (i.e., "I am I" despite physical
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