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A single system account of enhanced recognition memory in synaesthesia

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Version 2 2023-06-12, 09:15
Version 1 2023-06-09, 19:47
journal contribution
posted on 2023-06-12, 09:15 authored by Nicolas Rothen, Christopher J Berry, Anil SethAnil Seth, Sabine Oligschläger, Jamie WardJamie Ward
Researchers often adjudicate between models of memory according to the models’ ability to explain impaired patterns of performance (e.g. in amnesia). In contrast, evidence from special groups with enhanced memory is very rarely considered. Here, we explored how people with unusual perceptual experiences (synaesthesia) perform on various measures of memory and test how computational models of memory may account for their enhanced performance. We contrasted direct and indirect measures of memory (i.e. recognition memory, repetition priming, and fluency) in grapheme-colour synaesthetes and controls using a Continuous Identification with Recognition (CID-R) paradigm. Synaesthetes outperformed controls on recognition memory and showed a different reaction time pattern for identification. The data were most parsimoniously accounted for by a single-system computational model of the relationship between recognition and identification. Overall, the findings speak in favour of enhanced processing as an explanation for the memory advantage in synaesthesia. In general, our results show how synaesthesia can be used as an effective tool to study how individual differences in perception affect cognitive functions.

History

Publication status

  • Published

File Version

  • Published version

Journal

Memory and Cognition

ISSN

0090-502X

Publisher

Psychonomic Society

Page range

1-12

Department affiliated with

  • Informatics Publications

Research groups affiliated with

  • Sackler Centre for Consciousness Science Publications

Full text available

  • No

Peer reviewed?

  • Yes

Legacy Posted Date

2019-12-02

First Open Access (FOA) Date

2020-02-24

First Compliant Deposit (FCD) Date

2019-11-28

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