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Dynamics of brain activity reveal a unitary recognition signal.

Christoph Weidemann, Michael J. Kahana

Journal of Experimental Psychology: Learning, Memory, and Cognition, Volume: 45, Issue: 3, Pages: 440 - 451

Swansea University Author: Christoph Weidemann

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DOI (Published version): 10.1037/xlm0000593

Abstract

Dual-process models of recognition memory typically assume that independent familiarity and recollec-tion signals with distinct temporal profiles can each lead to recognition (enabling 2 routes to recognition),whereas single-process models posit a unitary “memory strength” signal. Using multivariate...

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Published in: Journal of Experimental Psychology: Learning, Memory, and Cognition
ISSN: 0278-7393 1939-1285
Published: American Psychological Association (APA) 2019
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URI: https://cronfa.swan.ac.uk/Record/cronfa40770
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first_indexed 2018-06-19T19:30:56Z
last_indexed 2020-12-10T03:54:55Z
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spelling 2020-12-09T10:28:57.1262102 v2 40770 2018-06-19 Dynamics of brain activity reveal a unitary recognition signal. b155eeefe08155214e70fea25649223c Christoph Weidemann Christoph Weidemann true false 2018-06-19 FGMHL Dual-process models of recognition memory typically assume that independent familiarity and recollec-tion signals with distinct temporal profiles can each lead to recognition (enabling 2 routes to recognition),whereas single-process models posit a unitary “memory strength” signal. Using multivariate classifierstrained on spectral electroencephalogram (EEG) features, we quantified neural evidence for recognitiondecisions as a function of time. Classifiers trained on a small portion of the decision period performedsimilarly to those also incorporating information from previous time points indicating that neural activityreflects an integrated evidence signal. We propose a single-route account of recognition memory that iscompatible with contributions from familiarity and recollection signals, but relies on a unitary evidencesignal that integrates all available evidence. Journal Article Journal of Experimental Psychology: Learning, Memory, and Cognition 45 3 440 451 American Psychological Association (APA) 0278-7393 1939-1285 1 3 2019 2019-03-01 10.1037/xlm0000593 COLLEGE NANME Medicine, Health and Life Science - Faculty COLLEGE CODE FGMHL Swansea University 2020-12-09T10:28:57.1262102 2018-06-19T15:21:01.2006273 Faculty of Medicine, Health and Life Sciences School of Psychology Christoph Weidemann 1 Michael J. Kahana 2 0040770-19062018152147.pdf WeidemannKahana2018.pdf 2018-06-19T15:21:47.6900000 Output 2152087 application/pdf Accepted Manuscript true 2018-06-19T00:00:00.0000000 true eng
title Dynamics of brain activity reveal a unitary recognition signal.
spellingShingle Dynamics of brain activity reveal a unitary recognition signal.
Christoph Weidemann
title_short Dynamics of brain activity reveal a unitary recognition signal.
title_full Dynamics of brain activity reveal a unitary recognition signal.
title_fullStr Dynamics of brain activity reveal a unitary recognition signal.
title_full_unstemmed Dynamics of brain activity reveal a unitary recognition signal.
title_sort Dynamics of brain activity reveal a unitary recognition signal.
author_id_str_mv b155eeefe08155214e70fea25649223c
author_id_fullname_str_mv b155eeefe08155214e70fea25649223c_***_Christoph Weidemann
author Christoph Weidemann
author2 Christoph Weidemann
Michael J. Kahana
format Journal article
container_title Journal of Experimental Psychology: Learning, Memory, and Cognition
container_volume 45
container_issue 3
container_start_page 440
publishDate 2019
institution Swansea University
issn 0278-7393
1939-1285
doi_str_mv 10.1037/xlm0000593
publisher American Psychological Association (APA)
college_str Faculty of Medicine, Health and Life Sciences
hierarchytype
hierarchy_top_id facultyofmedicinehealthandlifesciences
hierarchy_top_title Faculty of Medicine, Health and Life Sciences
hierarchy_parent_id facultyofmedicinehealthandlifesciences
hierarchy_parent_title Faculty of Medicine, Health and Life Sciences
department_str School of Psychology{{{_:::_}}}Faculty of Medicine, Health and Life Sciences{{{_:::_}}}School of Psychology
document_store_str 1
active_str 0
description Dual-process models of recognition memory typically assume that independent familiarity and recollec-tion signals with distinct temporal profiles can each lead to recognition (enabling 2 routes to recognition),whereas single-process models posit a unitary “memory strength” signal. Using multivariate classifierstrained on spectral electroencephalogram (EEG) features, we quantified neural evidence for recognitiondecisions as a function of time. Classifiers trained on a small portion of the decision period performedsimilarly to those also incorporating information from previous time points indicating that neural activityreflects an integrated evidence signal. We propose a single-route account of recognition memory that iscompatible with contributions from familiarity and recollection signals, but relies on a unitary evidencesignal that integrates all available evidence.
published_date 2019-03-01T03:51:54Z
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score 11.037581

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