Cargando…

Recognition memory of neutral words can be impaired by task-irrelevant emotional encoding contexts: behavioral and electrophysiological evidence

Previous studies on the effects of emotional context on memory for centrally presented neutral items have obtained inconsistent results. And in most of those studies subjects were asked to either make a connection between the item and the context at study or retrieve both the item and the context. W...

Descripción completa

Detalles Bibliográficos
Autores principales: Zhang, Qin, Liu, Xuan, An, Wei, Yang, Yang, Wang, Yinan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4327741/
https://www.ncbi.nlm.nih.gov/pubmed/25762916
http://dx.doi.org/10.3389/fnhum.2015.00073
_version_ 1782357147452964864
author Zhang, Qin
Liu, Xuan
An, Wei
Yang, Yang
Wang, Yinan
author_facet Zhang, Qin
Liu, Xuan
An, Wei
Yang, Yang
Wang, Yinan
author_sort Zhang, Qin
collection PubMed
description Previous studies on the effects of emotional context on memory for centrally presented neutral items have obtained inconsistent results. And in most of those studies subjects were asked to either make a connection between the item and the context at study or retrieve both the item and the context. When no response for the contexts is required, how emotional contexts influence memory for neutral items is still unclear. Thus, the present study attempted to investigate the influences of four types of emotional picture contexts on recognition memory of neutral words using both behavioral and event-related potential (ERP) measurements. During study, words were superimposed centrally onto emotional contexts, and subjects were asked to just remember the words. During test, both studied and new words were presented without the emotional contexts and subjects had to make “old/new” judgments for those words. The results revealed that, compared with the neutral context, the negative contexts and positive high-arousing context impaired recognition of words. ERP results at encoding demonstrated that, compared with items presented in the neutral context, items in the positive and negative high-arousing contexts elicited more positive ERPs, which probably reflects an automatic process of attention capturing of high-arousing context as well as a conscious and effortful process of overcoming the interference of high-arousing context. During retrieval, significant FN400 old/new effects occurred in conditions of the negative low-arousing, positive, and neutral contexts but not in the negative high-arousing condition. Significant LPC old/new effects occurred in all conditions of context. However, the LPC old/new effect in the negative high-arousing condition was smaller than that in the positive high-arousing and low-arousing conditions. These results suggest that emotional context might influence both the familiarity and recollection processes.
format Online
Article
Text
id pubmed-4327741
institution National Center for Biotechnology Information
language English
publishDate 2015
publisher Frontiers Media S.A.
record_format MEDLINE/PubMed
spelling pubmed-43277412015-03-11 Recognition memory of neutral words can be impaired by task-irrelevant emotional encoding contexts: behavioral and electrophysiological evidence Zhang, Qin Liu, Xuan An, Wei Yang, Yang Wang, Yinan Front Hum Neurosci Neuroscience Previous studies on the effects of emotional context on memory for centrally presented neutral items have obtained inconsistent results. And in most of those studies subjects were asked to either make a connection between the item and the context at study or retrieve both the item and the context. When no response for the contexts is required, how emotional contexts influence memory for neutral items is still unclear. Thus, the present study attempted to investigate the influences of four types of emotional picture contexts on recognition memory of neutral words using both behavioral and event-related potential (ERP) measurements. During study, words were superimposed centrally onto emotional contexts, and subjects were asked to just remember the words. During test, both studied and new words were presented without the emotional contexts and subjects had to make “old/new” judgments for those words. The results revealed that, compared with the neutral context, the negative contexts and positive high-arousing context impaired recognition of words. ERP results at encoding demonstrated that, compared with items presented in the neutral context, items in the positive and negative high-arousing contexts elicited more positive ERPs, which probably reflects an automatic process of attention capturing of high-arousing context as well as a conscious and effortful process of overcoming the interference of high-arousing context. During retrieval, significant FN400 old/new effects occurred in conditions of the negative low-arousing, positive, and neutral contexts but not in the negative high-arousing condition. Significant LPC old/new effects occurred in all conditions of context. However, the LPC old/new effect in the negative high-arousing condition was smaller than that in the positive high-arousing and low-arousing conditions. These results suggest that emotional context might influence both the familiarity and recollection processes. Frontiers Media S.A. 2015-02-13 /pmc/articles/PMC4327741/ /pubmed/25762916 http://dx.doi.org/10.3389/fnhum.2015.00073 Text en Copyright © 2015 Zhang, Liu, An, Yang and Wang. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Neuroscience
Zhang, Qin
Liu, Xuan
An, Wei
Yang, Yang
Wang, Yinan
Recognition memory of neutral words can be impaired by task-irrelevant emotional encoding contexts: behavioral and electrophysiological evidence
title Recognition memory of neutral words can be impaired by task-irrelevant emotional encoding contexts: behavioral and electrophysiological evidence
title_full Recognition memory of neutral words can be impaired by task-irrelevant emotional encoding contexts: behavioral and electrophysiological evidence
title_fullStr Recognition memory of neutral words can be impaired by task-irrelevant emotional encoding contexts: behavioral and electrophysiological evidence
title_full_unstemmed Recognition memory of neutral words can be impaired by task-irrelevant emotional encoding contexts: behavioral and electrophysiological evidence
title_short Recognition memory of neutral words can be impaired by task-irrelevant emotional encoding contexts: behavioral and electrophysiological evidence
title_sort recognition memory of neutral words can be impaired by task-irrelevant emotional encoding contexts: behavioral and electrophysiological evidence
topic Neuroscience
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4327741/
https://www.ncbi.nlm.nih.gov/pubmed/25762916
http://dx.doi.org/10.3389/fnhum.2015.00073
work_keys_str_mv AT zhangqin recognitionmemoryofneutralwordscanbeimpairedbytaskirrelevantemotionalencodingcontextsbehavioralandelectrophysiologicalevidence
AT liuxuan recognitionmemoryofneutralwordscanbeimpairedbytaskirrelevantemotionalencodingcontextsbehavioralandelectrophysiologicalevidence
AT anwei recognitionmemoryofneutralwordscanbeimpairedbytaskirrelevantemotionalencodingcontextsbehavioralandelectrophysiologicalevidence
AT yangyang recognitionmemoryofneutralwordscanbeimpairedbytaskirrelevantemotionalencodingcontextsbehavioralandelectrophysiologicalevidence
AT wangyinan recognitionmemoryofneutralwordscanbeimpairedbytaskirrelevantemotionalencodingcontextsbehavioralandelectrophysiologicalevidence