Ranesh Viswanadha

Ranesh Viswanadha (Telugu: రణేష్ విశ్వనాధ) is an Indian-American animator, writer and director, who has been diagnosed with hyperthymesia. He was the second person to receive such a diagnosis, and it was his case that inspired research into hyperthymesia.

Abilities
Viswanadha is able to recite details of every day of his life from the time when he was thirteen years old. He can recall various obscure moments of his life in great detail. His condition, termed hyperthymesia, or "hyperthymestic syndrome", is characterized by a highly superior autobiographical memory.