Send to

Choose Destination
Neuropsychiatr Dis Treat. 2018 Nov 22;14:3185-3192. doi: 10.2147/NDT.S186081. eCollection 2018.

The subjective perception of past, present, and future time in patients with Alzheimer's disease: a qualitative study.

Author information

Division of Neurology, Department of Internal Medicine, Showa University School of Medicine, Tokyo 142-8666, Japan,
Department of Physiology, Kyorin University School of Medicine, Tokyo 181-0004, Japan.
Neurology, Okusawa Hospital and Clinics, Tokyo 158-0083, Japan.



The relationship between dementia and time perception impairment is unknown.


This study aims to explore subjective perception of the passage of time in patients with Alzheimer's disease (AD).


We conducted semi-structured interviews with 11 AD patients. Grounded theory, a qualitative research methodology, was used for data analysis.


Based on interview transcripts, five categories were designated: {Live according to a private clock}, {The past comes up}, {Move back and forth between the present and the past}, {Cannot imagine the future}, and {Bid farewell to this world as early as tomorrow}.


Our results suggest that AD patients alternate past and present without complete awareness and cannot imagine a future other than one ending in death.


dementia; grounded theory; interview; mind time; neuropsychology; qualitative study

Conflict of interest statement

Disclosure The authors report no conflicts of interest in this work.

Supplemental Content

Full text links

Icon for Dove Medical Press Icon for PubMed Central
Loading ...
Support Center