Article (Scientific journals)
The upside of cumulative conceptual interference on exemplar-level mnemonic discrimination.
Delhaye, Emma; D'Innocenzo, Giorgia; Raposo, Ana et al.
2024In Memory and Cognition
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Keywords :
Conceptual similarity; Long-term visual memory; Semantic interference; Visual similarity; Neuropsychology and Physiological Psychology; Experimental and Cognitive Psychology; Arts and Humanities (miscellaneous)
Abstract :
[en] Although long-term visual memory (LTVM) has a remarkable capacity, the fidelity of its episodic representations can be influenced by at least two intertwined interference mechanisms during the encoding of objects belonging to the same category: the capacity to hold similar episodic traces (e.g., different birds) and the conceptual similarity of the encoded traces (e.g., a sparrow shares more features with a robin than with a penguin). The precision of episodic traces can be tested by having participants discriminate lures (unseen objects) from targets (seen objects) representing different exemplars of the same concept (e.g., two visually similar penguins), which generates interference at retrieval that can be solved if efficient pattern separation happened during encoding. The present study examines the impact of within-category encoding interference on the fidelity of mnemonic object representations, by manipulating an index of cumulative conceptual interference that represents the concurrent impact of capacity and similarity. The precision of mnemonic discrimination was further assessed by measuring the impact of visual similarity between targets and lures in a recognition task. Our results show a significant decrement in the correct identification of targets for increasing interference. Correct rejections of lures were also negatively impacted by cumulative interference as well as by the visual similarity with the target. Most interestingly though, mnemonic discrimination for targets presented with a visually similar lure was more difficult when objects were encoded under lower, not higher, interference. These findings counter a simply additive impact of interference on the fidelity of object representations providing a finer-grained, multi-factorial, understanding of interference in LTVM.
Disciplines :
Neurosciences & behavior
Author, co-author :
Delhaye, Emma  ;  Université de Liège - ULiège > GIGA > GIGA CRC In vivo Imaging - Aging & Memory ; CICPSI, Faculdade de Psicologia, Universidade de Lisboa, Lisboa, Portugal
D'Innocenzo, Giorgia;  CICPSI, Faculdade de Psicologia, Universidade de Lisboa, Lisboa, Portugal
Raposo, Ana;  CICPSI, Faculdade de Psicologia, Universidade de Lisboa, Lisboa, Portugal
Coco, Moreno I;  Department of Psychology, Sapienza University of Rome, Rome, Italy. moreno.cocoi@gmail.com ; IRCSS Santa Lucia, Roma, Italy. moreno.cocoi@gmail.com
Language :
English
Title :
The upside of cumulative conceptual interference on exemplar-level mnemonic discrimination.
Publication date :
06 May 2024
Journal title :
Memory and Cognition
ISSN :
0090-502X
eISSN :
1532-5946
Publisher :
Springer, United States
Peer reviewed :
Peer Reviewed verified by ORBi
Funding text :
This research was supported by Portuguese national funding from FCT \u2013 Funda\u00E7\u00E3o para a Ci\u00EAncia e a Tecnologia, I.P, and co-financed by the Program Lisboa 2020, Portugal 2020 and the EU through the European Regional Development Fund (ERDF), under grant (PTDC/PSI-ESP/30958/2017; LISBOA-01-0145-FEDER-030958) awarded to MIC. This work was also funded by CICPSI (UIDB/04527/2020; UIDP/04527/2020).
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