Pupil dilation tracks the dynamics of mnemonic interference resolution
Johansson, Roger LU
; Pärnamets, Philip
LU
; Bjernestedt, Amanda
LU
and Johansson, Mikael
LU
(2018)
In Scientific Reports
8.
- Abstract
- Mnemonic interference refers to the inability to retrieve a goal-relevant memory due to interference from goal-irrelevant memories. Understanding the causes of such interference and how it is overcome has been a central goal in the science of memory for more than a century. Here, we shed new light on this fundamental issue by tracking participants’ pupil response when they encode and retrieve memories in the face of competing goal-irrelevant memories. We show that pupil dilation systematically increased in accordance with interference from competing memory traces when participants retrieved previously learned information. Moreover, our results dissociate two main components in the pupillary response signal: an early component, which peaked... (More)
- Mnemonic interference refers to the inability to retrieve a goal-relevant memory due to interference from goal-irrelevant memories. Understanding the causes of such interference and how it is overcome has been a central goal in the science of memory for more than a century. Here, we shed new light on this fundamental issue by tracking participants’ pupil response when they encode and retrieve memories in the face of competing goal-irrelevant memories. We show that pupil dilation systematically increased in accordance with interference from competing memory traces when participants retrieved previously learned information. Moreover, our results dissociate two main components in the pupillary response signal: an early component, which peaked in a time window where the pupillary waveform on average had its maximum peak, and a late component, which peaked towards the end of the retrieval task. We provide evidence that the early component is specifically modulated by the cognitive effort needed to handle interference from competing memory traces whereas the late component reflects general task engagement. This is the first demonstration that mnemonic interference resolution can be tracked online in the pupil signal and offers novel insight into the underlying dynamics. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/9c77c093-ebbb-4018-a46c-cb49bad60568
- author
- Johansson, Roger
LU
; Pärnamets, Philip
LU
; Bjernestedt, Amanda
LU
and Johansson, Mikael
LU
- organization
- publishing date
- 2018-03-19
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Scientific Reports
- volume
- 8
- article number
- 4826
- publisher
- Nature Publishing Group
- external identifiers
-
- pmid:29556091
- scopus:85044229334
- ISSN
- 2045-2322
- DOI
- 10.1038/s41598-018-23297-3
- project
- Thinking in Time: Cognition, Communication and Learning
- Culture, brain, learning: a Wallenberg Network Initiative
- language
- English
- LU publication?
- yes
- id
- 9c77c093-ebbb-4018-a46c-cb49bad60568
- date added to LUP
- 2018-03-08 22:37:14
- date last changed
- 2024-01-14 16:31:49
@article{9c77c093-ebbb-4018-a46c-cb49bad60568,
abstract = {{Mnemonic interference refers to the inability to retrieve a goal-relevant memory due to interference from goal-irrelevant memories. Understanding the causes of such interference and how it is overcome has been a central goal in the science of memory for more than a century. Here, we shed new light on this fundamental issue by tracking participants’ pupil response when they encode and retrieve memories in the face of competing goal-irrelevant memories. We show that pupil dilation systematically increased in accordance with interference from competing memory traces when participants retrieved previously learned information. Moreover, our results dissociate two main components in the pupillary response signal: an early component, which peaked in a time window where the pupillary waveform on average had its maximum peak, and a late component, which peaked towards the end of the retrieval task. We provide evidence that the early component is specifically modulated by the cognitive effort needed to handle interference from competing memory traces whereas the late component reflects general task engagement. This is the first demonstration that mnemonic interference resolution can be tracked online in the pupil signal and offers novel insight into the underlying dynamics.}},
author = {{Johansson, Roger and Pärnamets, Philip and Bjernestedt, Amanda and Johansson, Mikael}},
issn = {{2045-2322}},
language = {{eng}},
month = {{03}},
publisher = {{Nature Publishing Group}},
series = {{Scientific Reports}},
title = {{Pupil dilation tracks the dynamics of mnemonic interference resolution}},
url = {{http://dx.doi.org/10.1038/s41598-018-23297-3}},
doi = {{10.1038/s41598-018-23297-3}},
volume = {{8}},
year = {{2018}},
}