A likely case of progression from mild cognitive impairment to dementia in Yasunari Kawabata's The Sound of the Mountain.

Ageing has always been a prominent theme for many authors, who wrote about the physical and cognitive changes that accompany it. Japanese literature, in particular, is rich in examples, especially from the pen of Yasunari Kawabata. In The Sound of the Mountain, Kawabata narrates the old age of Shingo Ogata, who begins the book manifesting only lapses in episodic memory, in a manner compatible with what we would call mild cognitive impairment.