Bibliography (5):

1. Lives without imagery—Congenital aphantasia

2. Severely deficient autobiographical memory (SDAM) in healthy adults: A new mnemonic syndrome

3. Behavioral and neuroanatomical investigation of Highly Superior Autobiographical Memory (HSAM).

4. Wikipedia Bibliography:

   1. https://en.wikipedia.org/wiki/Hyperphantasia  :

      https://en.wikipedia.org/wiki/Hyperphantasia

   2. Aphantasia