SDAM stands for Severely Deficient Autobiographical Memory and is often characterized by a lifelong inability to vividly recollect or re-experience past personal events.
Mental imagery has been described as having a fundamental role in episodic memories, and some early research shows SDAM overlapping with visual aphantasia. Current estimates are that 51% of people with SDAM also have aphantasia, but this overlap is still being investigated.
Dr. Brian Levine is a senior scientist at the Rotman Research Institute at Baycrest Health Sciences, professor in the Departments of Psychology and Medicine (Neurology), University of Toronto, and a clinical neuropsychologist. He is best known in the aphantasia community for his pioneering work around SDAM, or Severely Deficient Autobiographical Memory.
Levine joins the Aphantasia Network for a live Ask Me Anything (AMA) event to answer some of the community's questions. Hosted by Tom Ebeyer.
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Palombo, D. J., Alain, C., Söderlund, H., Khuu, W., & Levine, B. (2015). Severely deficient autobiographical memory (SDAM) in healthy adults: A new mnemonic syndrome. Neuropsychologia, 72, 105–118. doi:10.1016/j.neuropsychologia.2015.04.012
