Effects of pre-encoding stress on brain correlates associated with the long-term memory for emotional scenes.

Recent animal and human research indicates that stress around the time of encoding enhances long-term memory for emotionally arousing events but neural evidence remains unclear. In the present study we used the ERP old/new effect to investigate brain dynamics underlying the long-term effects of acut...

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Autores principales:	Janine Wirkner, Mathias Weymar, Andreas Löw, Alfons O Hamm
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2013
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/0d41f1606e0c4325a3750ae5566d6781
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spelling	oai:doaj.org-article:0d41f1606e0c4325a3750ae5566d67812021-11-18T08:56:49ZEffects of pre-encoding stress on brain correlates associated with the long-term memory for emotional scenes.1932-620310.1371/journal.pone.0068212https://doaj.org/article/0d41f1606e0c4325a3750ae5566d67812013-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/24039697/?tool=EBIhttps://doaj.org/toc/1932-6203Recent animal and human research indicates that stress around the time of encoding enhances long-term memory for emotionally arousing events but neural evidence remains unclear. In the present study we used the ERP old/new effect to investigate brain dynamics underlying the long-term effects of acute pre-encoding stress on memory for emotional and neutral scenes. Participants were exposed either to the Socially Evaluated Cold Pressure Test (SECPT) or a warm water control procedure before viewing 30 unpleasant, 30 neutral and 30 pleasant pictures. Two weeks after encoding, recognition memory was tested using 90 old and 90 new pictures. Emotional pictures were better recognized than neutral pictures in both groups and related to an enhanced centro-parietal ERP old/new difference (400-800 ms) during recognition, which suggests better recollection. Most interestingly, pre-encoding stress exposure specifically increased the ERP old/new-effect for emotional (unpleasant) pictures, but not for neutral pictures. These enhanced ERP/old new differences for emotional (unpleasant) scenes were particularly pronounced for those participants who reported high levels of stress during the SECPT. The results suggest that acute pre-encoding stress specifically strengthens brain signals of emotional memories, substantiating a facilitating role of stress on memory for emotional scenes.Janine WirknerMathias WeymarAndreas LöwAlfons O HammPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 8, Iss 9, p e68212 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Janine Wirkner Mathias Weymar Andreas Löw Alfons O Hamm Effects of pre-encoding stress on brain correlates associated with the long-term memory for emotional scenes.
description	Recent animal and human research indicates that stress around the time of encoding enhances long-term memory for emotionally arousing events but neural evidence remains unclear. In the present study we used the ERP old/new effect to investigate brain dynamics underlying the long-term effects of acute pre-encoding stress on memory for emotional and neutral scenes. Participants were exposed either to the Socially Evaluated Cold Pressure Test (SECPT) or a warm water control procedure before viewing 30 unpleasant, 30 neutral and 30 pleasant pictures. Two weeks after encoding, recognition memory was tested using 90 old and 90 new pictures. Emotional pictures were better recognized than neutral pictures in both groups and related to an enhanced centro-parietal ERP old/new difference (400-800 ms) during recognition, which suggests better recollection. Most interestingly, pre-encoding stress exposure specifically increased the ERP old/new-effect for emotional (unpleasant) pictures, but not for neutral pictures. These enhanced ERP/old new differences for emotional (unpleasant) scenes were particularly pronounced for those participants who reported high levels of stress during the SECPT. The results suggest that acute pre-encoding stress specifically strengthens brain signals of emotional memories, substantiating a facilitating role of stress on memory for emotional scenes.
format	article
author	Janine Wirkner Mathias Weymar Andreas Löw Alfons O Hamm
author_facet	Janine Wirkner Mathias Weymar Andreas Löw Alfons O Hamm
author_sort	Janine Wirkner
title	Effects of pre-encoding stress on brain correlates associated with the long-term memory for emotional scenes.
title_short	Effects of pre-encoding stress on brain correlates associated with the long-term memory for emotional scenes.
title_full	Effects of pre-encoding stress on brain correlates associated with the long-term memory for emotional scenes.
title_fullStr	Effects of pre-encoding stress on brain correlates associated with the long-term memory for emotional scenes.
title_full_unstemmed	Effects of pre-encoding stress on brain correlates associated with the long-term memory for emotional scenes.
title_sort	effects of pre-encoding stress on brain correlates associated with the long-term memory for emotional scenes.
publisher	Public Library of Science (PLoS)
publishDate	2013
url	https://doaj.org/article/0d41f1606e0c4325a3750ae5566d6781
work_keys_str_mv	AT janinewirkner effectsofpreencodingstressonbraincorrelatesassociatedwiththelongtermmemoryforemotionalscenes AT mathiasweymar effectsofpreencodingstressonbraincorrelatesassociatedwiththelongtermmemoryforemotionalscenes AT andreaslow effectsofpreencodingstressonbraincorrelatesassociatedwiththelongtermmemoryforemotionalscenes AT alfonsohamm effectsofpreencodingstressonbraincorrelatesassociatedwiththelongtermmemoryforemotionalscenes
_version_	1718421124410245120

Effects of pre-encoding stress on brain correlates associated with the long-term memory for emotional scenes.

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