Journal
HIPPOCAMPUS
Volume 22, Issue 6, Pages 1215-1219Publisher
WILEY
DOI: 10.1002/hipo.20981
Keywords
hippocampus; episodic memory; future imagining; delay discounting; patient K; C
Categories
Funding
- Canadian Institutes of Health Research [MOP 93535]
- NIH [MH055308]
- Centre for Programs at Washington University, St. Louis
- Sloan Research Fellowship
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Deficits in episodic memory are associated with deficits in the ability to imagine future experiences (i.e., mental time travel). We show that K.C., a person with episodic amnesia and an inability to imagine future experiences, nonetheless systematically discounts the value of future rewards, and his discounting is within the range of controls in terms of both rate and consistency. Because K.C. is neither able to imagine personal uses for the rewards nor provide a rationale for selecting larger future rewards over smaller current rewards, this study demonstrates a dissociation between imagining and making decisions involving the future. Thus, although those capable of mental time travel may use it in making decisions about future rewards, these results demonstrate that it is not required for such decisions. (c) 2011 Wiley Periodicals, Inc.
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