White Rose University Consortium logo
University of Leeds logo University of Sheffield logo York University logo

The Role of Consolidation in Conceptual Memory

Ashton, Jennifer Elizabeth (2017) The Role of Consolidation in Conceptual Memory. PhD thesis, University of York.

This is the latest version of this item.

[img]
Preview
Text
JA_THESIS_REVISED_FINAL.pdf - Examined Thesis (PDF)
Available under License Creative Commons Attribution-Noncommercial-No Derivative Works 2.0 UK: England & Wales.

Download (3568Kb) | Preview

Abstract

Concepts allow us to bring meaning to the world; they require the integration of information from across multiple episodes and events, and the abstraction of statistical patterns and regularities from both new and existing knowledge. Processes during consolidation have been shown to benefit the extraction of gist, the detection of hidden rules and the integration of memory elements into coherent representations. Consolidation may therefore play an important role in the development of conceptual memory. To explore this, we used a range of consolidation delay manipulations and two paradigms that assessed the development of concept-based representations. In Chapter 2 and 3 we used an abstract cross-modal information-integration categorisation task, which allowed us to investigate the integration of information from across modalities (visual and auditory) and the extraction of an underlying category structure. In these experiments we did not find any immediate consolidation benefits on categorisation performance. However, post-consolidation improvements in category learning were observed, if participants had a sleep-filled delay; suggesting that processes during sleep may enhance the effectiveness of future concept-based learning. In Chapters 4 and 5, we used an associative memory task that allowed us to dissociate the impact of consolidation on generalised concept-based representations from trained item knowledge. In this task we found sleep-associated improvements in memory; however, these were specific to trained-item knowledge, with no sleep-associated benefits in measures of memory generalisation. An investigation into intrinsic brain connectivity in Chapter 5 suggests that general variations in functional connectivity can in part explain individual differences in long-term memory performance; with decoupling between heteromodal and sensory-motor brain regions supporting memory generalisation and the formation of concepts. Our results provide new insights into the role of consolidation in the development of conceptual memory and highlight important directions for future research.

Item Type: Thesis (PhD)
Related URLs:
Academic Units: The University of York > Psychology (York)
Identification Number/EthosID: uk.bl.ethos.739927
Depositing User: Miss Jennifer Elizabeth Ashton
Date Deposited: 09 Apr 2018 11:34
Last Modified: 24 Jul 2018 15:24
URI: http://etheses.whiterose.ac.uk/id/eprint/19883

Available Versions of this Item

  • The Role of Consolidation in Conceptual Memory. (deposited 09 Apr 2018 11:34) [Currently Displayed]

You do not need to contact us to get a copy of this thesis. Please use the 'Download' link(s) above to get a copy.
You can contact us about this thesis. If you need to make a general enquiry, please see the Contact us page.

Actions (repository staff only: login required)